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 0x27b2afdb0ce1f2e944563f21c7c6f444e4d6d0dd1633c7a38e0257f708fa2e77. 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/e8319b91-0949-4f8c-9bdb-9761a3e8cbe4.json and https://artists.proofprofile.net/proofs/artist/e8319b91-0949-4f8c-9bdb-9761a3e8cbe4.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 0x5e6fb92b1563a336e315cae12f4403802e1d8ace77ae4f4135429c803130b5c5. 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/US7VG2226888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639e7c9260966af5f2cab18cd9a71f599765fa2bb5ccdffca5806faf6984e2bb. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/FR59R2294857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85da05a2075bc954f8ee5e914bfe7a764cd6723d020701482ad4364ede9ddd04. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/RUB732040010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8f07940c694bbe2636952455af18a44920155e9d7327d1df42afba8114a3d6. 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/FRX762208012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3249ec7858f20dbdc7f51aec0a590ebe8fc75ea3fe4c8c8090ca5a0edac89b98. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:51:00Z), 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/DGA072288042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15c17789c13dacb0bc042e10487407c809d160f1f2d0d342aae81b631ad02aa. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:52:00Z), 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/DGA082252971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448056aaaa9c63156033c4f659c6773757b17215c7c8f6adf3aca5bf24deff11. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/FRX202322910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc93b4587d95a1d50887395d9fa19040b28711cf295ffddf00d95c26eb37a15. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/DGA052393533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c8f5cd72fccf608fba0dbb566ccc88b8e74fd7c79a5c4b568a3f928c80e788. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/DGA092317609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb386130fec482e5a1b8e4d02662a8667c21c163149a4f1492f88897217c3cff8. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:36:51Z), 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/DGA092317610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88ff40b03bcec6e50692ddbf7d1657fbc81dec646c06511a3da2d19d225150f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DGA092317613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d53fe0eb62d385db4046767776678579586f426c14986823253610550714c51. 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/DGA092317614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584e6b2e5ffb69c6b90d68327610c66aa0bf17bfeec34be77a0980514c60d926. 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/DGA092317615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779b29a0272b5ba57cff00ed373825e78aa22d2fd23aa763d23eb096198f5b6b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/AEA2Z2464691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e7a22fa554aea9fd8b58af3310fb52ce8c792f7bc81a73473eb6f0250bdb21. 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/RUB732079605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116387ae28b96017fc389c1de2d7dccf0a2f7be9e6d54faa94efa159a7cbcb0a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/RUB732085721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138cdc8c9b06c82bb2d6848c8e1aaa21ae550a98164b801c4cef833d74a6745c. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:00:53Z), 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/RUB732085717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf567117efd56d67cba847ac152bf767201d6bcbf09caafde6f5ccccb61245f46. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:29:19Z), 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/RUB732097669.