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 0xf4e653b4f736729e8442f1302aad63634e3dfa8a69bc70ec638eab031981c590. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/17097abb-e816-431c-a831-0d6ce5493b94.json and https://artists.proofprofile.net/proofs/artist/17097abb-e816-431c-a831-0d6ce5493b94.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 0xd765965dcb2880f373927bcf12a456d359b2016442cfe8c0ca096fcf8a22b000. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/TCAHD2306616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac99ffa8d1b817a9fc4193ba0d9ac15576b4daffd9d2dcba011550a1d98b4aa. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TCAHD2306618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ec19affe1001902e082e89a666b51154068e6fbb056182d87fcad02526a3af. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/TCAHD2306628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba752a41ca87401f5f08b84f28c3f7fb4bac24de2d5c1325a01070e4f373384. 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/TCAHD2306638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07c4d4445b8c86c170b6e6bc18826e81a512d9bec4eb5e115bda6bf7a2d7769. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/TCAHD2306641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4fd36c166018da5353fba2fd58333f43a4b5237eb3927e8e2eea7a5380bf6f. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TCAHD2306653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809d0f2617b088dee5f25e4786d620469b170e2ccd9b05fcff3a58e854b715a9. 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/TCAHD2306656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8868f753a7cebd0e228873a54649ed534e3f017e98c3de68bf10efb849154c9f. 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/TCAHD2306665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9438744f6176628a70df37138e9b46021d7adcb072fdc4707ce5bbfb5a3d39af. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/TCAHD2306668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3a7b1562bd6628aa2351eeb705293f7a61d2e0425a97ced35ce839b2cc7f10. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TCAHD2306670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c94c9b0165304ebedddad5a6f8dd15b60edcefbbcd5f6bb4afde9d532f2222. 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/TCAHE2309215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb757e81bf3721a5cb0937eb7297ef4fcb73b798ddd02699bc88d29df18a1f185. 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/TCAHE2309142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ccf37a397e2a25ebeee2a73829bdb042eff86a691a8fbed56a628473d743826. 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/TCAHE2309329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba75c31b7c13a6ca61c77bee0597a59174720ae33b6a572236cd6ae923c7d873. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCAHF2399587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73b3597f4fb936a1c1ed1ec07d816652cfbdb122fdf128ea0af07c60341ce04. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/TCAHF2399593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7dca4fe20821b7c38e07375f61b24acc43de64713afba49d02a95726100613. 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/TCAHF2399597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e5114c50d8b85d863044fdd05a3b849f53c3d6460549c5add67bd62a02122c. 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/TCAHF2399602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b0d9a2483513127f0a81116f9dbaabfaf06b9002fada359f05bc348caf06c6. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:35:01Z), 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/TCAHF2399614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc042d690d457f3579e60f48dd9e07c6fd10e5861a29c5c32269882dd288be81e. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/TCAHF2399616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9316c47a60ef23d2440797bd2e5f9ac88b9aa894fc19bf127d97d609bf6c4e01. 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/TCAHF2399620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7fee238f2aebaf483f5ca4d97826132587dcccea93c6d55a86eb70b281e003a. 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/TCAHF2399628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de6b280d04a5f88a354c9bf0dc9616272adfe3b7429dcac2dc3f4da5e190e85. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/TCAHF2399631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77703e4f21b89c16eb04cf835f151e7b0c7122ebbe23c57f762d2a54be2b1d03. 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/TCAHF2399635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c825569ac7eb19d08aca4fa0f1af9b8c9b50ec8aed9374e77b860d99cdaefc. 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/TCAHF2399643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4335539f3bc1fc87fb736914d83addc299b03e6eb5cd89a9fa63403f45395e8a. 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/TCAHF2399646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96cfa3ff6bd0ea33677f7fa5116a3f8f4453c662eb365ad9be0e031904bb049. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/TCAHF2399648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010b176ffa718ceb3321a4a031d2f5d23753b79bade4d9249a14dcbc2adb02c2. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCAHF2399650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67e3b8c0d0679b3864d6f90cf7208ab3fece88c09d0f776495606ad51259332. 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/TCAHF2399652.