thumb|Image of Bruno de Sa Bruno de Sá is a classical sopranist from Brazil. In 2016, he performed at the São Pedro Theatre in Gianni Schicchi, The Magic Flute, and The Marriage of Figaro. In 2019–20
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 0x57635353a51b84c15b1e95f3c2f8cef359e8862907e58be48be1eb73712906d3. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/48f4ea89-cf23-48d0-aa8e-3d6bff0f8d97.json and https://artists.proofprofile.net/proofs/artist/48f4ea89-cf23-48d0-aa8e-3d6bff0f8d97.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hasse: Serpentes ignei in deserto: Introduzione: I. Grave
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 0x0c065919dd42cf34a38aa20c3fdfeb5755e1c912316af5f1513d14c4c44ff77e. 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/GBAYC2400762.
Hasse: Serpentes ignei in deserto: Recitativo. "O portenta" (Nathanael)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd8fa4ea640bd040c72d02c448aed05a8c06765009b1b4c1fd8a5c7b7d32f26. 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/GBAYC2400773.
Hasse: Serpentes ignei in deserto: Introduzione: II. Fugue
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e9e0f89b71d7f2148d35357dc1d79fa8b16ecc6261e1b1f4bac0446f6af8e5. 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/GBAYC2400763.
Hasse: Serpentes ignei in deserto: Aria. "Furit grando procellosa" (Nathanael)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e70121926dc5d91cb73bfeeacf9b9e6a6e0ed9face6190417b704a4024a150. 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/GBAYC2400774.
Hasse: Serpentes ignei in deserto: Recitativo accompagnato. "Tu, qui a cœlo dilectus" (Eliab, Eleazar, Moyses)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3551ea448b78c591c153534a53cfad29df7ea1b4fe783f01a68884b27121b9f9. 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/GBAYC2400775.
Hasse: Serpentes ignei in deserto: Recitativo. "Longo labore oppressi" (Eliab, Eleazar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa8919fdae011b700b887117ff2d80acab8a4dc9aa69d96ee3bf79d082eda8b. 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/GBAYC2400765.
Hasse: Serpentes ignei in deserto: Aria. "Dolore pleni" (Eleazar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa37ba31787c55f9566fb768d316c576d60230c22978469e6c53fb782c6a189df. 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/GBAYC2400776.
Hasse: Serpentes ignei in deserto: Aria. "Incerta vivendo" (Eliab)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ec74de7fe022e2007c7d58fee5946632252ede28a99b4a4752afa22604c03b. 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/GBAYC2400766.
Hasse: Serpentes ignei in deserto: Recitativo. "Tandem ultionis" (Angelus, Moyses)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98b873b64d822ba669ca1e85eb4b59c36ac2cd744a008184b5386780ffee718. 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/GBAYC2400777.
Hasse: Serpentes ignei in deserto: Recitativo accompagnato. "Ergo semper, ingrati!" (Moyses)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97726ecab80c4b6e6267a10211e30580392ff0b708a5026543490d2f8c5bf1a3. 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/GBAYC2400767.
Hasse: Serpentes ignei in deserto: Aria. "Aura beata, plaude jucunda" (Angelus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65b8f21717fd9bf2eec0a34db3e47d0e163131174844751e60f9f49057bc872. 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/GBAYC2400778.
Hasse: Serpentes ignei in deserto: Aria. "Cœlo turbido et irato cadant fulmina" (Moyses)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09435fc23bb3f10c86b21386c75e030d8e2c07d9423c07dbdda2ed799d16cc40. 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/GBAYC2400768.
Hasse: Serpentes ignei in deserto: Recitativo. "Ecce placatum cœlum nobis levamen præbuit" (Josue, Eleazar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a4b97da4b8f577bda49246b0c92c4c348a1502239ecee6d8946f23db26ce9b. 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/GBAYC2400779.
Hasse: Serpentes ignei in deserto: Recitativo. "Tandem cessent clamores" (Josue)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0767dd21f40da1e36a2ff77d4dec77f4fbc4709d94dd561d9c8575e4c434b6. 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/GBAYC2400769.
Hasse: Serpentes ignei in deserto: Duetto. "Moesto corde suspirantes" (Josue, Eleazar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77afba588230be70f180ad2150e105671f65487116210fe3941b2c2a440755d. 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/GBAYC2400780.
Hasse: Serpentes ignei in deserto: Aria. "Spera, o cor" (Josue)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01cbe2f890e22cfb3615dbcf6613b902065e368d5b752f9370f0c86674e5272. 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/GBAYC2400770.
Hasse: Serpentes ignei in deserto: Recitativo accompagnato. "Ecce Israel, tu vides omnipotentiam Dei" (Moyses)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb75752bc04533356d5d475366f668c3f22cba79266917ce401d08323dd3825. 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/GBAYC2400781.
Hasse: Serpentes ignei in deserto: Recitativo accompagnato. "Magis semper protervus" (Angelus, Moyses)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81aa880a60c0342636bd471a85158a93297ee3d13556ecde56731cb551a45f9. 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/GBAYC2400771.
Hasse: Serpentes ignei in deserto: Aria. "Ara excelsa, ara pretiosa" (Moyses)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599e8d046a47d722683a766e4b8448b1f7594b5a751df4f317837c5c73144cf8. 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/GBAYC2400782.
Hasse: Serpentes ignei in deserto: Aria. "Cæli, audite, deplorate" (Angelus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f6c1966adfc7f58644fa594bd9f83408b9324011937e379745cd9a3bcd3a1b. 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/GBAYC2400772.
Hasse: Serpentes ignei in deserto: Recitativo accompagnato. "Ecce conversus Israel meruit peccati veniam" (Angelus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3002e3c67a77dbef07822820c479ba1e81eb511f414fc7495c3578334f9fc3. 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/GBAYC2400783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f663943577e92a03230c02b0b30b935c79b7a79a35dda085c423069c6ad9ab6. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBPFW2100143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f50501c2eb5f9c0fd9db7161051db1c110e9b8a0272eb9b16d84c1a4e6a025e. 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/GBPFW2100151.
Vivaldi: Giustino, RV 717, Act 2: "Per noi soave e bella" (Arianna)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3644b6187a4e091eb708bf98080e70a57a4618e849af7871f05674494d8ae0c8. 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/GBAYC2101482.
Il Giardino d'Amore: Più non m'alletta e piace (Aria)
Alessandro Scarlatti: Baroque Influencer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5366dc5c52df696605994341148aa465660b62707ff07e902849d8aab4a59f2. 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/DEE472300434.
Il Giardino d'Amore: Con battaglia di fiero tormento (Aria)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa5c5fddde18bdb51b915788a60834dffd7ef5cb15e95659ad31802b42131aa. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEE472300436.