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 0x349f30d62bee1249b0aabdebf6f1277d6b0f4ea68ccd2f86e9ce9d82409323ce. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/88c5795f-c95f-48a7-9b39-befeb45b6fc0.json and https://artists.proofprofile.net/proofs/artist/88c5795f-c95f-48a7-9b39-befeb45b6fc0.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 0x5b389c761ae20cc1241ed92dccfac415f8183cacc1a84be81cb69ca7f2a4b90a. 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/CAGOO2593196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f98e23e95b7f94ef057c6c370a95f11973d2ba86b95c33ae4e4119c3498a5b2. 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/CAGOO2593198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333715b66fd39c669eb58856aff41dc5da410ae07a0cb273c19a8f82eb1df90e. 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/CAGOO2593199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37eae9566b883530c6119dcc714642613852a8d27a72ccbe60f9880dcaf11886. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/CAGOO2593200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89afef6eaf4419070f5a64dd6a62f3f1ed7e8e72619b2893728f5914c146bfa7. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:54:51Z), 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/CAGOO2593202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5546aef80b0e6262a6766881e7cfac2355308df2876218cd1eb27a54415bffe6. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/CAGOO2593203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1145ec31dd8053e6165b15d810cd7fc91b2c98823a67c39553bfeea0ecd5b8cd. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CAGOO2593204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d521a82ed94e949f0e8015cc555050e40ffcec3ed6c5014847716b68fd008e. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:40:24Z), 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/CAGOO2593205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ee26aa7a0d0243523b19e77875d36388b6813af5d3a1337787ff9de6d334e1. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:00:42Z), 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/CAGOO2593206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68a95d20b35abd773a9990056451e08debbf0f9cb8837104358c2ada0204e26. 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/CAGOO2593207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d59ea2f150d20b6ee96090714cd02dabaef5a06cf1039e656f9753e77443ee. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T06:36:15Z), 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/CAGOO2593209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc387e23c2ece61564d8c0184f076ab5ac5ad0724e783d48b872d7b123d3434a2. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:00:35Z), 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/CAGOO2593210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d930e1e8167b2547ad5cc12c6ee2c65a40f5862537ec8bbacebe325ddfd181c. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:25:34Z), 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/CAGOO2593211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852b38bb4bfe918d392136175b0ec76b1513bf04b5e838cf16d83eca47492f85. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:42:24Z), 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/CAGOO2593213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64eee054555236ee7467e25780d140982953462c0ed4cff63e88f0573ed6129. 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/CAGOO2593214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7f09fbf0929e466f2ecda822b3633cc4bc142b5337e2463f7df247357cf435. 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/CAGOO2593215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869060335b8b1656348a70172a890ec6cb800a7e70ca00c5dd70009ef4612a9e. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:06:50Z), 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/CAGOO2593217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99cf6bab8c143b4dc7688a243d50db9e14b10aa5343bd50a7c6e455d9e5b59de. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:11:33Z), 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/CAGOO2593218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db4fba09a2fa848efaa05757f71e2a58deb01c199eca675431ca8616bb4c67c. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:31:37Z), 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/CAGOO2593219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa775c0c0dedbc6da65da950318137b7027326de2f21990baf06ae0c6a0ceaef. 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/CAGOO2593221.