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 0x5f725dc673c3c13bd6d8643c5b6ba5db189dd3730fe8f7c6d2ac348b20d350b2. 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/bb10a8fd-57ca-4704-8550-d41a5530aeb5.json and https://artists.proofprofile.net/proofs/artist/bb10a8fd-57ca-4704-8550-d41a5530aeb5.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 0x9ba46fc750beead89826bfec76e600eed1945e79878c0276d9e84e7da56a2cca. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/FRX872226163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c379973a1aa9790edc5281758572db7d6451dd293c14ba798c400b88b64386. 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/FRX202338121.
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 0x9c2a4cc6084a03eeb8a1f4bfa8aa4ec094f36a1e1a81ba3245cfbe74580a8ae9. 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/FRX282435759.
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 0x962f56444f6e436b806bb75fdf43b3d670c2a5003bdabab42762580699ae0f33. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/IND292501078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf96b5ee277383192fff2a700aeaa0764e9fe38a009892e955a03dfa8b0e79c1. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USCGH2247546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed96cfddfd123bd0e1e9d7cf5359200c2fe04cb80a2294031c277f55d8dc651. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRX452266250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab807f96386f037b18a3f911a1afddef8021d3454ac2dad91cc632aecdaece3f. 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/CHF032406220.