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 0x587b738c0e9844a01e065b626156d5454f51e13c18de7b39a4f24408b5103356. 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/d0dff2af-b361-47f9-9265-fe01f79c6f9e.json and https://artists.proofprofile.net/proofs/artist/d0dff2af-b361-47f9-9265-fe01f79c6f9e.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 0x5f8eb2845c6ba75e741bd3f77be4e225c3837a0e60b9d7d46725803abde6a406. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:32:53Z), 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/GBLFP2324365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8f2682cba2bc092578cb48c11556ca21a1ac24b6cdced183be5ea13c220907. 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/GBLFP2324374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf4335cdda5d0d0c0e9968eab5aa61f6a6db4b06c4221657f6dd58900332ca5. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/GBLFP2324366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c6fe73fbdf9effb9be570284662c6f9b79d12d2eac8a22cb3dbbcffbfb78e3. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/GBLFP2324375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1349fb7b2406e8c64c627a9464dd189ccd94a64ad2e2e46129309dcbe4cae4. 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/GBLFP2325697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c957183632e5d4db553f260cbf066f3e839a7ec227128052f072f563a45a1bd. 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/GBLFP2325700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2807c6ed19300d00970b33ca4e9d8d60ffa408e1110d966af6833381beb447d. 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/GBLFP2325698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54aed225328f7dc70717af7c6b65be4581753f9bf8b1147cff615f59b91c0b9. 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/GBLFP2325699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc953e4c38a3e62bc5de59b125404bb0c4ee4c85e834b18c8eee3d36cafa8849d. 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/GBLFP2329262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5482097012d98ece222583daa9dfbf2bb68ca9f55395faea6c6f24a1daaede7. 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/GBLFP2329259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3852f43cc23272ce09af5590e736c1856581450db211e1daf2f65e816155982. 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/GBLFP2329261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e522133833e2d1cbbe9cbc72494c111d9da9a297fcdadeb01bd4b947ed69d9d. 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/GBLFP2330273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91614cff81f4dcd579c47cae2dcb903a39da8dde07982801e740fc2f02dab200. 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/GBLFP2330274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fde953eef49cb1dbd72dffb94fd2a89696aa3a9b97f2ec33085ca350597aa25. 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/GBLFP2330272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ae55519b4774287e992f651985544a953b0b6c43f5bc03b201b55e19442009. 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/GBLFP2330285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb369d985d44be34fc31c2ff1f03a1d5429660e56289c56c6c27dd09091041ee7. 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/GBLFP2330283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf581906fa207a30cb9b1549dd880296d262a10c09bcc7e5e4847cd5f409c5447. 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/GBLFP2330282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9543d9f338fae0df267336dc52b9afd927642359147ea9ea186198b2c6ffb9. 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/GBLFP2330284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d359e6c14a05bc5aa04c86db91c41b8ff422212b25cd1692bceef2ae5e8fbf1. 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/GBLFP2332488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72bd6c6aefb45d6010d1cdac71302324dc7694aa09b0c38d80a9a57ee63db22. 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/GBLFP2332485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358662addeb00bbb83b7b8b80a191e0e09e751ddafa3ff43c372fa5d4dcdcaa9. 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/GBLFP2332486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ecd2762740d29bdcd080e5b138f38e267f00eadfd05c98960647c7720dcc933. 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/GBLFP2337455.