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 0xa0f65a33a310651c979b4efe79e40c67bd8995abf7afb3982106b4e3b58b0f5f. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a93eae28-8415-4b96-b203-be933e119275.json and https://artists.proofprofile.net/proofs/artist/a93eae28-8415-4b96-b203-be933e119275.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Le 10 fiabe per bambini più belle di sempre
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 0xbc46ed7c8607e4569a67f51be3be2aa7b2860c58e7da6d3d0b827ade777d0b6b. 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/ITS040500364.
Il Pesciolino D'Oro - Brandeburg Concerto N. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7a08d6f4501e504da74eee366cc253abf3a0dfed23ae7751030e218f9fdbfd. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/ITS040001689.
Concerto Brandeburghese No. 2 in F Major, BWV 1047: I. Allegro
Bach: Concerti... Concerti Brandeburghesi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19deee0d146d84624801bdc65b4dad2370665cca0c797a72771267d379441073. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ITS049700018.
Concerto Brandeburghese No. 2 in F Major, BWV 1047: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d714ae65a7aa1249b3ce8c378c6952a051ab822509e37a5a2ccd870dddbaad. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/ITS049700019.
Concerto Brandeburghese No. 2 in F Major, BWV 1047: III. Allegro Assai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62986d8d89789211a3662a23c8d59a37cd3eaba5c6fe594107b44a48e4ed57c0. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ITS049700020.
Concerto Brandeburghese No. 4 in G Major, BWV 1049: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f81763fa85f01de12b76d675c3920a0f05f534f30036d5d0d5cf92f6100f847. 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/ITS049700021.
Concerto Brandeburghese No. 4 in G Major, BWV 1049: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5051b5ee082bcb43d5e2ccc3abc0a38077919e90e1b74ba38443dd8fae8cfe03. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/ITS049700022.