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 0x203aafa1018227695de70cee6df1ed0d1a9ee28bc944c74aab935a1d1882e4fe. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/51393f18-2ece-42a2-966d-57b0720fc74e.json and https://artists.proofprofile.net/proofs/artist/51393f18-2ece-42a2-966d-57b0720fc74e.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 0xe22c52f7c1425f2770e732519f458ba90a89c590c323d68930a31736eec111b8. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZNWY2242402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0948565262f4d36b9e1d992b589d4dfe1af983ecee1b3557bb53bc5867c394e1. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:13:40Z), 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/QZTB22291550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03097ddbbb7ac1fcbbb5eff680722aab28e6b0da30e027ad7a46067652cb6fb5. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/QZFZ32305241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23362745ee0a001880d1bdae23e74306ef8ad9e313ac9117e0f89352d24287f6. 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/QZES52399521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f220c7453c9ec0eb86f416dbe9f1388963953b4c82e178d53ce5741d8bec498. 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/QZHN52325533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51b78787b90ced084051cd2ad526237a76c27447fb2f4cf2de85f6e276f5fd2. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/SE6XW2336656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7ae61626b46c70140684587dbd70297246ceefac11e9168e74c5417f278484. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SE6SA2309535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654c406dbd4bb8af393a38f8a10251e043064176549e4745ec1dc429bea6d5a1. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:34:58Z), 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/SE6XW2392441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4af23406a51cb12b9497391b32f1a15b3e98664ac8f3ab8b1bdb1129f11671d. 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/SE5BU2437462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eee78a5e6aab09907b359ed9c4227b3cf4a0e9bb6e97e04abe20db07f4e6a9a. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/SE6I32490432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2dc9d9bf9b47e0d752c58de40fcbcbbf2fa06efcc1c8bbe46fd5effd8a63e2. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:54:22Z), 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/SE5BU2419619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e884c2211f3dd4f340af03ad9fa3dd5c1791a89d6c6468613775b323fb100ab. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SE5752486849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9578b3880925d05d9efdb5a9fde92c1e3fc1cdfca5fb1e4c37286b70e6f3d2e. 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/SE5752498371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa2ad89454833bd44ca2baca441a419fd2a0d504928692d0cd21154753acd4a. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/SE6HN2465712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b0c4bf6c8f8047c45d6a39a77a36e4547fe998c0e645487d19b2e9d5559193. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/SE6HN2488697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1188ccd50bba4f09c5a41e569bee99b8cecfd881585b052ab2d763cadd5769d. 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/SE5752457447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2b31df18e8f1c4a111022a8c755b559cd2b09f0022b1f7910d367bc28bfe9b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SE6HN2492076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca81b8d849411d00f7b6f523d025f050c9bd28e4a5007fa52a505b0ab74b747. 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/SE6HN2492078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73949473d7f31e3cddbc9f695dcc0f2968411dc5203eaed638806e300fa7d6c. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/UKZGC2406654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf022a8ce2c9d20a90eccdddd8fde142975b4822a11bc804045cc9bf200275f. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/SE6I32412350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1d94252570d945da586a36a3602a1caf11f425b8c5c939ca8aa05406e7efd1. 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/SE6I32430829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb0f7cb76c96df10268635cc6ee4b434a503402d7505645dc6527073112f663. 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/SE6I32446158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894565641e212e8a463cb0a636dc28d319985ca71424d3b3b29d000407ced96f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/SE6QE2446833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff988e6254c0dedb515d6f52186edeaa881358a92c6fc7a694946a9944e63459. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/UKZGC2407161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7feed4b4d22d5f1438e5d6cfaaa0312405ee4a147495dea7ee34bdec05e101. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SE6QE2479412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd215a27b6bc6d6129cb59619c7ebfd2a7046b54e0ac3400e1722ad2d19876abe. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/UKZGC2409731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c329d7436c4250e05763952975d576cfb1572345f079ea29bd4c3336da258f9. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/UKZGC2410360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891d96da3d2cb9b96661e8eaa0fd47070e3794b53276ffd6289a5c165febb21b. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:48:31Z), 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/QZNWT2205647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6fa6c6974f9818636f6b2de0b22f72ca1a1247cba7242f54e74b3235d858a54. 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/UKZGC2500592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51c069406f378760eef5b11055248a3bcc2071d0d5ea66c43ae7f59a0ebd88c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SE5BU2571125.