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 0xeb58619cc80e5d4aaa89061493f78920e3eacff2b7aeb7eadda5233dfbc2a3a9. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b1a68037-51ef-4e42-860f-74e6eb4bf64b.json and https://artists.proofprofile.net/proofs/artist/b1a68037-51ef-4e42-860f-74e6eb4bf64b.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 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 0xc47e083c107d1082f1f52cd01f3bf0b95a5be2e5b5a4e4cd0d86e4ad9c0b36ba. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/QMDA62389224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9f4176ccc0cfef794c636141ebb19a1a21981be9a7e2301d5d5fba484c933b. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/DGA0P2360594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09d3961723ff106a2fba4635df39b2fe89d55451cd25edbd4338afb964ee74a. 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/CHF032508022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332dbacdf738c1bd155cc06eb14e90fd718df7736f643ef41d6873e68bacfbe8. 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/QM4TW2585432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8612fa6703a6ad362654c65dde475c224fd2ffdb39fc23370cdd8c72cd6e77f. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DGA092440256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef62867eeb1ac58d53c5f8f37cc85b2e4d41f6dec8b41ec41ff7370ac8af426. 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/SE5752433568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71bb2b398bc1052a237b5802798fff9f93eef68468db0236247a9bff22e61f9. 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/FR59R2419800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9ac1e56f772e06588a0b0713f687eb11be435bfbd4dc40e68d37abd681e6e6. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/CHF032407171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7892f83de177b4a9548f539d6887745522c80235095896e130e1971b477ca605. 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/DGA0M2331808.