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 0x3e1372293c74518bc25e906af30775b6cdf89f329886860f2b8fc54b0a4893c2. 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/00d6fb42-d7e0-4873-8b24-2aa998748a9e.json and https://artists.proofprofile.net/proofs/artist/00d6fb42-d7e0-4873-8b24-2aa998748a9e.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 0x87121aec6251dbcbdd2a2d8eb245ab3cb7d654e2f73962a3a0568829bcb6a728. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/AR8TN1600097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f27f33b52dc0d0ba723a571a7bca46668dee4fbc888319dcafe05db3c0f6d4c. 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/AR8TN1600100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b6ded1864ad478f4840b8aefe9cef9b17ced8f02e18fe5996d8b6df6afa7cb. 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/AR8TN1600102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec973b6a37e33325e842d1e73e90504676eabb2f77c28a239821edf5092fb026. 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/AR8TN1600103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d4391f9668c300f0a3f4956101f0527bd59971489b70b08cee100ce07aee6d. 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/AR8TN1600104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490cedfd6003176ca9c5968ab2033caada7b8ffedc76fb562f5d1d497b673910. 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/AR8TN1600106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f7498951b393826a194cf3d374391eb8a1cb3dba7a7d5e25f25e86bb22cefe. 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/AR8TN1600108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc697d502026b99800218852905d8a20d78966b9924ae641a802101533bc478f7. 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/AR8TN1600086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50ecee320dbf14d81419415f140325aa49eae74b8070eb65e726db3679967d9. 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/AR8TN1600099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f3592c82123146b442a26524c39d75b7da65e8238da71d8204058c187e3c23. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/AR8TN2000321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6fcb593b9ca0883989d8e1aa896d5c1aaf3b972f11375b1747509f3e9f9bd2. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/AR8TN2000322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57847cf6b60db24a2846579269fa18ba294f00331e1f2d9c86f4fd734c1b44d. 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/AR8TN2000323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12518c2dcac9c3749ca7e2e34fc7d13bd740c6309ecac2c2db7bb69081457c1. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:36:17Z), 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/AR8TN2000324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77b64a16f369022dafe49491b62d2d0c007174396f37694d9123793aeb69358. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/AR8TN2300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d87a497ae5f4e974ca04272e2887de08bd449164f3007e1973b3fc63f0cf25. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/AR8TN2300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fff15684a1299bb23d1749f6e41826b3bddd61a75c7f4366857b32c127b12f7. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/AR8TN2300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e7bfb5bb2ffca66e414143ffff05b18cd57e1426c242daaf1be3652eb9034e. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:07:02Z), 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/AR8TN2300052.