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 0x0f2a35f76ad6f25bf7f02d21e46e5d41701a410f98a155938fc66545e7fd486e. 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/77811ef4-03f9-4ab8-95e9-dd9510fa0938.json and https://artists.proofprofile.net/proofs/artist/77811ef4-03f9-4ab8-95e9-dd9510fa0938.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dil Kaise Thamula (Kumauoni Chitra Geet)
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 0x7400f6dcfeb6e073737f26627871c8b3da415ed83bd0c42e775cebf92436ab4b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/INS180705871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6928fe836cd3165f9dd530d947d2b6a574ec0e619387a6c9ec4da6f47e5dd4cc. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/INS180705872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a692bc4d48dd57bc828b690d7a55a1b30b092efae0524f4cc38d7d311821cc5. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/INS180705874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff16c7e353a1a8c3dc0ec25af6bc8a2c5d07ee1e1c16f83af629351c954bedea. 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/INS180705875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84df3c5ea98733d2c6e038e3c095eab756364014b2d996cb1333f4acfa9da7b. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/INS180705877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce809335b9da8dc3c512e0058059bc04d37c5d1e33f060c47e85dfb5646775f8. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/INS181100387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebda11b4c104377d79db9149c79eb41e3d49cd1b69d3f775eea8f6d2ea97d8f. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/INS181100391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14846669a650d45448ff7e63eaaaaa1ae250a52718e76b2efd835019e9849501. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/INS181100393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d851a51e306ec534af4634abe295dc732d8a4a84e2c0943be4409fe0d75db7. 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/INS181100378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c5348019dc25e3825d3bb02c6d78c242104ca61e8fded5dbb9192a189a1d96. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/INS181100381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d52403690bef4ec3cd64f5ce779b5ed60efddf9efdd041d5480236f49e8fea9. 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/INS181100382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119012bd43cb8039aad3a861128d0688e1976767101ab70e938c1ffa31e02044. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/INS7A1634530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcf99dabcfd992fc1d39ddf384b3025a62ed6054f620327f3ec72b5ea804033. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/INS7A2167076.
Jab Jali Baryaat Sarjuk Gharma (Kumauni)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e234e56868b2a64f7abfa79959cc99f6759e7c71a39b064fee101596b8f8873. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/INS7A2182989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721efbe6061e0095e128ddf80f38092df1ac59a07738586719191f66068aabee. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T21:24:46Z), 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/DGA052597613.