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 0x6dd9f77ec204d2779f0afc88f765cc141d8aef8f42c98c07f4cdc2f8d2a57f22. Chain 2 (Bitcoin): anchored in block 953736 (2026-06-15T03:21:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/985102d5-7bca-4612-92d3-0dcb8091f1c0.json and https://artists.proofprofile.net/proofs/artist/985102d5-7bca-4612-92d3-0dcb8091f1c0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Traditional Praise And Worship Music Of Kiev Pechersk Monastery
Kiev Theological Academy & Seminary choir
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 0xe03bfd02941d2e944328f9ee1f5f72004e2f35ca8a7b394bce7841f9f300cd87. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USHM20397032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080bd1e6ef19d01f694c15c861883af70ecd6e93d268063d0a5db50dce11cd45. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/USHM20397033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00cc7d78f6d0d5254837e962a4962a58c7260806f8e646eb013cfd7489291d2. 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/USHM20397034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca197354bc9e2d82b3f01de7b2d776e223372244d27dbac3cc47280f5eb1343. 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/USHM20397035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0146a63de41cb51ecfd31894e2a8c3a1c6cf851d9a9056137984df0953e0c19f. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USHM20397036.
Magnification To The St.fathers Of Pechersk Lavra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9067dec1bf0be5636342bf5775f0a8708a3044530ad5bdbf5d155d01a1ffb5. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USHM20397037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8440e707d70d6143a1192c2ec44609d564f8789a8199e4ead57cfddde592af. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USHM20397038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68fb6d10f96fa004e34447241c8f58dfc6f496ef1043652fe1cca2a14903d4c. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/USHM20397041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1745e6e3482b3058f1c54c675c515ed1d5c987b77ea657c61f71f147524f723b. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USHM20397043.
Thou Had Kept Thy Virginity In Birthgiving
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11d125f7d76c826cdf36582214438139461455b89669897441bfea57960c02c. 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/USHM20397045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e8921e3f87bab727f4db19d43952c07995162c3715b6795343e617b38865d1. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USHM20397048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b9b5266c27a5ad8fcb118cf9ed83f1a2774b81eda1e6dcfbbb5ebe251522e0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USHM20397057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770f7db990e9046c41afec48aa16c59600cc492816538bd78922d7bf2c27e052. 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/USHM20397058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee908982b30a1e27e59f3f290f616fc5fd750a22e9681871e2ee70113c3d77c0. 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/USHM20425162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf888f87d8d747bf6fcbeeba82a43b560bc092aab902c87d467a0d704e7f75dd. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/USHM20425163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35226dd98b4edde9319381e70905e908158eb9a9469ab9ef6c0f147e18b0cca4. 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/USHM20425164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f5dc80abc7cf88a0ca345ea0c61e792451a5d67c15f622476f4fc386980639. 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/USHM20425165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1455da9c9ba24c76635707e370dfc2ba10e45c60403e6de0705c37fec1213e6c. 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/USHM20425166.
Sticherion to St.fathers of Pechersk Lavra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff74ec33906cfd812bd67824a783bbda01d1f1c636e8ebbf7764b703463ffcb. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USHM20425167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5cf65ecb6b061e87c10ab5b7e94ef95ffe88d2e0e3cd74af3510719a4c6aca. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USHM20425168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7491285ee782773fb79cba7954515130cb8d445d03fe9f636e9713867b90dd84. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USHM20425169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc395f3a17659cd4097a70bb3c111fe2dd5e466de1c5f6459dbb522a812cf1f6e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USHM20425170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab53b0c7fdb3974415107e5cfb19c28a089174d4ff6163d6b318e6eeae2f8e8. 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/USHM20425174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0a551e7577702cac0b19ebb1928ecc1b7f7d9d306693e97a1769c6de3b6e37. 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/USHM20425175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf761df7204818e6eb25a8dba7892c339d1d697daa5d513b3f94adcbc2db684f3. 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/USHM20425176.
Magnification to St.fathers of Pecherskay Lavra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62a60599caff166a58e3b942616cb5efdd2af9033b00648f4e056a822500d60. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USHM20425177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997fdeab4f889093fdd3d932febe37717584375bfae3664f659aaf133c546e48. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USHM20425179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a64888f77b04e11f6c66e02dca93d9c2ab913c5511bda92b09533f389cdaab. 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/USHM20425180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1d1bb9a32248831b79660931231e129a6d54a9e1300081433c73e91aeb5b35. 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/USHM20425181.