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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5c30862548ebffb4d96aea117cda56a8f67bd4107f7ff076c37fab2fa87bdf. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/85cec5ec-a6d1-4b66-8805-4c4d40f54448.json and https://artists.proofprofile.net/proofs/artist/85cec5ec-a6d1-4b66-8805-4c4d40f54448.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Puccini: Tosca, Act 1 Scene 1: "Ah! Finalmente! Nel terror mio stolto" (Angelotti, Sagrestano, Cavaradossi)
Orchestre De La Socit Des Concerts Du Conservatoire
Orchestre De La Société Des Concerts Du Conservatoire
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1bc3ccb92f62a725db93c0bad0c71804970dfa0899a1ee6524ce97ab877602c. 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/GBAYC9701392.
Puccini: Tosca, Act 1 Scene 5: "Mario! Mario! Mario! … Son qui!" (Tosca, Cavaradossi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65583a522d6c6b8a70e44fa9cf9f9330fa6a03283bd7dce0833a39de45bd23e. 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/GBAYC9701395.
Puccini: Tosca, Act 1 Scene 8: "Un tal baccano in chiesa!" (Scarpia, Sagrestano, Spoletta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8b7c729ee061033799035eb67828a04e812012ba85a2575866a6d312627f37. 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/GBAYC9701398.
Puccini: Tosca, Act 1 Scene 9: "Tre sbirri, una carrozza" (Scarpia, Spoletta, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d5efc5c13d686d5855c54df875c04cc2f7bff2fb108032f0997dff18e520e2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBAYC9701401.
Puccini: Tosca, Act 2 Scene 5: "Se la giurata fede debbo tradir" (Scarpia, Tosca)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd4c364ce5a1df251da0b4ee719e5e05532ebcd3a21cdb0488b869f65639790. 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/GBAYC9701411.
Tosca (1997 - Remaster), Act II: Vedi, ecco, vedi, le man giunte io stendo a te!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb674c2aab564a40af256ac7d22fe07364c428439e0e65761655f8503eada78. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBAYC9701413.
Puccini: Tosca, Act 2 Scene 5: "E qual via scegliete?" (Scarpia, Tosca)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72b0903db943996118d013c21538e7a46d8f14274da507b832d39db4dcb22de. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/GBAYC9701415.
Puccini: Tosca, Act 1 Scene 5: "Ah, quegli occhi … Quale occhio al mondo può star di paro" (Tosca, Cavaradossi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60594bb3ba497660f9050f7b5f07d0a122897965ea6d8a2f9997670f839ff41. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/GBAYC9701396.
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
Puccini: Tosca, Act 1 Scene 9: "Or tutto è chiaro" (Scarpia, Tosca, Sagrestano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42199d83068acd4316b41e4c70624212a1ca619ef17692237f84645b7e3523a7. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/GBAYC9701399.
Puccini: Tosca, Act 1 Scene 9: "Ed io venivo a lui tutta dogliosa" (Tosca, Scarpia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0058bdf61789e1041853d6e2012c704b684d151e1274e562ee23eb21d756186. 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/GBAYC9701400.
Puccini: Tosca, Act 2 Scene 1: "Tosca è un buon falco!" (Scarpia, Sciarrone)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704d186c6fd227814991234f6797b5ca09036b56bb7bc5ba0e6572a770945b45. 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/GBAYC9701403.
Puccini: Tosca, Act 2 Scene 1: "Ha più forte sapore" (Scarpia, Sciarrone, Spoletta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e6bd0a13dd58398e4e590b511b4a1a61fd081598df533b13c1b5f3005230eb. 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/GBAYC9701404.
Puccini: Tosca, Act 2 Scene 2: "Meno male!" (Scarpia, Spoletta, Tosca, Cavaradossi, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3648df429e82b90433786279a6af9b855ba54f06157fac47fb815e7cc0be9bf6. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/GBAYC9701405.
Puccini: Tosca, Act 2 Scene 3: "Dov'è dunque Angelotti?" (Scarpia, Cavaradossi, Spoletta, Tosca, Sciarrone)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998d34b7e2bfb93d0c7cf3cd5366a66cd484ab1eb66201b9a4e781e66106e999. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/GBAYC9701406.
Puccini: Tosca, Act 2 Scene 4: "Ed or fra noi parliam da buoni amici … Sciarrone, che dice il Cavalier?" (Scarpia, Tosca, Sciarrone, Voce di Cavaradossi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdccbd115bcc0a1125975044357d2f3bf51d46fcf6377f284f767010ea2d661fc. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/GBAYC9701407.
Puccini: Tosca, Act 2 Scene 4: "Orsù, Tosca, parlate" (Scarpia, Tosca, Voce di Cavaradossi, Spoletta, Sciarrone)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b6a65f0445513b74795a0923eb6ad512684466a62362b76f7790b46681fb3e. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/GBAYC9701408.
Puccini: Tosca, Act 2 Scene 4: "Nel pozzo... nel giardino… Floria! … Amore" (Tosca, Scarpia, Sciarrone, Cavaradossi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214bc4c54771181c2263adfac2a94512e19f0b221c5008f70701f6bd6358d520. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/GBAYC9701410.
Puccini: Tosca, Act 3 Scene 1: Introduction. Andante sostenuto - "Io de' sospiri" (Un pastore)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9418eb9540bfe5240cde41708ee8ea68f9a88f10b4a97e9a699caff9cf445dc. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/GBAYC9701417.