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 0x269ec881152d0ccc0e54781495765318171c66822dd44ab0b610c52c85d0df32. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f7736b30-b834-497b-8f02-d0ba19e2b9d2.json and https://artists.proofprofile.net/proofs/artist/f7736b30-b834-497b-8f02-d0ba19e2b9d2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Reverso Beats Apresenta Rato Reverso Convida
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 0x4b8513cea54cd03f088bcabeced5fa5a5d49b234d2f4579bdf062b33ce333916. 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/BX3WU2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2183a1bff6a38a55265189073520f53d9874fedad889816d46b78b6b2ddcd5f8. 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/BXV7U2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e9959ae390beb1e09943c28195b53e8fe7ec7010a9750db442916a54d3f36b. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/BXV7U2200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2183a1bff6a38a55265189073520f53d9874fedad889816d46b78b6b2ddcd5f8. 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/BXV7U2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550340cf574e936fcea1004e2976b4ae63e99168be35b8c7ea53cce7f26abdaf. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/BXV7U2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38be12b06527d6fae9e574ebe1d0ff535b42551705ae4bae8a39c22969ca5dce. 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/BXV7U2200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9027fe90f1a1b78d91687660c4b65549bda8d9969b6f51e42c2b443efdf20cbc. 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/BXV7U2200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890dcc1d52d9df6cc18614d5b302bd477f27e10b87fae85bbdc03fca5fd68835. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BCSMQ2100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe344878e18db6fb9ead630940969310150558183fd466912e5ccf2e72e803c. 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/BXQG92100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c0b02ce69a49327e511044c43dddceab89b4aed0e28d500d192336356b4ee5. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/BCR022200038.