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 0xaa36699239d1393601f81ab40dad6c6a570c3c1d8290b187094a12c0dd4e5fe6. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa72f130-95ed-4ad6-b518-0521f69ce5d8.json and https://artists.proofprofile.net/proofs/artist/aa72f130-95ed-4ad6-b518-0521f69ce5d8.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 0x07b87e81c891d1e9b108e7a9da5656d859972c0bd4c98deb0a89abffa3fd99bc. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:13:20Z), 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/DEZB52310251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab099d48624c10379f926f15cefdc11ef8b461388b895ed9d93db2c20a82fc6. 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/DEZB52310252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d71aacea6feea1c2253546bf47a73916f1c4b832c24692295892c77d82d18ab. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:27:41Z), 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/DEZB52310254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce291103bd14c822598757d3e7726301659f4ccffeff2d276a548b05aa1ee92f. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:40:44Z), 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/DEZB52310255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f553ec2130aa09b7aeba4ed813c1b1208c3decb87a538795e6290323a2dea64. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEZB52310256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e80648f06929e60b2af705a62d8d63e69ee1abb0e9c5fe4bc01820dd50a05e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:48:04Z), 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/DEZB52310258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd002bc8ee0fdc59c63fd3baadcac4b9094ca756ffa1bafca36ca87065f92692b. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:42:11Z), 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/DEZB52310260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbedf933a13a8bf5bcd1f6fd0686bfcaa77ba5c65253966ed55b0276214ab983. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:17:45Z), 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/DEZB52310262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829017e0a3c793af90c55e8f539ebabb6f0da722b8b66647aa4ad4e1ee286e59. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/DEZB52310263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda69dad95b71c2d763a9771895128c72130b4f967afa13a96a227f06b74cfdf2. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/DEZB52310264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd043f42d8b0a322ea53c032a1910c121de55c078b8e27df55f52680181c6e748. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:45:30Z), 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/DEZB52310265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5596c6b6827fffb0e5575f4503bfdb9b99cbe64dbe10d3a2ecb10817a076c5c. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:16:45Z), 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/DEZB52310266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57893d37a272a8974bc10b105872f76265c044f566d2cffd2aac8b65a2c52763. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:50:13Z), 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/DEZB52310267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18eb6908e1d42b4a884d967331f89bc3d8fd3d38e3d7fe35722ffa22008a7682. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/DEZB52310268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba53c05999dd6696829a1780059a0f128ebe4e94d335362f15fe78cda70cf8c3. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEZB52310269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28329032c64172fea5640d3ed28dee5e07867844f77314b054bef56aff54229d. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:25:16Z), 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/DEZB52310270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807103af4b093a00244dc6e9d57d902fd09343e948f88b24d08d741057eda70f. 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/DEZB52310271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534dab95f1c2df81839d11805df90ca115d8d6fe3355e87ce928b3064c63962a. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/DEZB52310273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6c48808cd3f109cfc2bbececebf8dc4a22de351f9ec8e0c9523ea923bcfe12. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/DEZB52310274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505180251639412b3ad48753a55ad7e09cdf32ffc8c34bce5df79c3e971a1329. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/DEZB52310275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f24b0d8112ea8753ad0e4d6b226850e19f89cb374d95ea6edc7b6e6d020c02. 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/DEZB52310253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243a6bc7563d59e0d498887488e0527a51c8d78be5631eca03b67fc5712c7e43. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/DEZB52310257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ddfd2aa9f87ce9a46da946e1ce630ef9dc2d80e3565aca2b4bb86a65277aff9. 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/DEZB52310259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955c74d7758312961e272c9691c16adf184052b0ded1732141916610508bb804. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/DEZB52310261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54cb99e8d60c089d218a2c065ddd9bb2d56f69a778e70fcb9b290549b37e51e. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:44:09Z), 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/DEZB52310272.