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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560ade6013e84904bfd844bcad247d9d2dd30222a1a7259166c830dc219ea49b. Chain 2 (Bitcoin): anchored in block 953968 (2026-06-16T16:01:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/29e2b3e0-6862-47d3-a5b1-994b321667e2.json and https://artists.proofprofile.net/proofs/artist/29e2b3e0-6862-47d3-a5b1-994b321667e2.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dec5e1160b164e8f6ceabf24437e6afe0dbd57d67a9c3d43bd84b1fb3e65a19. 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/NLRD52327218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9494e81e82ecfb2c910a380e23a31c6a0a4670556a8c96af587ead9a7c71376f. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NLRD52327219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85e777dde0de989aeaceabd00bb6a6296b5b64ea4e8710326f6ccd248dec53e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/NLRD52327220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03202fc1468051f43f443bd9abef220510be8fc19060bf17d9dbfead5e51004c. 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/NLRD52327221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b3c79c93098fb009fcce66ca789b355f9c8a939dd9f0c5a15cf36e427b8dd1. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/NLRD52327223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd3eae80b9a69233328711ab04e9949d04455a8f8373e982318ee54a20a6c61f. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/NLRD52327228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456c1de8ba52d0bc16a27d93aa67a2fda691087d9e455fa5a2b9eb50e72c4e58. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/NLRD52327226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53b1b27f0cf795a81e7ddb72d3f24c6457338955ba984ce4b90cf8b1bbf8186. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZFYZ2467173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2374495048627f3b8b9ed27f41179b547445394b31ee3a771f93ec3ff0975d3a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/IND292218649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93940d8cdfa14688b52e0c38c3e8c159abec6f1fe2dd04923c8d3162d12474ef. 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/IND292218650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50fb60aaacf7d34de98f92a3b60938ffd770cc54948919fd9e904cfdb810009f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/IND292218651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd64ac4f097820d4fb8500b428352a31c56fc53735c823147327a148c885e1b0. 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/IND292218652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb2b78599405b65bf7f712ce32b7032db6ea41bcf67cfdf67350d923f18ddb4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/IND292218653.
Tandrusti - Posse Cut (feat. VYUNG, Inferno, Jeevant, Pratham Mishra, D33P)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x321eac01248ce2f608ad9e69e860fe005d757f048ef94bc8ef329ce1c76cc7e2. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/IND292218654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f7140a4efaabfa744a996afae4e3a890d3f5bc9ee5c5da87745c1a5ea71860. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/IND292218655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e1ee0850f74f9336b5392b3bc69fec429d052243404b66280cb62b800b3a15. 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/IND292218656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c94d792f760a2037f77742e7ccbb469669fa4b5f41c432600525e46e39b5b1. Chain 2 (Bitcoin): anchored in block 960230 (2026-07-30T08:32:18Z), 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/QZNWR2499425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e940103f8fba03b24b4b66848eba05615932c47c7cc6805066a04b92d4e554b. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZNWR2499427.