1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa2812500ab357778f1c5320c4cb35578d1b3560eeb559462c3479a52df15db. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bb031149-1d16-4193-bad4-8fccb082a3e4.json and https://artists.proofprofile.net/proofs/artist/bb031149-1d16-4193-bad4-8fccb082a3e4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e7738dfff12537bab8dcee912d93289709e19e95e82ad5cbe98cc9d415ef0d. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZN882146219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e282e58378e72e491c2beef9613a27dff909d162cd97c24be48ea0c161f6a6c. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZN882146220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be3f11ea8084db1828489484576e652b4419cea0e332c6219eed2deb4a684c4. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZN882146221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38864b9fc9e5531f784b8306ffe6f05162cc7b46196eda345f28ab260fc082f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZN882146215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e7738dfff12537bab8dcee912d93289709e19e95e82ad5cbe98cc9d415ef0d. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZN882146219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e282e58378e72e491c2beef9613a27dff909d162cd97c24be48ea0c161f6a6c. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZN882146220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be3f11ea8084db1828489484576e652b4419cea0e332c6219eed2deb4a684c4. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZN882146221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31bcacbe6ea87a2d117c9bfe8f1af0ce15e4b555f0bfbf97f6a9431899f05ab. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZN882146223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d481f45cfbf024f891e9ed47802666a5e571ffbb7e16264d60dd011376cddd. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZN882146224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0313a07074eb4f7e24cbb67cf9e20a52eba62d97feacdad58d2ad09e1bdf43ae. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZN882146225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedee398863b105d1cb8360598433cfc88494414ca9e00f9604c82c1969fbf500. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZN882146226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4467e8953938eca6c586c7da109e67344263599847603614748e2a0816f37a35. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZN882146227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699249350d6a2eabcef422ef2d9082e9582a10d4ac1947f86c0afa4b619d750e. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZN882146228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd6fd0132ff858ee732f03d56f2d3e902ebe8053d607ca291da9f58fb74a23f9. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZN882146229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8e8a816ec73a05a07e2b1e6896df51f785061943248e010484f33f59a9fff2. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:46:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZN882146230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0a36559f6cc631e90701bbcdc8829276ee210793064f81d7410e8c7b083e9b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZN882146231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc890f7b8d53abfeb2a7f7f9e17afc8cd8c7557941151389d98a6a1549bd54441. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6N21982043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf3bd62a9fbbdc3cee12c6195607797eb58300e564219350bb77ee400870799. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6P41947862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4dbfb37a02557eb2e6fcb0aebd8aa1cf697e045967f868f7fbc96e9cb51efd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6P41947864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896dce95f516cc9603099d4f554c25ede7f3b4bdc408185d02d5129daa6e06dd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6P41947878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e37f9e1feed798b14d7c7557c3a357b74fbe2eaa56d2da730008f452037baf4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6P41947879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ed9c2e5c9d6d649d91ae7cc38a19fcdc7e64ced974b03d317719c4a476cf0c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6P41947881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf618f5efe6b3c19133d7119d4ec97bbdf6835cf7ec03d98a6bb737a8899f2da7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6P41947892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a643f303fbea1a06a368fea29adc10af3011d031d0f437ab6013c132d2d6fcb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6P41947813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf3bd62a9fbbdc3cee12c6195607797eb58300e564219350bb77ee400870799. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6P41947862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896dce95f516cc9603099d4f554c25ede7f3b4bdc408185d02d5129daa6e06dd. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T13:59:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6P41947878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e37f9e1feed798b14d7c7557c3a357b74fbe2eaa56d2da730008f452037baf4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6P41947879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ed9c2e5c9d6d649d91ae7cc38a19fcdc7e64ced974b03d317719c4a476cf0c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6P41947881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf618f5efe6b3c19133d7119d4ec97bbdf6835cf7ec03d98a6bb737a8899f2da7. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6P41947892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c70afa1e8f04655f6ad35496308cca3e28553efbad84f84dc1423bede7a98b8. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6N22054731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44363efc460a5eb9c32d398e3dacc2f100631687d1142beab07ae1af34450b7. