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 0xf559183841692413c49f70f3c114a405133a98c543cc275c1dd074b97bff2578. 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/28be665a-842c-4b61-846f-1225585bb0f7.json and https://artists.proofprofile.net/proofs/artist/28be665a-842c-4b61-846f-1225585bb0f7.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 0x0f4bb3c85cba8f9134493ccacd1816fa06b95fb001ad6e36bd96c716f15e02be. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QMFME2246220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6ca896649ebebf4fb4852dd1471cb85ac9db789dcad6c56585468b92cbf1d9. 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/QMDA72217207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1876049414c240f2289f2c56a94550abee232a259581e3d3d8d04d62df97d300. 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/QMDA72217209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5099ef56df96fc4cb83af24ee299e5536d339a47f3ad827456454c23cf88ec. 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/QMDA62269393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb05cef1b7e9affc1dcc09019bd57ba1d68f79f42f2e45fbebeba2dee4a4f38. 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/QMDA72217187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33beeeca0d65a515b5ec93a62256f86cbef805be6ab239e9bddafc4b7764ff3d. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QMDA72217189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6862472f5cff89422d195a256c52665a4e89c9a43da46d272ec07b0fb1bec506. 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/QMDA72217191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e4efb21f63bffcb6609dc53a2b568a25bed54157e282e994e091b36881af45. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QMDA72217196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4680985f62cd2eb96baf7b529c738ca06a559ea21ff4d7cf87674f204df0bda. 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/DEUE22449471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93883f8084154b495c7c591b1c592c020e8e4b9a5aa4888276fe838206c247a3. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/DEUE12417024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fabe90a464dfc0ef303e5613ff850bd5a784e1ec99d7949b68a2d3474800f7e. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DEXO42335262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4936c18bd26174341ffd536b8e144f538bd8163a2c01d6341a05e2e6d02a90e9. 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/DEUE22449472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a566a960684a0404f92bb01a328203ad830b0a2b128021103468e379747bf1. 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/DEUE22449449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2d85760388382a13496183ef382e0f2838e6ec35001076154df77f00a648a8. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/DEUE22449452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f6845857524456c8715f351d8e408619222145650f734a6908b969fd71e491. 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/DEUE22449453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367d1dc23cb87ac7e01fa183ce668b10471dee3416781eea189a7cdca411a1fc. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:03:56Z), 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/DEUE22449454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfc8cc9d91b1fca38d6545377d816b49c711d1367909e7d646b771af6abef40. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/DEUE22438382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f12c13fd0a6fee24bda4a47754ba94df47c9e0b207cd9ad37071e3c2398e313. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/DEUE22449455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60ae378ba0f5b481682ecb76ff24b864ca8f7c56ab12760df9e153cf427b37b. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:56:29Z), 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/DEUE22590998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e52a2a8f2a4606af34e642bc735fd7969e44cc617d1280863165f1bf4f9e45. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:10:42Z), 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/DEXN92546867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb20dc5320c5e8a81b12f1c4f53d281034e2247ca5030cd33533f7b4aa15a86. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:26:16Z), 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/DEXN92546868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96e9052a8362b6766c54863196fdd75546f5e92f46b05887e41e4fd2b288129. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/DEXN92546869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38efd93062f4e67a735ee535cf69a3c0a1dfcd1899f1a8e32c47da4201ce60a. 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/DEXN92546870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2347ba9b2c2ea555360dd554c845d6ad67fee9dac5bfe3076090563e9956a93. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:11:50Z), 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/DEXN92546871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f8be75363dfa655a85d36e76bba03840d3b6702f56d201c37857eb87c47204. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/DEXN92546872.