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 0x65e8f09d8a3994d41f9498595847c4a80f257c051ceb824f4f412f37509d7cba. 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/3b801cfb-6d49-474a-93cc-757682223e43.json and https://artists.proofprofile.net/proofs/artist/3b801cfb-6d49-474a-93cc-757682223e43.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 0xdccd70cff48960dbcdf0998fdd74f22d1f67f6e15c3eb75825d03b82ceafd935. 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/TCAGU2312199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd618a69e8118e4c0e74c668832ce4ceeebfffd8622e00194d6a9d8450bdec9b3. 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/TCAGU2312359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe70d4435b1679382877c5e1bd6445675997e28ca26f1f59456f512830f9f73f. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/FRX872270389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe732ae8cedd75c051d31ce3d2e310a21208845f107b27a7fa05ce31f083748a7. 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/TCAHB2391497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3342019b057cc66118438b4a83a762af1406d835f055b71b94420cc0e6179ca7. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/TCAHR2337189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9281b3564ec0d602fe7eb47bf37e45d6f932a26586407bbf37db8c29ad115104. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/TCAHU2417161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3a0568cfaf27bc793216dd19131e893e17656ba056d53cc85eea7b7c5f251a. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-17T00:00:17Z), 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/TCAHW2440432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c2229bd4a9a391e15827e3f5d3c9afcd072100cfd6936fa9a0eff4452b57ee. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ROBRA2402038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcae3f294c4c0c6f8bdd1a23b8949d70b2e6e79b8d5c76e570a5af1bd8335252. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:47:34Z), 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/TCAIH2403896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe320ad01fc0c9e220bc9a835a50e7610c122629973fd4a1d572a9f5386293b10. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:56:44Z), 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/TCAIJ2435889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd12021a7b34a71fc1fb7b5580529da61ec5051f88d303525beaf39c65c59518. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAIL2438676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6486984e8dd171d6595cd4ed884159f775a1cce609eaf4ea90dde6f31581226a. 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/DGA092476314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83b23805d194d2ee1641e168e832e1c5a346927546232f99ee8f1d24462d173. 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/TCAJE2427762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaffc3d53e298b572da2793b2736a8bb8ac45637667e4db54aec7116100ea4fda. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/TCAJE2506353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30c138e0d6bdf3049c3931c362f5f88e24a4966fcf833b3d7373003796729ff. 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/TCAJG2584082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9cfc569f755dd65b394a7ced3c0c66254d09681d0eda13d2647589d7aaea31a. 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/TCAJK2542843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f72115b31e78f3aabf6b353a7e04eb884318774e5b60b0fb39d6db972258ef. 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/ROBRA2502834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d2e8fd2e87f3a7682221da24be4248027fa12a961925c78905a46845c6d8a6. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/ROBRA2503800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc519a2d0dcf20c8f88060f138d9ffd449505e9c505f972352053dff33258784e. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT65Y2538757.