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 0x83a40a9bb9f513ab3ab30fdd5dfb3d037fb9c68cd16eb503e801011da5aa0ff7. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f0a8a0cd-20fc-484c-a062-cdf7b95863c9.json and https://artists.proofprofile.net/proofs/artist/f0a8a0cd-20fc-484c-a062-cdf7b95863c9.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Idomeneo, K. 366, Atto III Scena 3: No. 21, Quartetto "Andrò ramingo e solo" (Idamante, Ilia, Idomeneo, Elettra)
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 0x89ddb9f41dd36947e69a4c45829ee346424950a939375bd0861d9fb3a627e267. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140832230 — a six-check JSON result.
Idomeneo, K. 366, Atto I Scena 8: Pantomima - Recitativo "Eccoci salvi alfin" (Idomeneo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a97b8673e36dc5257ff3cd68c12176b888882737eab3e5541a7842ec17885c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140831140 — a six-check JSON result.
Idomeneo, K. 366, Atto I Scena 9: Recitativo "Tranquillo è il mar" (Idomeneo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0555666bfe97300c720e43bd85cf825a24f765d185cd5d3a094fcf1fd3fe1550. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140831150 — a six-check JSON result.
Idomeneo, K. 366, Atto I Scena 9: No. 6, Aria "Vedrommi intorno" (Idomeneo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4e010739619dcafd28a034dc888ec15f899cbe7a5955d2a7b45bdbb05fe219. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140831160 — a six-check JSON result.
Idomeneo, K. 366, Atto I Scena 9 - 10: Recitativo "Cieli! che veggo?" (Idomeneo) - Recitativo "Spiagge romite" (Idamante, Idomeneo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456c314a6edbea4fd8dd5073e1f0aaab2799ad583ef76f2a56ed83651e26217a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140831170 — a six-check JSON result.
Idomeneo, K. 366, Atto I Scena 10: Accompagnato "Spietatissimi dèi!" ( Idomeneo, Idamante)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e7b5ce51e13d01ac6256c7e58ab46e8642aa9454480cd8bbebe19674d7fdfb. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140831180 — a six-check JSON result.
Idomeneo, K. 366, Atto II Scena 3: No. 12, Aria "Fuor del mar" (Idomeneo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5128962ba9bc1ed602fb3bc6313c79bb50066f026feb24364cb3c93a6acdc7a1. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140832060 — a six-check JSON result.
Idomeneo, K. 366, Atto II Scena 1: Recitativo "Siam soli" (Idomeneo, Arbace)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c46e9790b46dbe5159977d866489e02d6b5f27f3c91fa1d8a7a8a9eb9d4cdb. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140832010 — a six-check JSON result.
Idomeneo, K. 366, Atto II Scena 2: Recitativo "Se mai pomposo apparse" (Ilia, Idomeneo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440ee54ca8cb8115a60b83bde6034e92a8394fcd6f34a7aa49430ed973cdc052. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140832030 — a six-check JSON result.
Idomeneo, K. 366, Atto II Scena 3: Recitativo "Qual mi conturba i sensi" (Idomeneo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0685a0c19cbbabac245127fe5e25993adcd912bfd8a5619c3d0027a721724819. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140832050 — a six-check JSON result.
Idomeneo, K. 366, Atto II Scena 7: No. 16, Terzetto "Pria di partir, oh dio!" (Idamante, Elettra, Idomeneo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc16217f528dbdacfad918febfff67cd0c1b7469e96478df9b17135f921e99f. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140832140 — a six-check JSON result.
Idomeneo, K. 366, Atto II Scena 3 - 4: Recitativo "Frettolosa e giuliva" (Idomeneo) - Recitativo "Sire, da Arbace intesi" (Elettra,Idomeneo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541b29c61ed93d5ddf974525ea351df9ac8bec42c3d88bfac5fbb9d2def0f722. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140832070 — a six-check JSON result.
Idomeneo, K. 366, Atto II Scena 7: Recitativo "Eccoti in me, barbaro nume!" (Idomeneo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae119c8b338306132cac2e3f5e1f966a507398e14a6dbe85e3196cf6391b705a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140832160 — a six-check JSON result.
Idomeneo, K. 366, Atto III Scena 3: Recitativo "Cieli! Che vedo!" (Idomeneo, Ilia, Idamante, Elettra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179db4403505683c555a6e67ce93372d0630de9f313612b4b4a632f2b2e59fda. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140832220 — a six-check JSON result.
Idomeneo, K. 366, Atto III Scena 4: Recitativo "Sier, alla reggia tua immensa turba" (Arbace, Ilia, Idomeneo, Elettra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47a83f1df3e117b7f56a7a85ce9143078db06a60c6d5659188930681f26d25c. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140832240 — a six-check JSON result.
Idomeneo, K. 366, Atto III Scena 6: No. 23, Recitativo "Volgi intorno lo sguardo" (Gran Sacerdote, Idomeneo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6948c412459535a28f261ef9e1a6fec9103ed63560b13c7b5df4771e94bc95e. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140833010 — a six-check JSON result.
Handel: Theodora, HWV 68, Act 1: Air. "Descend, kind Pity" (Septimius)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a436b696d13a3f45cf640068c4128d15637b4fbe5742ac3763179b93a3f501. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ200310013 — a six-check JSON result.
Handel: Theodora, HWV 68, Act 1: Recitative. "I know thy virtues" (Septimius)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5808255448b5630caf09300b5e9248616a0184682b8d9595c07042a5f24128f9. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ200310012 — a six-check JSON result.
Handel: Theodora, HWV 68, Act 1: Recitative. "Deluded mortal!" (Theodora, Septimius)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbadec54b01381c1d7a64b07eef9b3d48db653096f71358c061d2d7ae40d368b2. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ200310024 — a six-check JSON result.