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 0xc7b9f12a29912408b78c9028661b89260d9cee3e1244291f9a364628a48669f0. 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/7c1a8283-2e09-47f6-af27-959f655bd303.json and https://artists.proofprofile.net/proofs/artist/7c1a8283-2e09-47f6-af27-959f655bd303.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 0x9b3b9b26abf4b12f30d6ee8aaf209cb6e916c45df88c4dbe05dc1b8558de01c5. 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/QZHN61996693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1812b4b09169c919eef7459ccef0aa936c3a387f17c6571132d7df4c9d13f896. 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/QZNWV2005194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25afecd42f2db86fff71664d0587e9100072ea95dd994de4397869855ea240ca. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:04:03Z), 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/QZDA82175581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc71e17b45db81aa8579360e65fdb0276db343b04ee3edeed722aa2a1c18624e. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZK6P2188898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d5fab60fbe63d745e8668fa46a71538a3ec2810d345046dca73db8bf71054f. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZFZ32287004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30804d29242e8b7281fb3de153791561737f3748becdc9da43e73bcbb089c39e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHNA2264427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93288fd496811055fc3035d3c1e2d4c89261d8f0120fdd7cebb1f84cbed058da. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZNWY2229521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58246a57733b22a596d91c08d3fea8f0720b6cdfdce6a24d3be52c59ab792f80. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZTAS2295719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297b083c018745188ab2e6cef8ee323587826161e341bcba48b60c8d51bf0bd9. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZTAZ2281603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7606e6ef240ea1848eb32bcbe7c1f74cb0accfd438ffcd0ebef9fa71077a2d6. 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/QZFZ42340129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d081ebb3c882acd90c5ca5647c6a007ad3f7ad631a7eb7623e7cc023ff7bb70. 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/QZES82314840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc578d81becdf324a98f4084ec3f3ee8c02fcf580bd3fb47931002c7c41224713. 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/QZNWQ2380292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da13f7f17ecb20781ff19b2ee22978228a0e69bbe4ffb2f5859498f66ed2b9c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZNWQ2380293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4c8fee2706923ed8b39088e7c1bdc9413407338361ce9012531ec74f659679. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/KRMIM2408642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1908e31ad765d0ba3524d522daf6663edc7ee31a746d0f072a6a7eb2e01d7c21. 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/QZES62455325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424a56d740c1fc891373a6ba6954be1acbfa99cd5228b20b41076f37bdd2296c. 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/QZES62455327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7606e6ef240ea1848eb32bcbe7c1f74cb0accfd438ffcd0ebef9fa71077a2d6. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:06:24Z), 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/QZFZ42340129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ac14c39573b31a16563e4193d87e5d05bdb2dea463a4d0a7f07e8e1ea94f44. 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/QZES62455330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72045f366bff1f2be06d19b426d0b8378bd01609c915ed2fdb268ef8cea8244. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZES62455333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1be9775f52b94cb5c5d5c616c6270de0510a155717c33d90885cca62fc8d499. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QT6EC2570798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b49f930c0e6952d61a0e40e6be7548debd5edad0297c7d3c8355f03c5a0d3a. 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/QZHN92393508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93db74361092b0dc5fba3ab92eb1c75f2e698772b2a62b736129cea20f54b866. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:54:18Z), 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/QT6EC2570799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09bdd2b4121103642211350da94bb97e23f56d7c18f7d3b1548a935913046cc4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T14:04:58Z), 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/QZNWT2464232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ce81b2cb779db88e5741d59ef35390d4357833d674d35ed1c4c0003ed80715. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T06:36:13Z), 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/QZHN32157471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2554d76f8d72024769a1958da6ba5b5860cf25d8bdb6d9941833adc90b451f2d. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:19:23Z), 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/QT6EC2570801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee82f5d6abb73ca41831623a35ec997b622a9590a7833f4b66ba7fe7004e2d6f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QT6EC2570802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67f58c811c20ce5d817883c996cfd5338a0e688c6c2380ff791c40c22776103. 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/QZWFE2534459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4212db7e79fa564f872b91a50beb3473fe72f61936d1eff62816895ab620492d. 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/TCAFT2192552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa306703d3967f5fb4e92cb277b37c4b53df03899acacf9515ef4977a93e9774b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAFN2172071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8d95f7956a1f3d4c7d5349e6cd5d9bfba23fd3386222aad5fb0b6c8864493c. 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/QZFYZ2471952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b35297b08ebd2d28981ae283263366cb701d2cfc53b7ff9d87667aa5f76126. 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/QZGLS2445450.