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 0xd1c7dadd792a637fc27e6273fbeb56fee24f8a3be12c13bcda7306769621a9fc. 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/23983d40-c478-4d89-9514-b8f0d1cf5b8d.json and https://artists.proofprofile.net/proofs/artist/23983d40-c478-4d89-9514-b8f0d1cf5b8d.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 0xb7f04c60e1eb2939c344dd8d77eb720c76e0809f3225ff50b51cf1117da0d320. 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/GB45A1801307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0609322016280a972cc8aa4736dfd465e91f4fd1e53476fab961554accfa70af. 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/GB45A1801235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a87163d515c31c037b8c5f41b498a13afbad25ea94409f74b3ebde42085ab74. 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/GB45A2002453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14b7996d710501d035da5c5772f51508df0660b98053b127ad5b42c161cc94d. 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/GB45A2102594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc973fc97091acabfa1a0c90774b5ae61f600b0a294673b136757b9e33cfe9fd3. 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/GB45A2002499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b5ae578b28a0e1c090ab0b1d817e1a2a20e2ed413f0511ded7d94bb554470e. 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/GB45A2102595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2988efc273d4b8db9457fdf2e18f8ae205328df2db3ede6363a172969d894baa. 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/GB45A2102596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035d38fc08c6367cd544a53b3268703646088b0de63019c47341a542d9b325c0. 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/GB45A2102597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e919f4f0cfb5de101ea7a79220a936e544b67fca3b194a6536c2bac97280c10. 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/USA2P2420536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2436d6129a330718b8cb753c0acbda235cc35573121b5c1772408811247f3ba. 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/QZPEW2413930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c89088b0abfbd8cfade022471d125e2b90c8c6b0a1d46f707a68b275ac6f97. 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/QZPEW2413931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365c932c18682c8f985d48c4a8bf0695a46000b812b70f45c4ab5e7d15cee08d. 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/GB45A2300140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c958c6414c9e0b82932bca4582c492c995668b5a8b5702a30a74eecbaefc50. 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/GB45A2202932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc973fc97091acabfa1a0c90774b5ae61f600b0a294673b136757b9e33cfe9fd3. 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/GB45A2002499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a87163d515c31c037b8c5f41b498a13afbad25ea94409f74b3ebde42085ab74. 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/GB45A2002453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2aaa89ef14f45821fd0a036b234d368501842be8b653e998e7fec114e3e249. 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/GB45A1901700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648b0d97d48b732afd765591dd1852c2f5269608da98bfb38f742829aa75549f. 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/GB45A1901701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0e72f2da37f117564ddea73f0fd132075dd9a619bb6e115e4d45e068b0f043. 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/GB45A1901702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32518ee715f6b6352ada57d1895d42f543eef5fc70f81d90fa54e2c5dfa12cf6. 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/GB45A1901507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0609322016280a972cc8aa4736dfd465e91f4fd1e53476fab961554accfa70af. 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/GB45A1801235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e3412819001eb0e4403c71dbc50fabf36b2a0840a7be279b2dab48cc7142db. 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/GB45A1901541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78ab6b23d9fcf32fd0634f08dcbaae27a33f50b5953192e0e1fa9bb352cc4bc. 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/GB45A1901542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f04c60e1eb2939c344dd8d77eb720c76e0809f3225ff50b51cf1117da0d320. 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/GB45A1801307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6714177172ae2ebe7724aa8d2262ba4622f89d130d0a66091a8402ccb48ca774. 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/GB45A1901543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2cd1f3787a0d17ccf198d88751c7ad2d70f0ce11388fef092094f312fc62a1. 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/GB45A1901544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32518ee715f6b6352ada57d1895d42f543eef5fc70f81d90fa54e2c5dfa12cf6. 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/GB45A1901507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c399ca80b7c6675983bf53b990bd44542a39098bfdfbbd9027d9ef62d10548. 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/GB45A1801015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99855da0c63b5ca9c50bf1cf6adb1365fb829b6337ba88a000305f9c0d3a57c9. 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/GB45A1801016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae9efd316349095abdb7254658bdb92320e8b874ef78f5929aa46490ab3308c. 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/GBKPL1790660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc2d49ce7c00138d7f0fae4ea8227e889aed39d8c4e53c828e967eb08afbcbb. 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/GBKPL1790661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd23687b27e4cd6dc6e301b9275b8755f286f22b623e839605ec82f739b31a5. 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/GBKPL1786300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c6a697b229574c4a0757c1f22a9339a2e11c347c8c679f8325d52524be98a9. 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/GBKPL1783219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9900c51640742cc2d61da7460e90673565558ec7c6fd353324505a7330205def. 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/GBKPL1783220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d6260e45524d1af9908100b646b38244cb059a91fbe05c789c53ffca3c8ef7. 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/GBKPL1777036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cdd2267fd6840be6ade1407db8abda19c1f2cb034dfff7a7b9ab31abc450b1b. 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/SEWKJ1509401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a8ab6a0169523607212d31f6d5ae85f1b6b0f53ede79c7d95c2b69b39dd0f2. 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/USA2P2430876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d670f74cabb13571be4734b5ab2be8334a393ba2196e49b875bbce3ac8a3fa5. 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/USA2P2430877.