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 0x74edbd06ccceef2bd224a381317d60cda4091364b3420257f052b8bc44a01fb8. 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/e46d7853-e7d3-4fed-aae8-4787060667b0.json and https://artists.proofprofile.net/proofs/artist/e46d7853-e7d3-4fed-aae8-4787060667b0.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 0x2549ee82ccbe8461c4d7ccddb8e08c5326fefa0c5afae3e3b272589c3f2a014a. 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/TCABZ1405699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27eec73e90c5d743d710e9b0ed23d6fd6ad21722a6b4e641a51610d8a2fa8f74. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/UKD571500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb377ecdb531e07b3097123ceda50085c99cbf9aa866f0774ae94d7d5aa2508a2. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/GBLQN1619501.
Aa Chakk Challa & Ishqan De Lekhe - Single
Ishqan De Lekhe - Aa Chak Challa (Cover Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7782fec98f74f1a9219cd4f4fd16a858334479af261e400a994b6092f9e0e5. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/INS181801274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26ea5f696b02833646193a01964eaf28f8334ee3b1720d5a31f0373288b9ca2. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/INS922000320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb564c0b27838a467201cbd67c9eaa199e3d7376499b17e9a973a185f961efb0f. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/FR10S2184276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde9f8e25da1fa7ec5d6b38dbd174a970fd08999c327d982e05473a7ed7b652a4. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/INS172101502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802a7b4d4ee091a375a7a7c7c9bac0b473f84973cdac7cc8ebddeda0b5be1dc4. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/INS172104231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b14b7450c0ef6ee819e0134fcd68e64298fdacbce029a9bc869dc1418a4a43. 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/INB720000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe056ddcd2b00d8dfe82cbeeebba29d27459652981f96b27cba6e50e9581a9e5f. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/INH102206337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5a8546f047a69e493cf2bee065c358995064f2ef7dccf95888fdcf8304642b. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/INB720000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e88950f4cd869a441112ef1551af79a8e7a0a7f7f897baa76d3e49bbd7bed6. 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/INS172300273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54abd922f592b28db94b221b219c3bd2e499fca6991551b76e557a83e66cc9c8. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/INS172307363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d8b80b5ff8a064da511ab0da5b6dbf05a0a61cdcd45c75f6e1d5079fc9887d. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/INS181702020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaff6281982fda8c0bdaf1660a2a82dac003ad956e5cb25ea6fc3d0786e6808e. 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/USUYG1498271.