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 0xd0a6b3f533d3b27f23a14a54f4fdb893225dd00dcdd6dab8ab936865f6c61af5. 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/f2fe43f6-e449-4e6a-af70-07aa9ba596f6.json and https://artists.proofprofile.net/proofs/artist/f2fe43f6-e449-4e6a-af70-07aa9ba596f6.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 0x65609ebb856cf608c6ac863074b4c5de24ad1c8b88c247ac86e89d7d80a459f9. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:22:13Z), 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/PLF242108437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59db3d09b5c67355fe57e19342106f3ec9b63c833aa1ecefdebde775d97e55c9. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/PLF242208808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7652d792721024f99725af557640979afba416e4f93cdaf2423e01d8d04fe55c. 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/PLF242209685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773a38f702e21d818fa2977097d999b91a7ba49a7cf34f1d5de2048121fc8c0a. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/PLF242209782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc659f7aeb93fae7b0514d5fe1ee72bd4a558fc15bf3e1f463895d59715c7b3d1. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/PLF242210081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30f58ce6cfc74674ca32f9ba16d93261594dff1c9ec3f19cdef4fa186348832. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T08:04:06Z), 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/PLF242210280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b458822671245c54f2bc9d82c9b9c3bffe1396a86f23977c424b5588dabdeb. 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/PLF242210822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4af3055052e906a42501b5ea4c0031b642d33211a1c23a17f1bc0c1a90c2fe. 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/PLF242210703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8146b94084647bf7e9d5f4dfb6b77a9f9a43040cccc099b6630f1f1d60a2a88. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/PLF242210440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350890f5d165a757a42e671a1c16d18fa27ec4bff5a8850c1147f11c37acc601. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/PLF242210823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0c7b63317fa28ded78d9b79c9c2b1118b416998a7c9f9bdf3f74649de1a0c0. 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/PLF242210738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef805548024989e95e4498f9ccde0611a7b53b30fee79372d47d8ab089253fc. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:19:28Z), 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/PLF242210824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db93fe402568871a9dd49a5cca27a0ab59651fb0d1cfce831fd093fa841568f. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/PLF242210825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddaf60511781adb5753b0a0ff607ae8fd68b52f0af49bf0fb64f873028ba4b99. 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/PLF242210793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10d9d405d4c2157f97f0a1a14a486437bf3c7466c3df50405c2073da3778227. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/PLF242210826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6871d2fede6a05ffa13a3dc452c7b7c67805516df4ba70b8e2b6d890b8968ab0. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:03:59Z), 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/PLF242211303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a0d38734f6d35cb36efa0e63e968081638dc6a388d0d7b71d5a487f33434446. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/PLF242412437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526bd646f165bb305be00e6a2e8419d47444cd2b68aa7c549f1a569e545f695f. 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/PLF242413522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7a03e34f82172aaabf1b248158f7b7259657924ce9b535e838285ee4dca979. Chain 2 (Bitcoin): anchored in block 957596 (2026-07-11T18:43:56Z), 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/PLF242514297.