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6P42064723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb3c6163b924bacdbce2a45480d09ccd785a6d1a220b4b05d113f1187fe7f44. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:56:03Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6P42093092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67effdbcac1a2a096720024d28dcbcac6b4839abefd93526deb7d92c44b5d2e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFME2069412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee4d37726d1b64ff7a562721d290ebed44747dc0c198cb747cb498e653399d8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFME2063993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb31e0c68f92ae4544f7108d86ab7548807b7a6b31ad18fad815da6b4a60960. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFME2069427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d91b6c8fb81f68d4db1dddc56516412b208dd0adfb9d1febbe075d1a1ce68ff. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFME2063947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2428d8ded04a5e251df9280bdd31933c643d16978fe35176387ea16076077afe. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFME2063956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b52b6bd1ac05d774537eb4ae9404ede1f29b2250c9ec5a279458cb1172b121. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFME2064005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8adc8660716f7500243df89a1d2ac58560edde45a24a6377c6ef1dcd9e03464b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFME2069400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55861ed36c2da2ea7644401eec334bbc68edcf80bb204b6913da481e38edd7e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFME2069417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dbca81cdc42324e7c8976b623f261b5b5691224750ac4278c5f7b2fa9c5648a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFME2063897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd635958ea729fad343bba6038e999bb14a00613d2f3d17212320d485759c9260. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFME2063946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067d6c23e05150d63d01155109840a99669eb6a3642eda73eb6c21a38eb4625a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFME2063863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a32ff27fa7f6b93213e1bf3187644322d646a4de64f9857b470e5b958eb0457. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFME2063937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7907409fab4f0dfefecc90fa674f67c1451b048b267ff98f19d90724445403c0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFME2063916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599da4683770b128d91751bbbbef4e9c0061e6baedaea96393d80328c044928a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFME2063919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8881cab9f64edc6ced6891441b0eb9201b42376bd2cba4475253e983414c9dd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFME2072286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1660b9546272acf90fd202aaaf0f7d1fe1e9602427adc9118df479e3c22ee50. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA72272135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8eaa3bf04e9bdacc0f1fc2518b632470011e180b8d4c13795de3effa7717b20. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA72454342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af02e70708cb9d7cb42a8a00439dea54e3011bb4d926f541f363715f644dc28. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ3N2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fcf618743fef557079ebd7693f55c0032f5319d10135a43399b1387396c5277. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJY2156211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1438d346c94b2bfad0e105d3d501ad3b91a8562f2f5950cc6dc1688302f4f08. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MXE672000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493ef63c741ba3885b8a6c740c2b769feef604a33a1c8a5e1c5be510cb7d438c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BK4DA2321247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62aa0025fdc45ef64434009d84b9b00198b7a926ba0e148f8b147628ee4aeb23. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFJ2138209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16cf8ca7b578d121038351a373205d791d85d42159331eb76cf85d45d72662a6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWL12302569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe9b4ba205e505b924ae6a18c3608f2ae58c8a3c1f824b03b3cbf036921eef7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF102100063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537070b489bb13787028a6bfc9246603d57dd19566508ed7166f8d726b232eaf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJX2162531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf747134e914e1219eec4a1a78616222c4fef8299a1c590180d029798898f0158. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COA6W2101724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1438d346c94b2bfad0e105d3d501ad3b91a8562f2f5950cc6dc1688302f4f08. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MXE672000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16cf8ca7b578d121038351a373205d791d85d42159331eb76cf85d45d72662a6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWL12302569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1224f3cce59e29a999cfcf2cf81dc7a84d66594709b19941411828cec69fdd3f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AREZZ2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf7de9d291fb68a3c3bccaed8fa697ff49c621552dca93be2028a59eb3fe170. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFME2193353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91136bf610a6eb715d788b7844dab33acca78251178ebfecf258daebe2a36861. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MXF152201388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2feb3d281026f439217cb0ff1618443d6962229f4cd6896b5dfdf7c6a9a9c6. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEO1914586.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch