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 0xb7d44947ea32dba5d0d47b26f9ffad36894fab00a05e378913c920a7c3d6a996. 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/44acce38-46a9-468c-99c1-8c07b045037b.json and https://artists.proofprofile.net/proofs/artist/44acce38-46a9-468c-99c1-8c07b045037b.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 0xc27d3cdb9f2809bb0b22f46e0adbc767dc3a630f3b400c635da2364558f1377f. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/SE6I32065450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac287166c86595e39836381971887e2b9cd04546a7db87ed0cbcca8a2eb8b389. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/SE6I32065596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c27ff32c3bb220d3bea77147399f294bf7888a4daa28dec07d284ae8d10506b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SE6I32065875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94cea43475f5a539b6ebc8588a8da96dfc5e6436866cc22bac57156bcbfe7093. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/SE6I32065962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a928c3ae0123345c84aec7a5513935072153276dd5e89ec62de980310b6b69f. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/SE5752246365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3181ffce920a2b8bb373a4652d2018f8d0bcd06b7b4668dd8b78e70ea3f7a1cb. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/SE5752246366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45907ad1b3dfe5029d3b2033ce8f2d9300be972c6ad415dcd6203055748a5938. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/SE5752246369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb57394c0bab586307372e33f41c4168f06ffe282a33ee9a855492294b674ae. 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/SE6XY2294594.
Da Escuridão pra Luz (Instrumental Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa934a76c51bac41be65714397c1d81a0bdd33143a77fe1ee9db3667e3274a19a. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/SE66N2221376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b2ea9c38cc668c384518362be456b5c4b447c526ba727a4b8d0e5ac3726b00. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/SE5BU2340254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13568a25c91772b8bfe647895549dc65c17c1051b977f71472847f38c6a7bce. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/SE6TI2362454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc546d75e02fdd17a3a96e993d3346067d7be6fd0aff201cb1a6c2c7cbc09cd0c. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/SE62M2338120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654721cc40b319bbbac7391e088398cd05f3cd0160ece3921053f7715f2f75af. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SE6HN2429700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e98f288a1bc25480a8bbd40479db054907771e178bedf1289848a8bf5f36412. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/SE6HN2446435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf419bed2cd6e297af7c9a60ddb1b195b89904a70299ab846517d2cd820fce8. 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/SE6SA2432339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a68f7f426be03e6a0cbedf0c32e99f0d628da6c516baaeccc3a541b3647d75. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/SE6SA2432342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db15dfba8e7e13e98c3e7e467e72b41e589c8ce7e23cd795aea56852489303e. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/SE6SA2432346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899859d357733c9c61e0c17958c38189c8870a8cd9656249e5f7d189fe89c6db. 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/SE6SA2432347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771d8546b450ee60ede9cd638a2712c8cb5279a4590361eabac3cc504a00cc1d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/SE6SA2432262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f02cf61dc2d8f10de0eadff26dd832658da6c8c3172b4ce49adc94c1b1e3bd. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/SE6XY2506255.