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 0xdce0d61dc1894b49e6c025661778bdb953ddf7759b18620c494ad0ea42ab986a. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6e0a6325-336e-42c7-b586-91a3fa2143e9.json and https://artists.proofprofile.net/proofs/artist/6e0a6325-336e-42c7-b586-91a3fa2143e9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Il Turco In Italia "Highlights" Act I: "Non si da follia maggiore" (Fiorilla)
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 0xb67feeaaff1767ac69f85dbf000a932517d27d54ac30dd3a4aad5aa11421f3bf. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/USSM10309261.
Tancredi - Act I - Tu che accendi questo core di tanti palpiti
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8da6c5572b59b76f489a8d571eae6aa720b6187e0d7abe2d10431c5a7ddee25. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:46:55Z), 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/USSM11206701.
Orquestra Simfònica de Barcelona i Nacional de Catalunya
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c36b7365a84208dbe174bfa63d0b63a07c2adbc7a5a6a767aded6b3fe81446. 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/ES5027400250.
Lucrezia Borgia - Act I - Com'è bello! Quale incanto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001295c707ddd1a83016075cb5d20213240990c406d809ef3a7709fb35f238ff. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:04:27Z), 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/USSM11206705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b2a97e98a393288cd5a6816215ed4c1a97cf35c7b498ec98d52c80b26eee5e. 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/ES5029100056.
Ode an die Freude (und andere berühmte Chöre)
Je n'aime pas Verdi, mais ça j'aime bien !
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f03a5ded15cd76a67837f3bfca38afe4f87a2544323a437459bbfc6fb28768. 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/USBC10000840.
La Traviata: Act II: Noi siamo zingarelle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5aadce8cab8242b8638a222711299d3d0d8554fece4c00ebf93c74cc7d8a297. 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/USBC16700114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9ba5e439e628442953ed136980671f06579a980f781e4f04afcbb11b3d3ddc. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:31:16Z), 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/FRV627400980.
Anna Moffo - The Complete RCA Recital Albums
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8c08defe3226a93537eaee9154bb3d6dcd3a7ce16ab014e8d37c5ee80d8671. 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/USBC10500788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d188c4b1d37cb0fc93a1a41824860ef20ccff95322f90dd5777e761136899c9. 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/USBC10500789.
Vesperae solennes de confessore, K. 339: Laudate Dominum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd590ee3ef01ac2f79a260eab8919df2172159025503accf0577147f851dd4033. 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/DEE478700017.
J'aime pas le classique mais ca j'aime bien
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd45ec5682efde82ae298b31671d4bee5e0f37cce2de0cdee3223a83feb67ce5. 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/DEP620101122.
Mandolin Concerto in C Major, RV 425: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe720a441591546ce5248542cea09ffd9184b976ed6ba7c4222c536916fcbec14. 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/GBARU9100056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa2e148c7e1071f3756bac94bfa539e88adc13a2f2fc4f3bc3e9619dfcbfdd3. 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/USBC15600102.
The Carnival of the Animals, R. 125: VII. Aquarium
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a0e83e1e90f8ef95bbadd7238a664712e94475234743b3883cd4d65ef314ce. 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/USBC16200139.
Je n'aime pas le classique, mais ça j'aime bien !
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd45ec5682efde82ae298b31671d4bee5e0f37cce2de0cdee3223a83feb67ce5. 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/DEP620101122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe720a441591546ce5248542cea09ffd9184b976ed6ba7c4222c536916fcbec14. 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/GBARU9100056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a0e83e1e90f8ef95bbadd7238a664712e94475234743b3883cd4d65ef314ce. 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/USBC16200139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa2e148c7e1071f3756bac94bfa539e88adc13a2f2fc4f3bc3e9619dfcbfdd3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USBC15600102.
Ich mag keine Klassik, aber das gefällt mir!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd45ec5682efde82ae298b31671d4bee5e0f37cce2de0cdee3223a83feb67ce5. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/DEP620101122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa2e148c7e1071f3756bac94bfa539e88adc13a2f2fc4f3bc3e9619dfcbfdd3. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USBC15600102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a0e83e1e90f8ef95bbadd7238a664712e94475234743b3883cd4d65ef314ce. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USBC16200139.
Les Plus Grands Airs De La Musique Classique
Time to Say Goodbye - Sarah's Intimate Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d0d0a2b7ebfaabc021bc22f9d1f11c4a850f4ef2880d53d7b8fc9245836371. 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/USNS10100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a139f7144eb64b92017b04746f34f3f2cbf3b77bd14a7e9e52e321a7ef2fb6. 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/DENW81900061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67be1d28b5585619bea6a2d166ea7f5caf7eb4158f7c48d3fa867a2f2702b897. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/UKCUZ2500028.
Je n'aime Pas l'opéra mais ça j'aime bien
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc734965ed8eb4738288859fe2faf074deeb45a261d87a94579fdff11c530c19a. 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/DEE477300035.
Johannespassion, BWV 245: Parte prima: Herr, unser Herrscher (No. 1 Chor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e84678b9d558bcf90fe83bb71dc04aca8229d4876dacc2eecf9d5c6657150fa. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T18:07:44Z), 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/DEE478800061.
Madama Butterfly (Remastered): Act II - Un bel dì
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75854f5467010b2b9a55c9875a092bb7fac97d202ff6f3b2927bedd582bac7ab. 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/USBC10600949.
Falstaff / Act 3: Tutto nel mondo è burla
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb4f6372393b5891faf169de161c0697cff8a7c6c209ff5ce8c192ffb1eb9f4. 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/GBF076340232.
Artists Of The Century: Montserrat Caballé
Nocturne: Klassik für ruhige Abendstunden
Ich mag keine Oper, aber das gefällt mir!
Masterpieces Presents Giacomo Puccini: Madama Butterfly
#top10tracks - A Classical Toast: Drinking Songs