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 0x8bb5d041f8221553bbdc1e4c47e5c9397e548ff9b0d30d4b5118238a59d095ac. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dfa4b457-26b6-43a7-a98c-51487f7ba4ba.json and https://artists.proofprofile.net/proofs/artist/dfa4b457-26b6-43a7-a98c-51487f7ba4ba.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Schleiermacher: Nach Markus. Passion (Live)
Hohe Messe in B minor, BWV 232: No. 1, Kyrie eleison
Johann Sebastian Bach: Hohe Messe, BWV 232
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 0x324bdf14c8c5195c2412b648c17633f4e38ec86d7974f3c83c45efb77c15d353. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEW741808001.
Hohe Messe in B Minor, BWV 232: No. 4, Gloria in excelsis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa091a283ed43db7bdf01203dbd875a3a10529a94335dac72e491843d06f5e8e9. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T09:19:57Z), 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/DEW741808004.
Hohe Messe in B Minor, BWV 232: No. 21, Et expecto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4664ef14ba740802b92487a8ba8d37f23c252ef2bb592db5016a4d8263358a7c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEW741808021.
Hohe Messe in B Minor, BWV 232: No. 23, Pleni sunt coeli
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc8e93f028a5b2df3b8881fd77d57841434cf901983af9d267ae807ff5e31c6. 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/DEW741808023.
Hohe Messe in B Minor, BWV 232: No. 3, Kyrie eleison
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5352e2c1dfe54eceae6325f6bad5795fb34058673529416704a9858d318d1d4. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:29:37Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEW741808003.
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
Hohe Messe in B Minor: No. 5, Et in terra pax
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa252af65b49701aafe57dd02df537613faa90469e7b7f8be2d369b80016b4d79. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEW741808005.
Hohe Messe in B Minor, BWV 232: No. 7, Gratias agimus tibi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8229b515192cb7ad85d9a040717e7d6a70f9d7461dd1aeffe395ae74cf12bc64. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/DEW741808007.
Hohe Messe in B Minor, BWV 232: No. 12, Cum Sancto Spiritu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4165e9543dfd963e6b7957455ab447145c45e9f054e1f8816004b2b2eecd2023. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEW741808012.
Hohe Messe in B Minor, BWV 232: No. 13, Credo in unum Deum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95785a776802772197c8e5a3ada227c243f79d9b88566a3393d4c0c8bab386bb. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/DEW741808013.
Hohe Messe in B Minor, BWV 232: No. 14, Patrem omnipotentem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1483ba84e25bafe4aa09851791d8505cc73e12e66f7e8040c5cfdd817c741d8f. 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/DEW741808014.
Hohe Messe in B Minor, BWV 232: No. 18, Et resurrexit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d016e1f16b736e3f9af6f51a7363f3e7f98e4ca2abedd7d28ba951fbf077bb3. 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/DEW741808018.
Hohe Messe in B Minor, BWV 232: No. 20, Confiteor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a082f3dd56b255b613d5e4ebf5b543374d331d4d4ab91ded9e388ccc0e6fac. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEW741808020.
Hohe Messe in B Minor, BWV 232: No. 22, Sanctus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c6204b7a00d3403957d8c12fec08c1cf2e395e8b4f69d88aa8bbafec719625. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEW741808022.
Hohe Messe in B Minor, BWV 232: No. 24, Osanna in exelsis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da48a0bf616aa2252ba3f410d70ce14fed8da3de769975387b072175c92e681. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/DEW741808024.
Hohe Messe in B Minor, BWV 232: No. 26, Osanna repetatur
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a53f6a704825d8ec6948c89fcc69487a5b83ebfe4d919c9cb075ce06d422f7c. 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/DEW741808026.
Hohe Messe in B Minor, BWV 232: No. 28, Dona nobis pacem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9b6222e0420b8e7a7f0450de152fedd858dc9ea0b5fe80fca226a247380349. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/DEW741808028.