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 0xdb6b816d3f629af9de464f1ea7318821fb8a8e673d44e8dcd9532becbe309099. 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/cea6d35e-5363-44b2-b020-e71dadeaea99.json and https://artists.proofprofile.net/proofs/artist/cea6d35e-5363-44b2-b020-e71dadeaea99.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 0xc952d6969b13f4167fe1a73fb32033193323e16e6643699e12098d0a9c0bf2b0. 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/USA2P2114898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d6fb1f55b4ba511f4ebe4a142d1764e5aed388464861a5fe4cd907291d5c40. 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/USA2P2114893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da2af81e790e4472e0a6aa048e301d6ddfe4f2ace9f41cb1d71de25b512ab20. 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/USA2P2114892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c5482d69c3d65a9c41cd7b5eb3c386ac9da3e12b50af643959dae3c28f5bbe. 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/USA2P2042034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560161093f3980d6f6194bf0fc10a24a89bd97cbc4fdd11cb00c89b1eb4f619d. 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/CA5KR2001702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94aabe8a0bc8ec813b9697928121ac94898a91191797ba5948bb5464e451641. 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/USWB12207399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e09b3be1b6532890baf5d28b1df7f88a005dac4da9ca9dbc0686a97fdb5e4e0. 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/CA5KR2054715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2e1c7dd43c3583f2f8400a1c6c34c314445f1db4bf67b2e358629c5c4d972c. 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/USHM81979703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ef85c61031331f6506f29a9b19ad920985575363e6cf82798fd276df12f466. 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/CA5KR1964782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd071e08f2ff81a4a81e89c403af7e176af4fff4394244fdee03078bc386d270. 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/USWB12305325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856773b4ad1022786e8e3d338656b0bf022c3edc53365a5ed4b0eca67a6950f7. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USA2P2209923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c7eb5a9d9a0391b1c7aa9cd632ef47f533fcd2369baf6616ff70629b915950. 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/USA2P2152393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f477fd52265549acba490db5130da85688942835c7e13655dd4ed0d92cd3e4. 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/USA2P2152394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd10dbfa13edd19a238172c5d95970ba02ae01e2323676bb94aa824245276f22. 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/USA2P2145770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f37acb30a7f4bfebbb4642a39526945bc44745f339390194f29a4eb1a9c168. 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/USA2P2142501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39642a58722166abcfdec5d4c49c8f7268e93944715d1d339dde3496a7b2e3ac. 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/TCAFM2161039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc398106f41242a6c62451e7a0b37640b192aa90d761f2171bcb215f3b5f2f6. 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/QZMEQ2518031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1027a21c4963864eba082f31e47f517a0cec8b9c3c22998dbd7549409c2f0a16. 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/QZDA52577327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4293bbb684c19f61ee7e1214f00280317d7e1482030ba5897880947e9c9f5c9. 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/QZZ7T2408025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949c6d60e62f0fdbfd57102fa842a67afc6848d422ebe15184060a4b73b59e2c. 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/QZZ7K2434747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7452bbc01db9ed1f27683bbcaa7ea224bedb6686efe7c2bf471b329923c2d0ed. 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/USSM12004481.