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 0xc49d3fd07561f6a224f2ff9d6ed52838a67668d969ce48ac57db4f69f0db0062. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c19c58ad-7c76-4dc1-8fc7-0819eadb6717.json and https://artists.proofprofile.net/proofs/artist/c19c58ad-7c76-4dc1-8fc7-0819eadb6717.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xfe80a53ebac3ac0503b310967551ce53702b2795356bda8866aa5aadf5b53826. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/QM9AA1883222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb335c2e33ea4e612bf85fa6f2b9355e8db2a18535ce98400a4e8cb4a90f629f. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM9AA1883227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5da46658af0b2c030b04873d286f03e6d169572d68125adfb42de8ee1c716b. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM9AA1883229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8531a461900ef5b53143d21ed35dfc30005b574acbd3582ad8650531a0f624eb. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QM9AA1883230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bedde7d1c908009fc2dd697b599d4ea85d11bab282d8eecb95f53789311f59c. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM9AA1883238.
A Journey Through Lent to Holy Week (Live)
Kontakion of the Annunciation, Plagal 4th Mode (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c119ba439e5f1362ef7c790f3026b61239bedeb7f27443ab4df1a76d209c33. 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/USDY42005370.
Post-Psalm 50 Triodion Troparia, Plagal 4th & Plagal 2nd Mode (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e19cd994af55771f172175e3f15ff10f8118981bc2be40f1be862917c8f212. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/USDY42005371.
Kontakion of the Great Canon, Plagal 2nd Mode (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ecd0a0c65f1c46b9b5cff2b815b9c986bd1d2af0b4ba214203643d73b87fae6. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/USDY42005372.
Selections from God Is with Us, Plagal 2nd Mode (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c924a6b4a0663e7229970007448fbda12d491363b0831a8151a20404f311658. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/USDY42005374.
Praises Doxastikon of Palm Sunday, Plagal 2nd Mode (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb22467eebab92be78b7c0471872b8e668765e934796c074a2c433bffa0c21ef. 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/USDY42005378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a2437bfd992d25f99a7886e3b89a3a4bdcab9a6143ccebf36f9f511c992585. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/USHM22404938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57af4e9586289653262c360edebf67cf473efea379dce2db2d4917646a04023b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USHM22404939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c1e423e52ddefe8c6555ab299d197648d5a01171b1ef274047925905484073. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USHM22404940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703df79c840e37ecab531ffcb474005099ef6905c7bec18e8cdcfb17fe1725b9. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM22404941.
2nd Antiphon and “Only-Begotten Son” 2nd Mode
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3995cf9c5d5d95fade4180b2de828c1c3a179ea5dd2d0b8f6a07c603a394faf2. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/USHM22404943.
3rd Antiphon: Resurrectional Dismissal Hymn 1st Mode
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57301a2f8cb056e948bad8a1bd4ea24f00309046554ce2477bab2e90fc93e53. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/USHM22404945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e63f6faa9802c92bc70e29d0d7bc5b7d7983d6665f13034aead61d31b82d9f. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/USHM22404949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b5db35e1f1f880e7e6fdedc6743f79b6614b29d4042474a27f0a8078e5d743. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM22404950.