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 0x0da1fdce6f5781c72b97ab892ee2822db33966ed0fd43f5b732e88e9c479e057. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eb5ee343-f991-4259-b039-2e4c2fe234f3.json and https://artists.proofprofile.net/proofs/artist/eb5ee343-f991-4259-b039-2e4c2fe234f3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Richard Wagner : Overtures and Preludes - Charles Gounod: Faust, Complete Ballet Music
Faust, Act IV: Gloire immortelle (Choeur)
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 0x4eee8e38baf962addc8c2fd087a6ae5179f04740af380a0a6bd6aea1237ae756. 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/GBAYC8600347.
Bizet: Carmen, Act 1: "Sur la place" (Chorus, Moralès, Micaela)
Andréa Guiot/Claude Calès/Choeurs René Duclos/Orchestre de l'Opéra National de Paris/Georges Prêtre
Orchestre du Théâtre National de l'Opéra Paris
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8ce1220c41acfda97b4162dca99adc53a31b4d0cff76b021fee260c63adabc. 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/GBAYC9701428.
Bizet: Carmen, Act 1: "Avec la garde montante" (Children's Chorus, Moralès, José)
Nicolai Gedda/Claude Calès/Choeurs d'Enfants Jean Pesneaud/Orchestre de l'Opéra National de Paris/Georges Prêtre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6fbab7f01b10a7a9a332d1c37938b9e803319d88df695dfe7ffd26a7f26cbea. 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/GBAYC9701429.
Bizet: Carmen, Act 1: "C'est bien là, n'est-ce pas?" (José, Zuñiga)
Nicolai Gedda/Jacques Mars/Orchestre de l'Opéra National de Paris/Georges Prêtre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019f7d723c3bb0620ed49c9ba31bc6dda92bb6538b413f90282ca7a5378aeb7c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBAYC9701430.
Bizet: Carmen, Act 1: "La cloche a sonné....Dans l'air" (Chorus)
Choeurs René Duclos/Choeurs d'Enfants Jean Pesneaud/Orchestre de l'Opéra National de Paris/Georges Prêtre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45ff96ecc330a96f352cfa30e4fe4589ad487ba9e8c4d4f1db50018191f7401. 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/GBAYC9701431.
Bizet: Carmen, Act 1: "Carmen! sur tes pas" (Chorus, Carmen, José)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48fbde3577dda88b48600251078433ffb9e9297ec64e969df1888efd3258dfe5. 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/GBAYC9701433.
Bizet: Carmen, Act 1: "Quels regardes! Quelle effronterie!" (Carmen, José)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5575af3e02902aa2fe7143f06813ef1ae096d9a820c75b5e1f4c72b2dfd4ebb. 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/GBAYC9701434.
Bizet: Carmen, Act 1: "Parle-moi de ma mère!" (José, Micaela)
Nicolai Gedda/Andréa Guiot/Orchestre de l'Opéra National de Paris/Georges Prêtre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b26a65da523bfebc8cda809f837c61d277c1b39992884e897e6313cd585d89. 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/GBAYC9701435.
Bizet: Carmen, Act 1: "Reste là, maintenant, pendant que je lirai" (José, Micaela)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84950bb1b92bc15fa783ec1c6e6c4c8bae6e60812486107b1434a5a193581e35. 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/GBAYC9701436.
Bizet: Carmen, Act 1: "Que se passe-t-il donc là-bas?...Au secours!" (Zuñiga, Chorus)
Jacques Mars/Choeurs René Duclos/Orchestre de l'Opéra National de Paris/Georges Prêtre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c8b0a5787387ad382bc06e1a97fc0af3cb7491eece476f8b70099a1e039f97. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBAYC9701437.
Bizet: Carmen, Act 1: "Mon officier, c'était une querelle" (José, Zuñiga, Carmen)
Maria Callas/Nicolai Gedda/Jacques Mars/Orchestre de l'Opéra National de Paris/Georges Prêtre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b83a6a3574340ac2a241caeb8a32beae83e11b2e1d28ced7e19c48db05e238. 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/GBAYC9701438.
Bizet: Carmen, Act 1: Séguedille. "Près des remparts de Séville" (Carmen, José)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267669f9e76a7d0627a51e041945f7224727924cbd03cd70ca984074b8e18a76. 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/GBAYC9701439.
Bizet: Carmen, Act 1: "Voici l'ordre; partez" (Zuñiga, Carmen)
Maria Callas/Jacques Mars/Orchestre de l'Opéra National de Paris/Georges Prêtre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc86636e97ba6897764dc5939eb6a46383ebd5010a6b5c0885c251e94a8c716. 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/GBAYC9701440.
Orchestre de l'Opéra National de Paris/Georges Prêtre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5ded4e4a6958d1d8515c07625bd021529c37e8318f372f7f587ea9485f58ed. 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/GBAYC9701441.
Bizet: Carmen, Act 2: "Messieurs, Pastia me dit" (Frasquita, Zuñiga, Camen, Mercédès)
Maria Callas/Nadine Sautereau/Jane Berbié/Jacques Mars/Orchestre de l'Opéra National de Paris/Georges Prêtre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953fd2de2e6de5d54f61a5566659bf80bf379f63bfe0c3199bd686ece86599a5. 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/GBAYC9701444.
Bizet: Carmen, Act 2: "Vivat! vivat le Toréro!" (Chorus, Zuñiga)
Jacques Mars/Orchestre de l'Opéra National de Paris/Georges Prêtre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d4bd80f04f82a9e3d0dadfa5591672c04e85209bbef1af17ec6f574a0805cc. 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/GBAYC9701445.
Bizet: Carmen, Act 2: "Votre toast, je peux vous le rendre" (Escamillo, Chorus)
Robert Massard/Choeurs René Duclos/Orchestre de l'Opéra National de Paris/Georges Prêtre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d76b971a03f3caa29b43bafe312f52fe14a89c3d0134e7bed61c1a370cb2e80. 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/GBAYC9701446.
Bizet: Carmen, Act 2: "La belle, un mot" (Escamillo, Carmen, Zuñiga)
Maria Callas/Robert Massard/Jacques Mars/Choeurs René Duclos/Orchestre de l'Opéra National de Paris/Georges Prêtre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230ccbe72dbc143751bea0623fc36bb8b9d19a46a134d6de5dacb251d24426b6. 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/GBAYC9701447.