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 0x7bebeb334ff9f008d30e660b823487066e832ca280f03fda1f2c51f3e85f3a25. 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/e14337d8-8def-495b-af70-a8a7f107de18.json and https://artists.proofprofile.net/proofs/artist/e14337d8-8def-495b-af70-a8a7f107de18.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 0x835b5116b5b1ffbcde1ceae2cda4935762f35787808adbf4108f310e73f24b59. 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/QZHNA1926043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30e6bec9be5cd08274e750558e0fde2667491bb73276c01b55e18cc35b60857. 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/QZFZ32040955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264429eae922d1fa9031d0f3de44232e5760d49b6fe613aefff10a857b81f897. 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/QZNWR2046607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4c454a78bb60d90705aa4f6e486feceaa22754b00afdfd662f25df55828452. 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/QZNWR2046608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa8f48801470a59dd258ee23fd967f11d4c6b8db734ffa5a12870bfc772dcf9. 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/QZNWR2046609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd89a424f5a8524644ca3b1511de2fa7e45b3fdc4176a8b1143268433f388d12. 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/QZNWR2046611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ea5bf8401e834bb7f917586a88685573a8aa5d082d8c6766217c86193c66c3. 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/QZFZ62250593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae0bf5b9ce4a225657068aac69073f45caabc076a9c7797977a442927d4321a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZHN62237303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581ccb4aa4b08cf5bb68cb1c0ed36c3a26e44795a15ccd3ae35995375b70c6ef. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/DEZC62322652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6323dc80f9065b986d8f5ae11435b9a72be715bc54c8dcb3462cd2e2545e838. 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/DEZC62358630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ff649b3fc0ba8459736d55c359c067e94e738a8b68632d7ea87cbe1efbcbdb. 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/DEZC62358631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84cc020d0f7a565dcf42e1479a7a872ce181836f31bd6b239c62295d04a14f61. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/DEZC62291229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10dc3d41395143d9c1b826fb5fcea1eaff055a3ab3e1f4cbbce9fc412a89f99c. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:05:37Z), 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/DEZC62358633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc44b1d5fd71ae609af3e28e0eee29dce8d68996c597e5772b8efc4c2f60f29. 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/USDXS2401551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc601493f3255a14eb93ade71297a868cd2d66df608ce1a46637e28a234cd573. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:24:47Z), 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/DEZC62452720.