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 0xfbd566aab467fa74f1c0dfa70500a051049562ecf4c1b46a2e5940115b622de6. 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/157f16da-3e3c-455a-a426-20a71b2e3c6a.json and https://artists.proofprofile.net/proofs/artist/157f16da-3e3c-455a-a426-20a71b2e3c6a.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 0xed7c4681a216522fcdcca22eb1ebe78b7919e2d11a95020cb9e844b30f9af584. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/TCAAR1043506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bfc096f9f309a3356d1d34d6647bbccd9bd63cc78b6ec418f278a8b83d56012. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/TCAAR1043703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f2d414989df66b4395c50e2cb3f723cbb5683ee38781f935160bf84ec746fe. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/TCAAR1043507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4de53c39f1cbb7a36b440ffd58148f2b973208d0581b853e6fa1c207b0d0023. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:45:20Z), 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/TCAAR1043510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58d052bee4e5bfe83d6f8088f2b9b1af4dc4b373f159a3c89d284b616385ff3. 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/TCAAR1043512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34363652e8953d2d420512714873cacf1770be679fd7327f4c587abf890518fe. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAAT1009463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5909b8917b29f4cf73b60ca7378b0456e7d6266de5a276b39319b7c2a7303a4. 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/TCAAT1009469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a17524b4ca791a73ea0284b05bb485a86c4107ad516939b253445a90375d7fb. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/TCABA1128166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93bb62c897db2c96382cfd19a0da30879d722aa872935208554b0d746ed62259. 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/TCABA1128182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a0d550ba815d13a5b96e8eb6819dc0bd84dc0ce9f96a678efea06bcaaad4e0. 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/TCABA1128186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32a3d210f7d7ff0bc363e4bbd12abccbcb5e6cc2810318067fbb592768b691d. 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/TCAAY1182298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e9e4561f49af34227272c295d5a1725a01543e98c01efa9c79add155787561. 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/TCAAY1182312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971a5f14cd7a5aa0629dcff5c36ec68da8635f1a5a641c3a4160315adc7ccf56. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:47:35Z), 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/TCAAY1182317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2ed2716ba6e6547b24917048500d66dbd2259beaf28ff2b29e76b2fc0456bb. 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/TCABA1128203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413ac3e1d6e83c0326d8f5fea9287885b954cf6d6dbf7d4937346dd4a78b9ae6. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/GBBPP2059247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798eef456b63b1e8e1482a43dd2810efe8ff94920a85adb343a087ce2dabe6ab. 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/GBBPP2059248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4079fe52f4e46ddd9d04d88096f6f191ce5640dbfb18cfef607d7d11bb433db1. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:21:05Z), 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/GBBPP2059250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f32395d48ed855d49980658341804554eff1b5695764afd9da0e9d4c2f8331. 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/GBBPP2059251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecf71b8f14925f2070177793d1b8c0ca038a040271b0e1f163958e88428c89d. 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/GBBPP2059252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a82da4b2663fe439d186a60101ad206dcef56e196e4cad65015c02a90d847d. 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/GBBPP2059254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x073a22147899fd1c3da196e5131fc85e9b9ed4a181513afa6c4251b6e4f8a8fe. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:10:53Z), 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/GBBPP2059255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3346936e0ce6c978f82608b2220c010c34aee938a5842ce921bb3ce8b772c1db. 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/GBBPP2059256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d001a8200d8326bee4fe559d770f53d5b8e1f3363167d34c28c1932b6efbefa. 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/GBBPP2059257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581141b9ae88b0b03bb260cd921377de1ec36759e4476fd6ba2a8f6455c3c718. 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/GBBPP2059258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3b731834d0f978cabd347e98df17e69249848b58fc500a5be76b6355706148. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GBBPP2059259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe976c7be228dfb8e19bec382b57d939e21f41b9dbf404bdb28626108a6b16759. 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/GBBPP2059260.