St. Symeon Orthodox Church Ensemble "Antiphony"
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 0x7727ed957d397197009adf6121ac9c20db5807e3eaf41d7f912870b4c0d73ea7. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4bd39204-5338-402d-8d7a-2f4361779d1d.json and https://artists.proofprofile.net/proofs/artist/4bd39204-5338-402d-8d7a-2f4361779d1d.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568e76e55d94bf5de7ade3a98f4b44988c1495654f297c62b1a6489ac2ef4e8f. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDHM1705430.
Rejoice, Life-giving Cross (Byzantine Chant, Tone 5, Special Melody "Rejoice")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df20f8d36d906fa643c0ffeedf94cc81141c1a38850d3d96a4c0e0714c619b9. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/USDHM1705431.
Dogmatic Theotokion Tone 5 (Znamenny Chant)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24a9d5dfa298e0450f9dbffb0cd139c08aa899391022ec00832c910a98d0bdf. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDHM1705432.
Have Mercy On Us, O Lord (Lesser Znamenny Chant, Tone 6)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440ab8cea9b510ba719a59850bc31c14c2bc1868199706c15bcdda9127b8532a. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/USDHM1705433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0520dcfbd349e61b68f639032e1c0a43df41aed9880d0c1790cd8ab162d91d. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/USDHM1705436.
It Is Truly Meet (Byzantine Chant, Tone 5 "Phrygian")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a35db4a31c28a17fe331c67d831b3eea01c9f79d163f33e13865c2bb7126ff. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/USDHM1705437.
Resurrectional Kontakion Tone 7 (Byzantine Chant)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1bc3cce5adbb87a2066d00dd2e47489e3905138d93d1a40ddb1a1a1ee8053a. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDHM1705439.
Troparion of Theophany (Znamenny Chant, Tone 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f232b3ef30039431d7048feaa76302e413906537a73ebf76cc404c9e24e8ba8. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USDHM1705440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8abddb0195d7d26aad22e89e0decbe2b4f15e705b45da97d6f99cc0d13a146a4. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDHM1705449.
Rejoice, O Isaiah (Byzantine Chant, Tone 5 and Tone 7)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0302e18e7ef69c500b2774f52fcd198d664fef7a948b91b57ddddbe27b80734. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USDHM1705450.
Exapostilarion of the Cross (Putevoi Chant)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b72b2f2e3117a7201ead05c01b494e348f010dfc0efcbe77ca02561c1885ec7. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDHM1705451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d682c90134d7e430478948327e6ea9aff09cf094f32ee01f324feb8e4fffe8a. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDHM1705454.