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 0x22c88d20d000ee87900200dbee4f153a67778c35ccb0a8239875f9d11699234c. 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/036b3be8-7dd1-4de0-a702-bf42cf3dc32b.json and https://artists.proofprofile.net/proofs/artist/036b3be8-7dd1-4de0-a702-bf42cf3dc32b.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 0x44591cbb1669c1e7c1d6fef7d3d7f2484d9a5989dd960ad5327c07ac33fd8cfc. 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/QMFMG1539356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa825380092de67d7cbe366d5c2b2cf42c362a30b147f79a0531afb03e7ef1e14. 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/FR9DZ1800872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580c04c1a5a858669dd5853e431f9b4ea858c8be607b407fc157fb99dda8ba34. 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/QM4TX1989312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88277f057368d43f36fa1b3022379dbd0adaddb172227a04ddd3db2d4c9fbe7d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QM4TX1989307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8685de08e2128dd971b6f0992cec76fe1bebf6e5c702880f4d70fa0be8922ca8. 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/QM4TX1989308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81296bb13ff4ecd7cb858be28ad7d18a9217f976fa679da2147ca2d61adfb79. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/ZA56E2002279.
On A Alors Yahh! (feat. NJR, B2B, DJ Ibi, Mp La Pensée, John Diezel & Laguiotine)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d18e11639b50dc5e302d608994eedfbda2b7ddbc1e610beb7850ba38e5ba976. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/FR96X2194304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7333da32f872eb443ffae91b31437db50687ece23efccefd53110f1ad09fe279. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DGA0H2318883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b426e919f724bf3b9ce3f220a6891418ac6d273f138605666bddf35f7f7f518. 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/FR96X2414177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c21dc833d8f469e2a7673393eed5759b53537ef5ea090cb851973b0fbc431bb. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:32:07Z), 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/FR96X2414178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e493391518ad61693f67fac9867c686a47545d1636410c2decab229879c7bea. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR96X2414179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5982f33899242d0a2a4a571df766c8569b824d366b3c96b58e3b6a9ec1ed54e5. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/FR96X2414180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7cb4233596dbede0a30af66c60e5a1aa35eca0e467fe994c794e72a31b3cf3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QM6MZ2524053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca18e8e7ee3acc8085f5587ea9438f8b5acd62d43a2b2e0a6b89af081dc2102. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:58:26Z), 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/QM4TX2564362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa42f6fb35252a576aff08da8da5dbb10ea0998d8491572133f4131105a4eeb. 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/QM4TX2564363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf7cbe65d592f0d6e89daf270a02f4dbface767434038af70899a964090fa7f. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QM4TX2564365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d94dda52f87f0a3f4e56261af19ce53dbfa52894078d853a3f8763344d7ad8. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QM4TX2564364.