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 0x04649b4a3993593936fb14b7cf31dce8f9c1b59c8cc690ec41198337614803c1. 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/765ac19c-4c86-47fe-9340-f5c86c543173.json and https://artists.proofprofile.net/proofs/artist/765ac19c-4c86-47fe-9340-f5c86c543173.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Everything But You (feat. A7S) [COASTR. Remix]
Everything But You (feat. A7S) - COASTR. Remix
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 0x1ac535d65837683febbedd1146e3c67ffec7f308c82874438f9b87db9b476ad8. 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/GBAHS2200722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab18c8811fcb091f3d637af7a7eb971322d89291ec6459dec8e55b0a24662d9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USUYG1322691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106ea79d7b1d9d55fb3edfcae96d3d9cfc087176d5a2ea892632dc328217bf7f. 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/USAT22219583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ade5b605f7654db682eaea8128d07bc2df055e2c6aa990d380f4b9ce77ed43. 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/USAT22206818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2be249e111a6eeae80505bf4a407132e37ed21ada43231f25ad85c241bba033. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZHNC2463750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe893c467f96de0e22fab9e869c8ff39828cff8153d13a7b61773bcb7f9416215. 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/CAN112200914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d77c9aa7cdcda5ee8faf7f963395f8ead2e98cf3738fb7c39f12544666ec751. 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/QZJQ72200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6c100547ba648d847d3adc89b2bdf0c9ac962af717108f56a3debbc1331c13. 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/QZJQ72100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735f8485fb72fff85e581f312bab605113df59bda3c20e93cb9d2a2768fefc1c. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/GBKPL2149161.
Too Far Gone (Remixes) (feat. Anna Clendening)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f102febf09c2f861ed89490535abf1463ef82d329a329c3f4b9669c8534d4f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USRC11902054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a73036224a0089f1b34713ece46a5d2e8e38b9c131fe10af3c10fae3383bbc. 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/USAT22003258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8a0d5018b2670cc478f38e799a2d9a51ae6e2b2c72b674a8f642a9218e97e4. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/NOUM72100154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf97e99a72cdb8b0770a8073cb8184d517027e58ccf757563856277c029a39b. 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/QM24S1815659.
Wish You Were Here (feat. John K) - COASTR. Remix
Wish You Were Here (feat. John K) [COASTR. Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191686a04032934259f375ec1234e8b6f5ba849d959f55222ee90b3f64aa7e95. 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/QZUCN2200153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2be249e111a6eeae80505bf4a407132e37ed21ada43231f25ad85c241bba033. 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/QZHNC2463750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2be249e111a6eeae80505bf4a407132e37ed21ada43231f25ad85c241bba033. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/QZHNC2463750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe396eab85e8a86562707f57cf34014853d6e57a2a76c0fdf06cef2c9ed6d2b3b. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/USANG2249769.