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 0xebd5e373b1f8f84554959bec3cab2e7fb19fa29025a39e64d32baac69773168a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eb68b8de-94bf-4743-8f4f-2d7b80392a84.json and https://artists.proofprofile.net/proofs/artist/eb68b8de-94bf-4743-8f4f-2d7b80392a84.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 0x665493684a6af0b8397edf5cdb62c8e70cf8466ca8a43d2dcade6bbe88ec51e0. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USJ3V1486694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81c675e1a1f0bf2896e28a606d6e861ed7e5ce4de033f9afacc20aff8c13715. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USJ3V1486695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9681060952ab432d809172d1896a4ec198accf547182bd853dca2b53215f5d0a. 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/USJ3V1486700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8052743cdb890cf26e5e3464699849440ffac2ae23f0af833ebc1f2766c978d. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/USJ3V1486704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a324c0eb554757f29c59be462e8a2e7fd4af386687d5d3afe2600e2956c960. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/USJ3V1486706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09509cdcdf14e6890d2d50204b2acd2fe24f7c3a0c56eaa2f3945f73db3c01ac. 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/USJ3V1486708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a8c1f9e66807a36f21dd341fdb8397da9754c68e408e122b2c3871f2a355b2. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USJ3V1486709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7856c4fbb2eb510ab27673a9d97ae96b2281613f878e63281e5b7946913ad8cd. 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/USJ3V1486710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e86eeaf34b089c4a809dbf45ee8337758a3c1ad406f4f4700ab52fc737f342. 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/USJ3V1486711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb307b0f6580dc9da6f8577b46498c9ef390f97845df527d693becc39984fcbe. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/USJ3V1486712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c2771940294c041ccc861118731170136387d3fa163eeb12340476274376c0. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:10:22Z), 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/USJ3V1486713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8005b7d0aa15461be81d466f63e92f1c0d320170fae0309640037579d7850f9e. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/USJ3V1486715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d32dd496514942501a9ef1d898155aee2231262d274060fb89d2e3a0c16cc36. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/USJ3V1486696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837b6edf9316c8c30c68b597b246fd65fa75fd0ca2eac3c818a70f07268fcf23. 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/USJ3V1486697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4cc3c3dc087f2fe20ecf54de32f1de5d54a4e65daa2568392c2d5fc8dc5960. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USJ3V1486699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9681060952ab432d809172d1896a4ec198accf547182bd853dca2b53215f5d0a. 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/USJ3V1486700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad6d1410c6bcbbd7a10aa23be2cc9888f59b423e18568b0e71ce717d9d42035. 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/USJ3V1486701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac433adf2bade2ebe99541a50693c8d6615275056164413635d44d49a9f3c066. 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/USJ3V1486702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748fd2d6ccac6ce3ece5a2f677bc2ee99916efbd70b41fa877485bbf494801c7. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:17:37Z), 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/USJ3V1486707.