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 0xac6001bef9e9242889a70a5e87a53e537c9ba64c24bdb774a8721e0db296e252. 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/042bd488-8ad8-42b5-a591-b25789b5194f.json and https://artists.proofprofile.net/proofs/artist/042bd488-8ad8-42b5-a591-b25789b5194f.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 0xd2d8b7d9cffb3ec73a29c134b92258098bcb5ce0d55fe29d664481eeeca8529d. 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/USDY41714675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eec284be55c5e30b13d03beab8fb3e09c1a75516ee7bca568dd293fe8809d9c. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:10:35Z), 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/USDY41714677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b021bf39e80acbb9118a492264df7753fce8cb1aacf4c8099e3e4859cd39574. 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/USDY41714682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57aef6dceffac1ba916e4ef3a06736dd2126970e5a591e2fe01ab5b89d438b4. 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/USDY41714627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee478f55873d8e7cdefef1f29ed20b93ac5d10391b9f54a592a1031cd524eed. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USDY41714628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7caa74448d83eabeeefdb406bcc383921da0edbbb78274ae3ff95070503e3e8d. 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/USDY41714633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c4ec519715b250c1b564aa01be13202d4a7398765e72d2f4ae49133c9cee51. 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/USDY41714647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d6158be4be232778e3a21ecfd727701cc15c10a0eb2c40d795a7660a4e22bb. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USDY41714614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6511cd61be8e3ba3253ef7da2cda6bd67b40893ef0500993c4b2fcb7a45e7a5. 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/USDY41714620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7f050fa1a64c2a4573df99f6d4f0318534d575077bc73867bca2c7aa662a6e. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/USDY41714621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c10988b1dcff649399291cf4f477ec05a2eafea7ef2f63b47e36846bc5120fa. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USDY41714622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85eb67fee425fc66e0d63749a96f1f2286eb82b5b66e20628a367222af1fa4c. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:54:52Z), 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/USDY41714623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcec7c015067501ae4adbc77443c15644a6a15cc1173536295cdc2e449136a90. 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/USDY41714600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0338ccb9cafa8970b57c587a5f89ec3e2b42d69fdffba7c1dc390563db572e2. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:32:12Z), 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/USDY41714603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ca9a89ec532344a82bc7524f3ad51443866eebae3da1ebf80c5470eb794b3f. 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/USDY41714604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43bbc77387545ba09e9344ea3f5f25880513126135730578be5db6192a098d6. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USDY41714605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb1d7074da935d075d44bb1a20b984f5f3bd953704893ef21eed4f2239035f7. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USDY41714606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04125f4c7d50243177fd5b6886c6b13038b240bebd13bb56428d0a6d59886526. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USHM91786616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeff4b3e50dae3f2d26483d885c646927511bb479bdf07081dcef2d66db4c333. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/USHM91786617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2c6a8664c1d9d8a33f346cb80a740f85f48d0ed0613ce16bcaa327ed57cf88. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T23:02:55Z), 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/USHM91786618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455f19a81a91d69c7d8442cc3ff1437337e935912677101346ba714093fc1f59. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/USHM91786619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4388260717426eca0a0051b63272e79db7d47e9831126dc79fe4d57dda1260. 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/USHM91786620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a4a480c772312f044eb60d0019e7ffcd25848922dc30c970f04b48d6730e84. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USHM91786621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726f209fc57eea7b1ffc0d8c750517ad050a9dfcdd4b9869dd8a7c83ca53ac09. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:06:36Z), 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/USDY42214979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4831f7fc7dd851e6d9cd5e7e8c3246fbdc554fc2c75bffba98681de6fbecc665. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USL4R2242181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc3e2c87f9a7963d8c5b1a4c0acc43d990bd35566f99de8bbe0d7e2b7301c8a. 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/USL4R2443523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f7ce8e8c1b99c5476e5a38d1edeb8de6a73a96b73a7800a35a80523d5f89b6. 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/USX9P2410178.