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 0x12e5af015959f90be2f279526661196e6016b7e2d43b468a68569e431070db7f. 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/3ca4a692-4469-4b65-b035-0f542d1e5ee4.json and https://artists.proofprofile.net/proofs/artist/3ca4a692-4469-4b65-b035-0f542d1e5ee4.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 0xceb62d21a48031134bf07d2ca7f24a7217b29ed2c7697c0af3a5bfff9295a258. 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/LBA131700618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaaf455923daa2fb541f04384393cf097a997c08022d1f9d06cab4d32293414f. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:56:20Z), 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/LBA0H2000886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06c178d0e017134e6a5b76d4cce540d5b077b3ffed0ff3f77a788a184fcbb6f. 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/FR2X41946364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd622199efcd6e7ccc8afe27e5bfb7c98576e0d0cb46840dd044f504014c2462. 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/FR2X41946371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3407654a2f86eaf1bb7cdf90e58538f83dfb4a3a00a3e8a390ee52fbc32791ed. 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/AEA140902832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4446bd49fb872134a9fcdd953fc86f8a59722cb95fc57512e0389628ab29fd. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/AEA140902844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27078a11f3edac2c82093da50a44e10b2b51378b78c11df846c7d64cc5901bde. 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/AEA141001621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1543b78521394a022ccf90f07b80e3224b1cf4d3e669e2d7ea547e17ede85e6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/LBA0H2000887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946c94856b420ca7ce62eab8378d42be88f98fb67ca10c4b4f80efe4ec84684b. 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/LBA131501424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700a930cd303f3ede8f55313246de856cb95877f6c87ebedf24c2c6f9b1e700d. 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/FRX201782321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39a19baffe160ed61644c5fa128084e7841483fd9cb62694faf04af90e99383. 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/FR10S1875454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0ecf18c3c5319540f05e0cacc5d691bfca16b4448e025d43638cd09d02fd3d. 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/FR2X41825369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34acc66c6d727007adeb172d6d1bcfd207e64d6b924b88db38ec4847235375d2. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/LBA0H2004474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07bc5214eca8f0b4c543ec9dc68b6993f79949596fca079bbd3b7c731b823156. 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/LBA0H2008354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e7a5df689ef47eca87249d0703cd8dd5c668a2c9771ade921a0780ad0a0530. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/LBA132401240.