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 0x7589a2231f84fb1ac5565a1de4591c4e8198bc911a9e0bfab4ddf245fa660668. 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/93aac274-bb65-41ad-8b6a-9b389a335f8f.json and https://artists.proofprofile.net/proofs/artist/93aac274-bb65-41ad-8b6a-9b389a335f8f.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 0x3ce68a0e47f31a98316625d13861b4ee67d54f199c172571b43d3bfc8344a372. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FR2X41644941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c989cee44f88fea033464b514b0dc38715cc4869a9eb150dfc677fe2d5fa971. 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/FR2X41644944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916cc1512e7deaf18d726479d7ba41619057741adf4c922148fe80274d7b0df9. 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/FR2X41644947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048dd0092a8de0f8db91e2ef5728285954046746a5800284fb4168f456060b14. 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/FR2X41650019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89504a9f1e8e35e4c2c216530837f3f347f24043a3318cca1467473375afc05. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/FR2X41650026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7f25fe26fd1c7877c679585fe1fc2d31e8df648873860765bf9a085a67c92c. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T14:40:36Z), 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/FR2X41650030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117439a1cba8ffe0e320b5de1ac1c72f4d68aaf61e13727b8afb89324ac664c9. 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/FRX762070044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ed737e321e9b4bdc008341093258f5ba979857d119c82897c624ce8370363d. 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/FRX762070049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3a598276743ab2072905e7512ac8eaa019a233fb480310b1900115637c75d4. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:35:16Z), 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/FRX762070050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95105845bba00565c0e2c693752ed5fad78c823f32805cee700d2079025e41fb. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:22:24Z), 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/FRX762070052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769bef7a43b31c25c91d2e35cd9c9135621c26861d9356f3de7fbaa5a3bca0d4. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:40:01Z), 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/FR10S1955573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d10bebabb92e02d1e8d1689434cecf60d9431173c046528ec1073b1e1009c8. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/FR10S1955583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24bf100a9630097b9a368b11893dbd3b16f44fed733679cd3a6769aee2beb050. 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/FRX281906464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609a1050a188f07897f5d97abfd312f046f5ce20de497b8df09040e0a974ef54. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FR10S1990460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34fe61f7fec4f93b536360b9dccc084c7eb5a82304f02e75aa1acf6ca9975d07. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:39:35Z), 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/FR10S1792337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa080a34de4892521a99d1bdd67606b0c6334b11d8f72f169258e07c623d9b4f3. 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/FR10S1792338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc0badda5cc01a4671aa7c93bc5d1a0a57689f0c6eb20cc68199d7d86096e8f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMPU51295025.