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 0xe211db62fbccfe3a81c8a3b200298cfb4b59a69f9b3a322d58616b186f553172. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9f30750a-9f0e-48ce-9a9d-c2c05249aed2.json and https://artists.proofprofile.net/proofs/artist/9f30750a-9f0e-48ce-9a9d-c2c05249aed2.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 0x0be2b5d6e9d0f53ea8f3e69f609e128929a638a41b09c211bab64a30a8068083. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/QZWFN2462509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bda4e2ede1beae6f23d8b3c77f9dce78d4a4a39e8319326e84f67c69ea68672. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZWFN2462511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedcbbe0f9c7e70591acdd1fd6ade2edb95299c56325ad3d27251ec86e074e9d5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZWFN2462513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60927fe7982c072ff0ddc413cb7c35c22dd01e92945094abd0dcc668fdceff10. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZWFN2462514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3969c4594eb748d931a8002b4335a0b112a0a8eaadeaf63c22b37fad872d61fc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZWFN2462517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadfe8ca411d5edaaa1716fa2777ef2b26dfc7748c0befd9102bd637655d11816. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZWFN2462518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407107e46c22a617bb7f17c9d2c451d81392507980e6937c31efb3c2c580265c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NL8RL2444364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc232a9218d68d00c2d519ce735ac08679c9c0fee7e3562e6c69c224a35484d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZPEW2406460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d5c2f84385dbb3ee6b1b08000883c00b302064540b6e63a6f25f37bef86a59. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US92U1908314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18eb3a76245cdab623aadc258d5980126d07409e66ec03d8ab2f4feafce7a1a1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US6682200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2478ecd9dd885e54250557f7792ef51c82199c793d43a3b0f52a7e8f5d360e06. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US6682200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1f922d69a5c217cfdffee9f0996eb894611cdf9ba32b128cf53321ae24f8af. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US92U2402188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390b83970bbb44612143ffdb6f5ae0b8a8b1c8ad6d72908844bdb1dc0161b05a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US92U2400948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64859a4b1bc7812ffaa51d59f269edb8ae78b3d6c7241ce5a0a93374d9402290. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/US92U2400949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c870f3a1a89a418262ccad6a867b6aabb8be649954c73e5d6baf4ce39838f8. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/US92U2400950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d964c0599013a3cc9610c4b766383dfef2edebbce7d58616af5cc64ad044b5. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/US92U2400951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64859a4b1bc7812ffaa51d59f269edb8ae78b3d6c7241ce5a0a93374d9402290. 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/US92U2400949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b946b712f7eb8abf848313ec8a88b8edcd50332a75559aed8321958551ebfd. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T13:46:32Z), 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/USANG2491219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab575ad1ba2d0b18b04265328b4d1209342b8b7aa56850fc9b46594ab689322. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM3DF2248679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67472ddbbf4749344142637f88b262dd9f7ec4a5a0adfd350362dde946951d4e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM3DF2248670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a8cb97a4f3266fba6f97659da1198a352b3dfa1a55b068fb81b1477e5fe91c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZMEV2173319.