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 0xb0db91ef93291159fb5ef32db7b3210172474b48b60365fa7588d7d2c5434aef. 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/11fabfa6-47a3-409a-a49e-57229fb3c736.json and https://artists.proofprofile.net/proofs/artist/11fabfa6-47a3-409a-a49e-57229fb3c736.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nazar Hati Sautin Pati (feat. Aditya Giri, Mahima Singh)
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 0x0a55c65d299ab6582f6358c06bc8edebad1d0ddfbd01ea9be02feb569464ad3c. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/INL232301587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3e07e7435cc32fc6b8b88df1be7d1d86f1aca51767291f95997b3294fa5406. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/INT1S2300466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc909fea6de512e42b389990351535ea43f34b1a8b1286a79b5bad52d7a794aa. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:49:01Z), 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/INT1S2301098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6d174db816b1aec9751ae15cb482bb65dfe2137a37c9bd694361d0093a12cb. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/INGD42300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde71951b575bcecf784d0721421425456bc5148170c1d46947741743aa26bc0a. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:05:21Z), 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/INT1S2301124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad799a76bb52e58f8c76e70428e8e14296c73daabab9d5a36fb6fcee9a9843f0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/INL232400590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1dd18135d9c9c1cead8f2fafe17b83803b631be2acd6bff7bc234f55120643. 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/INGD42300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65db93d874cfdbe72890d780e544da9fd9a3f90335280899a9c4537ae411fb02. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-17T00:13:01Z), 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/TCAIB2435206.
Panch Soo Me Hoi Na Chhathi Mai Ke Pujai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459dc9491357bf3b214088dacd67f3c88b6df2e83b0bddc3c49ea4540fd44162. 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/INL232501573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db12f8e20d900f31acb052e500737e7d453064bcf3d28b0990b282853593c17. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/INL232300217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8fd53a36313fbe288473b0d95c9ea2e4cbb8bb5fd3e4bad7143ee30ed95762. 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/INL232401592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398723e1237fc98f8a1eda038b2c91d9d0ff441e4f6f15fdcc719c8a9ed1ceaf. 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/INL232302655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb661ab628acf69c57c4e7d09397b981563ef7a4f0d2d81c57691d1a7ffa7e5fa. 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/INL232302365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c6358509d173825ca88c533da53b33953f5f017f057d6bf3c18c33a4e7fd0e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/INL232300463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa841c7be93ba340552ce26fc46a0aa75750aec872a9786948feffe40f7e22a83. Chain 2 (Bitcoin): anchored in block 960177 (2026-07-30T00:21:01Z), 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/INL232302762.
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