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 0x80801a46de4d33de96585beb9a16a21df89de390da73dba9de1ed1214be878bd. 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/f4599065-08f9-46f5-aab2-d6a4168da44b.json and https://artists.proofprofile.net/proofs/artist/f4599065-08f9-46f5-aab2-d6a4168da44b.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 0xbedbbe68803cd57d1c3df66b5b32bb62dd72c6696dd616b864704ef477763236. 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/BRUM71001891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x887524f1722f8402afa211c71bb8a7b85f30a8acf8bedb3d75baa67e0c848eec. 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/BRUM71001893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3d3c7b81c3c5d0d497dab06d987e323f045da5fe59fe74b9ab11ca58693a21. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRUM70900242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55fb5b20e944f689e50419d223385eb70acda726f7c9e952e7547bf4f493b7d0. 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/BRUM70900255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d82aa5ee60b19c84fc2ccf16bb34fa9ab7acbb1926f5b255a2a5b15497e96fc. 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/BRUM70900248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946f3f80c9d8cfe8ebc2eb38741f795db6eb086c87ed1c14e4d78e4c2bfd0b78. 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/BRUM70900249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57fe92637898a73ca92aaee12535cdacf27260ede0a0c5a231ef360b2365ee4. 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/BRUM70900250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd362fdf0d83d94b97a7822c44259d5ffe5807b87a5b805ba6d72ff734db2f196. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRUM70900253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6f67c6e50e92b4ddcf8d900c531f3605f434fc7cdd7cef07d7459b48b2515e. 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/BRUM70900252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2842177ba5743bc2e9a65d736167fde4a8a565400d9dfb7c162421ae08b6773c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRUM70900315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b468e42afb1932038839d48358148bf9566ca53bcb1c3c85a5a48b1e5000fb9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USDJ20500174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de0a1fa84a5d1fcc403b9a132ddeff35fb9d1ce4051183f405a460d919517d4. 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/USASN1202015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9346f20cd0efb9d1cc2d15cb7bad6c147373573cd4f4d5ede23ced0862f6a2d6. 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/USASN1202017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea887f22a1fa32272932654891b15275dc5301a3f4912f0e6d9a0d531b7e5e1. 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/USASN1201182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fccca41a79b521d2b536c72aaea5e4098461924ade40a63d81abce95b4a0c11. 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/USASN1202022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1eb8eaf4938c99100bae61b329629043c2605f98005b4d205ae95af5947179b. 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/USASN1202023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaad5a46e216af5a0674080aa82adf84032beaf17ef9de3fc7f56f458347eaf6. 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/USASN1202025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d87f4990ba2ab3b7a5b831511b406a0a349d9ea061c61b0a61e032ea13bbb3f. 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/BRBRG1300064.
a música que me faz sofrer agora, também me fez sofrer na infância