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 0x8e88d74266e57f14687c14c22d2c8fd2b48005a10d05b6e89b2e482b660cc1ae. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d794b517-110b-4895-aaa2-6a856a35408d.json and https://artists.proofprofile.net/proofs/artist/d794b517-110b-4895-aaa2-6a856a35408d.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 0x1fb495a9e28e0697bfd04e9ca3db6819e424dbdc883424e4930fc9061e18a578. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:23:09Z), 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/QZHN72521452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144cbbc1a284dbffb86d7cc348cff34fee779c7996a5be3548be5ce55a6a49f6. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZHN72596493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b369097134451710981b24f225ee86381bd6e6551085f5820592a12cfa8f1d6. 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/QZHN72596494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e54fdfe1ef1ed097e24d7ca40328f6ffab1bae5bc4d292ae70d03fdd31356cd. Chain 2 (Bitcoin): anchored in block 957723 (2026-07-12T15:34:17Z), 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/QZHN72596496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92371fd182a300be717ae0693d782ab8f98a96806633e2cf7b7a9bd7d70c3ebd. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:45:37Z), 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/QZK6M2532003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb577030ce1f8d28bf83d6eb0913fc37b53cf81d1b112b8bf618033941aba6d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZK6H2571667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f050710da2e077e3f30d4e24ec75bad84015d0a5622b51f5459314eb1c5e42d. 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/QZNWS2549771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c02237d95b29f5a75b6ada3a43453d2de5d96655658f0e8bb95ee2e1c4ae9f. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZNWS2549772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5852f382e471db5c60f414affa4c61fc9e6b6075fbac0f912d075af4047be2. 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/QZNWS2549773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e05899d2a6f0f2eacdeb734a0779e40ca8315c308ae452e773dee73f2ff0b66. 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/QZPLR2590801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd622309743b50ffdd1bb831acd182123d1984b3a7563461efbbc5a7341a673. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZRP42594029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d30dab6133f3e9b712eceab3c8845ac873e2bc4a509cfce14f1579c9c5b9df8. 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/QZTB52591197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71b6bb1697ef8608f057275e9eb18c4de60b05c700db29161ed41c1d2e28185. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZTB82555380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1738c67dea2293798e691eb42ad8d99b8c0ce5b08e29bdd45802c2d1e79d5dc1. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZTB92579279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc456651a483f7805d5bcb8351ed917ccb5697e227719de3b3e4b426d68d023. 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/QZTB92579280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc8b7e59762c3419b28d7efa41112139c2e9cb0336953ca5960d3f51151a797. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QZTB92579281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a5f2270b9869082cce330a0890234472f7c472f037b692076c143c682d25a3. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:07:20Z), 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/QZWFG2562938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15eaf9b6cc957d475580ab4f3837f9d65faef0c910ae2bb9586eec123103f28d. 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/QZWFS2525953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8852bc95076586af075a675de3ab5ac34350f814e5d6942c0b1687a77b1e348. 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/QZZ7U2562500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28780b4e04a27ceff4c6a44a62e9cfde23d40395b6f2c4e3f26fd04b2c3ea1c. 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/QZZ7U2562501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648e75189243093cf6850f5cc10b5e8aeaa81cfeff0ca964fcfd3d76f2ff80ea. 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/QZZ7U2562502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b053714ec60da55674d7dde7c7181158781041560132088b2a6868be007f24a. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:47:07Z), 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/QZZ7U2562503.