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 0x0f9f27c55560c27f412972eb43476e945298c974723107ab19e690019439d6b6. 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/5979c1f2-a134-4ea2-bf19-b88ec3601ff6.json and https://artists.proofprofile.net/proofs/artist/5979c1f2-a134-4ea2-bf19-b88ec3601ff6.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 0x0ebcff43eca16b4f9db59c66912031baa2dbe6d621040b2b91a6e9bf24ea9b65. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/FRX762537446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80497c99b91daa6c5f8d3156ce6dbde7fc7b60900d9ddb817687a398d66cde52. 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/FRX762541161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97875543663e5bd502f10e9a2acc8d3cad7ecaad82eac08abecc6a81f7956f49. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FRX762556326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd070a082afbe015c1107702ae144e21d508c1f1a69fa4b8166f91d7694b00de2. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZTB22263286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f1c4381e8b8fb92282b13bf88556dcdd898dd08f9c66cf61a9465a3d394d10. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZNH52344417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c0244a06c1666196e166252b6ca64ca85e32a8e329f9c66e5bc32490d2efc3. 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/QZNH52344418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05507f36f20895c00412926ef5ea5d0bf5466cab1995d63bb38f8e4985ae2870. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZNH52344420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57c231ac407acd66e7c925fa7376a5371d462b1e6590e06aa65e763c065bbfe. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZNH52344422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6dd98621d42bb99091c05ef3434b77b50be34c43a178281633f2e548ae8224. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZNH52344424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8603d992e32da7d21a5b8f13f094879c8df26046219469eef1a6ecae6e54a619. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNH52344425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59aa44e921a6307f3344300d146a147c681d27c1fdbfbd3bf14b984b671ae7c. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZK6H2393574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbca844b3232eb2b1b708048a1a671fe3fc2adf243c3c3a33f8bc652114beef2. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZNWR2378818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735367e99c259dfe093444ea66de2900ee8cd203bbacd22fccdc773a72e4b825. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DGA072340086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f1c4381e8b8fb92282b13bf88556dcdd898dd08f9c66cf61a9465a3d394d10. 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/QZNH52344417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c0244a06c1666196e166252b6ca64ca85e32a8e329f9c66e5bc32490d2efc3. 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/QZNH52344418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6fb48230f0f5730055b860f776b85f3fcc73ac0ee61b042b42caef3f67df4d. 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/QZNH52344419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8603d992e32da7d21a5b8f13f094879c8df26046219469eef1a6ecae6e54a619. 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/QZNH52344425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59aa44e921a6307f3344300d146a147c681d27c1fdbfbd3bf14b984b671ae7c. 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/QZK6H2393574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5111c32b6ee563634cbac31e44695bf50217783cd6bace82123c8dc69a5e8a. 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/DGA0Q2374082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae429d2552b823a6691e9ca5779b953af54fd33426e950ff3ed24a4ce4f128b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZMEN2353546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40cbc75617ac2cdd9e0d6282c790e7b94beddf84ade7f1e581c0df4e03a8a2ee. 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/DGA0Q2374083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb732c12a38dbd784441f2abf166d232080c4405acd70f45bfc6606737a3aa8c0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DGA0Q2374086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbca844b3232eb2b1b708048a1a671fe3fc2adf243c3c3a33f8bc652114beef2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNWR2378818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e744ff9e7d46ed11fd37a7209f4d299ab526ca5fcfac0c103e442ec781a41e. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FRX282418215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4600cdc55717cf9009b3e239f5dd43d388271ebe3a3ba6384e3d54d6e6ac7b17. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DGA052578471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf481b50c633c20ff6ae783117678422eab34c56f3383319bd7c82eedb4687832. 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/PLI367831230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf481b50c633c20ff6ae783117678422eab34c56f3383319bd7c82eedb4687832. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PLI367831230.