{"copyright_id":"0xdeae963f6e4ce55ab36ce985df6abc8e87f85d30fb883fe31e2d7be5228290e4","name":"St. Petersburg Optina Pustyn Male Choir","registered_at":"2026-06-11T11:46:31Z","symbol":"NIM0018293","token_address":"0x58b9dfb1a3b5a9fcc4735c1178cefbd39681ec27","type":"artist","uuid":"0d8215f1-eda5-491e-86a9-f3080dd4f59a"}
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 0xdeae963f6e4ce55ab36ce985df6abc8e87f85d30fb883fe31e2d7be5228290e4. 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/0d8215f1-eda5-491e-86a9-f3080dd4f59a.json and https://artists.proofprofile.net/proofs/artist/0d8215f1-eda5-491e-86a9-f3080dd4f59a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
St. Petersburg Optina Pustyn Male Choir: Russia's Most Beautiful Songs
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 0x1d1db169730d90b35d93d2e11bbe679ceaccec30a0712bb43af852c386fc31c7. 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/GBCKG0500443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c3f082e4346fb18889ccb4dea8e46d5143fbd5f14b38f213e2cd357cd1198e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBCKG0500445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85729b5129fb4546670a3a8795a8ed99c83a41767735a2fb18b233205a0d4098. 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/GBCKG0500447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84038bdfba2db3a1709b666fd5da16256c8f96d458c823c2d02b6b8fa6ed253. 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/GBCKG0500451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf351a83a7d825cf0aad5d18393bfa8658dd9904469b587f5b332cd1f92590e90. 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/GBCKG0500452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660dd8382a090c06b23f1cf0c27f8ee6b027eab68c56ea0ce557ba7c54a253cb. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBCKG0500444.
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 0x86ad1e777eb147bd0b1afec5056b848969792b75e900eb4e5e180d1453172d12. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/GBCKG0500446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b69a0cb073cd269b8c64377bddcfeeb4e8d1c7a279d9fd08554fb83b44f596d. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBCKG0500448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36c645e9070f3519a38d1d13e7d5dcfdea855d8560377a680e81677bd98d068. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/GBCKG0500450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc420d2bbe1737bdff0bdc7a9b468da05764370643a5c816da3b3ed763b0d90b9. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/GBCKG0500453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c810682865a3d8f2e8374d402c6df7df11d9a17147725218c3082cb1954a82e. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/GBCKG0500455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21dd1a7c7cc55c7d6691f5b843836197b64eb1c0b2f4706cfcec2c42c2a14694. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/GBCKG0500456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ee7af0af8ab0b1e1340e1f2d316084a9e7c9fab47e2d19aa03ab8f9e2a30b0. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/GBCKG0500457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892d7e0ed4b155433a6a47d678060f967871649d3a54f7f435e0ef28540bb78b. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GBCKG0500459.
St. Petersburg Optina Pustyn Male Choir: Orthodox Chants From Russia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788e714517649718ec182069fa7124541126a32228d8f7bb3c7f26030205c65d. 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/GBCKG0701054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1ad38e53756b94576fd663b91abc17147c2c17998543fc5a8b96227c5ff03b. 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/GBCKG0701056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6b2e4d487bad07725bb45cf44027ea9933728e26f689a72e6031d418804933. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBCKG0701059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8bedcfaa23cb69bc8d245ea6015bf1b8feee0104b3770e1e11bb6df58fbf0e6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBCKG0701063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa5cf8eb331cc1e36bb823ba0f4ad3f01ae6a87e6961c4f13da17964479722a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBCKG0701064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d5f3ddee06aec35ab95a6cdc1a6b1204a6dcb02989c7b4d4c8ec95c916ab45. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/GBCKG0701053.
Psalm 1, “Blessed Is the Man” – Psalm 2, “Why do the heathen rage” – Psalm 3, “Lord, how Are they …
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c9d7624ef4ab583a8e40a958ae0a255c54f8fed8e31e76b5aa22a0d04a78d9. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GBCKG0701055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2b59b3cdbf9648e823df22a5b18ab891201649b9bc64eda1ffcc45326831ba. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBCKG0701060.