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 0x97113e504db406235d78c5f47a4c9cd108e7cec641dd341325e80de3fd3f755e. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d95f5a5d-0ed2-40ab-b22a-198fdab93e15.json and https://artists.proofprofile.net/proofs/artist/d95f5a5d-0ed2-40ab-b22a-198fdab93e15.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 0x96bc94c797559b15681594c1e583e6d2054563686d547ed2c7ee08c1a7496b60. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/USCGJ2053994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e57b6a5db3b56e6e5731159b85088163f2667049a0b7ee5edefa13081db0cb. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEQ022271421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0b8ae3b50d1c4815798a5bfda4f5d7eed06407427733fe6e6823528e924468. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEQ022271422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45fe5338034678a349c5f348913aa33816f5585d4bb355c9fb4dcab4e779a322. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:11:10Z), 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/DEQ022271423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bc94c797559b15681594c1e583e6d2054563686d547ed2c7ee08c1a7496b60. 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/USCGJ2053994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e57b6a5db3b56e6e5731159b85088163f2667049a0b7ee5edefa13081db0cb. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/DEQ022271421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0b8ae3b50d1c4815798a5bfda4f5d7eed06407427733fe6e6823528e924468. 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/DEQ022271422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45fe5338034678a349c5f348913aa33816f5585d4bb355c9fb4dcab4e779a322. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/DEQ022271423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa771f7dd7ee6d55a005b623de2f87e334bd25ea0a85a5980f8589e0db9c4540b. 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/DEQ022271425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e33311443f23e70f6d6cb5ad2bbb7c3ae91179fd6f6053acb1d78e4210b8b8e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-21T09:06:30Z), 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/DEQ022480162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db905bc9d2fc52c099ec4ebf90aa10b4438702ff54d3e702ea34d7711c35445. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/DEQ022480164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79cd398b6332a639875059bb857d287de6ed0761056e98f7d1bc74c9470c65fc. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:25:16Z), 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/DEQ022480158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79cd398b6332a639875059bb857d287de6ed0761056e98f7d1bc74c9470c65fc. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:56:28Z), 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/DEQ022480158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c04f94b61a755d6ddc456ddf1f8c45bce710d4f194e0a096db4be83df44462. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/DEQ022480159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c05311caa4db93876d78b35954ddd94561b5ecffc2f93885d1ad6b58d73236. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/DEQ022480161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65c6f33ff6d994d7ceeb7abc58f16dda48f272b567d2e137fe7f8b81b7c226e. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/DEQ022480163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db905bc9d2fc52c099ec4ebf90aa10b4438702ff54d3e702ea34d7711c35445. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/DEQ022480164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156324df27e9fcb6a99198f953694962869404d0b505e9a00e52b7ec6eccb0bf. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/DEQ022480165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd29fe1180c7e46d20369a599dff6a51386551af62dd68c9c8761caa769283ba. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:26:59Z), 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/DEQ022480166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb298ef62a7140dc5e3b6f8ede165f88c3d1d456110e63d18245544596c3c261e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEQ022480167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c04f94b61a755d6ddc456ddf1f8c45bce710d4f194e0a096db4be83df44462. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:09:37Z), 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/DEQ022480159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840a729daf73e689643af9150822b9d529b01a3e38db4f94cb7609751a96a8a2. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:28:58Z), 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/DEQ022480160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c05311caa4db93876d78b35954ddd94561b5ecffc2f93885d1ad6b58d73236. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:27:14Z), 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/DEQ022480161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65c6f33ff6d994d7ceeb7abc58f16dda48f272b567d2e137fe7f8b81b7c226e. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/DEQ022480163.