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 0x87c6597c0efc9283f934572bcec3ba56b463cb16c78e53186e97ab648921d37b. 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/32884aaa-f6bb-4738-ae1c-55a9493dd269.json and https://artists.proofprofile.net/proofs/artist/32884aaa-f6bb-4738-ae1c-55a9493dd269.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 0x894eff279ba0a9c69c0bd6c0fb367be490b818cb38c63ae6ca69a20554171c6d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FRX202173067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9a576cc2a5ef1a714b338ba92a031d72fc931c5f6c66891d0301433c04f01f. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/TCAFW2141878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433b588ebaf84f89b465a3013762f5e5e3303d5399d11d1993613ec780e47cd9. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/INH102307039.
Hasta Hua Noorani Chehra - Qawwali Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2e0b932fffd4e4c48b2186aa02d16d014808df5cacef6fbed82fc410f8bc70. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/INH102411628.
Hasta Hua Noorani Chehra - Show Stopper Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b014b304b0a984116e135f8fa099f08f38a4fad675d26f983d0bf9f06b88c6. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/INH102411603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab69de5d6bf80700266c9c207987b17c2d7c4ae079563294b25c41286e9460e. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/INH102411866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f55e8e11ab39833ea8856ff2d007b5e710ed5e759be1f3ba31d61748d5f3178. 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/INH102301489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae03dbc344268032a4a33077717082992bee890588ae898d4fbd11fb6df770b. 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/FRX762244465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaafd9df89d0a5efd86ebe2f44af9791c1d76610eed6e9be7ab478bb25fe852ef. 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/DGA0R2307288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df0875efa088734f18e98670b40dd88025d0dff3367e3119a6dd82d2cd7f6c3. 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/INA1I2303674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf24a9601b2bf6998602d31ead3476b863ceafb4895e0f7875b209c7c579643. 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/INH102412270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe303636de512f81751ef2ac6fad86c5ef008e38a18f5eceea9f3fa97d150f0. 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/INA1I2410203.