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 0x6c6b627bc1d71df04fbbcbeaf3b7ab3cfe343d69194f9bebec1746770ce62303. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/276d3aaf-eab0-40f0-a23d-52a7eb90a07f.json and https://artists.proofprofile.net/proofs/artist/276d3aaf-eab0-40f0-a23d-52a7eb90a07f.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
From Transfiguration To The Cross, Pt. 1 (Byzantine Collection, Vol. 11)
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 0x3df53f2f1f62ee45fe5c518fb1a06e6b0be763357ca3117a6a7aab87fef67c0a. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR2X41652015 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e69df0229155f7af3bc5109c857dda0df8e7059fd52054627ca08f5b543ea4. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR2X41652019 — a six-check JSON result.
Small Paraklesis to the Virgin Mary (Byzantine Collection, Vol. 10)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfbc283913421b92839610cb48f67b83b3b0bdaa824d192d0cd4f97b52264f66. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR2X41651992 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74970430ff20e0de932b18820dd4c28e2bb74cad4536d10e49ac5dd1f999d691. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/FR2X41651997 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1928601d2bbe16f8d839682b294cb39d0fb8b7caff4263a355e857ec841c9093. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR2X41651999 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643eb15afa47b477e9a3888a213f8ab189d3385e4affae868e5c98252116a23b. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR2X41652005 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3097d0ae79e537ce7d590b5f4d28cb23187b123264ea4d42752e782109248370. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/FR2X41652008 — a six-check JSON result.
The Vespers' Psalms (Byzantine Collection, Vol. 3)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x739c1728fbb504ee5dca1b5d8a5476b79b8f6c1ac090961d8b6105a51cd2f34f. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR2X41652195 — a six-check JSON result.
The Nativity Matins (Byzantine Collection, Vol. 2)
The Eklogarion, Pt. 1 (Byzantine Collection, Vol. 1)
St. Jhon Chrisostom Litany - Bonus Track
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f41ce6a329f1c30507b3143ba7c2ef2c25ce2e20d658daac37a1b060b955070. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/FR2X41644654 — a six-check JSON result.
Suplications to the Lord Jesus (Byzantine Collection, Vol. 7)
Small Paraklesis to the Virgin Mary, Vol. 10
Presentation of the Lord in the Temple (Byzantine Collection, Vol. 4)
Presanctified Liturgy (Byzantine Collection, Vol. 5)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ada75e38e39587074c5f2595c720f7a5b443434e5a538d79178e41e595ccf2a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR2X41652148 — a six-check JSON result.
Metalipsi, Holy Communion Prayer (Byzantine Collection, Vol. 9)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b6d45b72060f6a2d551f213ce1c4397fa064b486639411cbd799d6dad9d2a7. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR2X41651989 — a six-check JSON result.
Matins of the Pentecost (Byzantine Collection, Vol. 8)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f9ad507c1162e8b03a00c0cc8f83c39e15906b8e538364bf327b5d38d6fce5. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR2X41652038 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4468bb14c180cb320f5f3b8612937ba92efd04cb71fd122c4f5a73608faa4c. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FR2X41652043 — a six-check JSON result.
Great Compline Service (Byzantine Collection, Vol. 6)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5897499eb44f453ace3560a6cf885957600c761771df948d5681afb5a58ece. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR2X41652113 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e6a9e448564f568c28e9e8b593bd0d1fb2b54b7ac2d5453b2acf694d2b51b7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR2X41652114 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ee38dce762997dc59ebbdbe70aab03031719241d7f71f53faca9fa59b92564. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/FR2X41652117 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579cb4af1d2151c915a1837262b0a1242ceec36a4402321c28dc2d42b549d86f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR2X41652120 — a six-check JSON result.
From Transfiguration to the Cross, Vol.12 (Pt. 2)
From Transfiguration to the Cross, Pt. 1 (Vol. 11)
From Transfiguration To The Cross, Pt. 2 (Byzantine Collection, Vol. 12)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdabe83ed9425ea6b2d2c3eb4ed8bcf54daa78ea0e44da7e58fdcac5b67991f9d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FR2X41652088 — a six-check JSON result.