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 0x6c56b551bbbf4eff04e484d7b08312b67e7a0d2a51a5ace852a7e855b8a1da03. 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/db588b07-7ec0-439d-940d-813f63adbebb.json and https://artists.proofprofile.net/proofs/artist/db588b07-7ec0-439d-940d-813f63adbebb.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 0xb00ea05f8d5e1e7d40f43640bc64d114e218fc4b57f4db55d348c86b6301a946. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAFP2155945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc54344c2d80c31fe3d26d4f1e12225ae847b4f4085eb9a558d642a0441d563. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAFP2155961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10808710ee7c5d09afdfc6893192f4893c42760e439b629e302076d93b35fc41. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/TCAFP2155976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf982b0118ad12b7bc33b8af18aa8052cf354c128e917f983a05a0d005f9bbcc1. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:15:09Z), 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/TCAFP2156018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3967a67a10ef0c766908c95a078d181422a9891de513c305a37efe134a2334. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCACK1537939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ddcdf1b4b91390b1da29ff15bb87bd2321a28460cc9ec6bda27a39311e6a820. 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/TCACK1537945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa570a32827b706390c7f3b92563c4b65dbb8190d2d31729ad56b9a4e687aeacb. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCACN1634616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e5d5ce274bab6686d9da49ff4280136aca1e47095853e03fa522af6f3203b5. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/TCACN1634620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeed232d1cd5759cda5774d58ac7f633fbf940cfcbc542057e05c47e9bf27455. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/TCACN1634624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a4401e87b2996038b5e9c3e3ddaad4b5f35c1467d6b691dd9dca3b27eeb992. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/TCACN1634628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cdaef5def8628532f4dd4fd56a3d3e8e7314b0166ec60e9b70fb90753ca5cef. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:41:53Z), 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/TCADF1762557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f455fa7d3462cdac3f95418a21d6d6fd203542885409d9df7cbd586febd8fe8. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCADF1762558.