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 0xad8478190da17189b6051707f45c8930c5e536a3a3f2edb9999c3e9847536a89. 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/fcf7a123-9508-482f-9f46-e67de4114738.json and https://artists.proofprofile.net/proofs/artist/fcf7a123-9508-482f-9f46-e67de4114738.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 0x6a5ed67fac736089228d230ec7e11fb9b9de800c6ed97813ffb29f5901758ae9. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FRX202120133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172a3ba22702b59fab9c6ab99b75809b1e0197cb06c170914179c960141e2ed2. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/FRX202185227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8ebfeefd6d8dc3a54e14b8028f1369c4f70d111b6efa6498999957aa254f85. 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/FRX202197021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdabd5ea0024581c0184d6c5d9bf125eeed509a836b8db9b8141816223a99a710. 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/FRX202197019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc590b8005b96b3cefbb783bc51860029c8a8490c820db99163a266f497259c94. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/FRX282199175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802c2ee7e6e25fb21042189f4cf177939d35225a6a70a1d93063982e4a7c69f6. 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/FR96X2200122.
Ladliya Waru Roya Bena Bachpan Ti Waru Roya
Pani Gaje Gud Gud Khodri Chali Khul Khul
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0a2d1c1bccd80b708c9cdaafc6f545cfa5b8d277ff88a2468a4e556731ebdf. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/INA3W2300385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6014e4acebd8f76f96bdb01791647b1844e1e7aec04a1168af6b6d237a98788. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/DGA0R2339787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6299a23fe67524d3625bd3364ce529d2e73681c10d29e2afb36d037522eb50e. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/FRX202453894.
Mele Ma Kari Kadiya Ma Kha Rode Dhaliya Ma
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7097e2546cc242bdf0badb23e8984510a6e62ec62cc972419a71fee3a6d4df. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/FRX282451315.
Cham Cham Ghugriya Baje B Mara Payema Janu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68622597abdae19a5b6fb0006323ee9a7048ecbdf9ab69829f9fb98796490fe. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/DGA092406235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa78d741940f0b77b2496dbcaa1ac9a6737bea29b6c7a9d7e764889b15fb95919. 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/DGA0M2405950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69dab54b3df47acd09b04f0a508740ef1882da9fe21c8138ba301867f5de056. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR10S2504284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd759ca1ea9a99dc47d67d28bf8310c63c5ccca5ec49db144354914f5cc347f8b. 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/FR2X42554596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f8f8019d63134113c4a2419e51b664e480a5ab96944022458fea3e9423f9c1. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/FRX452525037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade17c47196f0baa1fe3b8e53019be5d3849a4cf62f20d7db4a2a5f60dc8ce6b. 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/DGA052572195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c011eaa6c326b6f67f7d2125e2ae6b2b98eb22bc6b78b9e8cf628618d913104. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/DGA062501722.