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 0x5aa0eac9628532acd81a5dcfa7053cbf9ef8feb077de256e9c9cfac58647af69. 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/9e2fafec-f57f-4edf-b557-dba7b4df705a.json and https://artists.proofprofile.net/proofs/artist/9e2fafec-f57f-4edf-b557-dba7b4df705a.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 0x1eafaf69d2cd77354ffa149fd22b59fc25c0c4ae46768154334a3b720370df51. 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/FR10S2103270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e76452661b67f6640f61b20f9a1a0073d51ecdac32c57c093787798288b8029. 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/DGA072173423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013632f2a9991a7fe6f8ab8d6d12ea68b0cacf148703f79ec31b3fc6d928f48e. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/FRX202153258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2ff7694c8bbb23203f1514bce82d3d11f030b8c7527e51a1cce64fedd04646. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/FRX872126418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e4db32d4398bd8216c54a78479f22c2a01d58055a03da4ce4360cceb8730ef. 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/QZNJV2300412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff66fabbb1265082fcad7d9b4e5bf198a96871a5a08a910745babb299b44a1c. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZFZ22319659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf998ed5e2538b2e21139e365cd70220532eb34b21192b451a5ad9f234aa4f49d. 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/QZGLS2439543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2abc8d7c19d1ffbaa2ce84c6e21a71f53f7023dfd23e0cfeb6e10c24ea7c25d9. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:09:43Z), 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/QZMZ92461794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc25d3bbd6e2d129f0bcc852cbb19b53c78b33f13ae9c8587d3f11e27d4a1f12. 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/QZW9K2424169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15dfd32dd43fd0ffe40f8577790f17d3734af47804f6cc4242a536740ab6d49f. 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/QZW9L2498307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12408a6641b5fbf17b0d371a834b211b1590d6d2438c37c06b26f44a17fb3a3. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:51:52Z), 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/QZW9L2498302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a7971c9fd24084616e680e2631f443cfb55c635aef2216741dca836b7cab16. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZW9L2498308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7bd329efde65b2e60ec39ef5458035b3a29f223b3574bc889503ced697bff8e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:42:32Z), 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/QZW9L2498303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e9478c0646fec9afee0ab409d1cc12305302d3265c7526365c3d41eeacd240. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:51:14Z), 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/QZW9L2480838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1058721c01ada8b208d8aa4e6a7787f8ac95eeee5a3cff9aa0d2ed90ed2c7ac. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:17:11Z), 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/QZW9L2498304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58bd21f0fac9275bb30a27710813849bbf56378b36304927eec352250867bc5. 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/QZW9L2498305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4599c7037902cb1147a859374c0a24b051c3356fb284a78c3c6c7f5a9acdea4d. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QZW9L2498306.