St. Peter St. Paul Cathedral Choir of Minsk
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 0xcc506bc201290e70355b19144913106085e8b15020d61e922209520d0615a49e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/570f0cd6-05f3-4a49-a38d-e7854f8cfc55.json and https://artists.proofprofile.net/proofs/artist/570f0cd6-05f3-4a49-a38d-e7854f8cfc55.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 0x9d094c99e7eefc023c27704e6aba7211fda0dd413e6e6dadd17cd218c2bae005. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:58:08Z), 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/PLA800401602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9759f071097aae2be741bf78c440ad0715bb519cdab9418d2ce6b1f2081873f3. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/PLA800401605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00324bb5e8355221ee10403fc9a2cb4ae6c570d419ffb2ab148ff8ce4fbebda3. 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/PLA800401606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffdb21c677d8cc6d4fcc772b4c7aba9e5070cf8fd0945b3e8d5fa2d14c9c627d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/PLA800401608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878adba65568b503f92dc6975e5a1646db90d39aca23274c5760add6d92dd07e. 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/PLA800401609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8741c69c4e791652ad2305bd34e5cdd4b5670e5723c733bbcf934a83a8546f9. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/PLA800401610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdab5de45a62cccfefb26e7a38dbf4c19b8344a3331c12879ab319690f2cb6cc. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:46:01Z), 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/PLA800401611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa039e2e31f5c0942615ac7464716d64ccebac8d89aff1832d5dff84493a1ac61. 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/PLA800401612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337dc8ef1739a431343b7f0d9a92e77bd5518cbbb209c4c3bd92616cbb845153. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:50:07Z), 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/PLA800401614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa785ca37234804edec5060fdbc59cb87df8f54fd9197ee2c38e26e21cd071c3f. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/PLA800401615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959e6b5e24d2bfc97bc1f5da34f54ecdbd324855c77cdf00c5345bceac7c1a09. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:50:57Z), 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/PLA800401616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb778aefbb389324f9fdec0bbe83a4ce1fa62a8526bb6f2c85ebaaa08a7363b35. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/PLA800401617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a214080cd463509b75edb3dd265ec0525989804422ec73a8740dbed824d6978. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/PLA800401619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba15a4a83b9117fe2b94b6e3317854b723ff648d5719ded5b76e258adfe2ec5b. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/PLA800401620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98b2247fd9421e399403e41affab2d5c91401d5a102cc5a7705bd408174b49a. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:57:55Z), 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/PLA800401621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18e3d529ca9be061961d7b6e3374ef6ad9f13146cca61342c1ff79391180da2. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/PLA800401622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a6d57a17e1c346fa162f82c0d16e0ddb9e428bfba86cb206250c9a9912cbdd. 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/PLA800401624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e74eda979139dbc51a208a581fcad9e6a18d6e2e3fc82f0c7bef5338be3f1d2. 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/PLA800401626.
Russian Orthodox Church Music for Lent and Holy Easter (Orthodox Passover)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ebda23ae7e030beef442378805ae9f5983861d7fbf8e99866b7c0b963edec0d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/PLA800402702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394dbbebd921aed44a27796f7def9a8f521d6a27a3d128bc4d9d6be4d60070d1. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/PLA800402703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c9bb9755dd0b374afcb9754a22426d1d3bbaacc790d9dcb4d012443f5e795b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/PLA800402704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24cc89e73fbe9ee8d30a247a3f9862ee4cbdb80bebc3e9827346465b9222f49. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/PLA800402707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd9c039d739cf0c74e2eef5925c783fdfdb8a10bc6f4554684115bcfe2131c4. 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/PLA800402708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288112ec8a1c6b013e5a3415ab1d3a06fba0c52f862c2703484d8893d1921f3e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/PLA800402711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa038e0bfca3a88e43ff1912293d9bcb2bc19fe5d465d805d64afac919df1b7b8. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:02:29Z), 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/PLA800402712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e6efa53b551a81c68438a706d3855dea433cca1560bd2d5338d00816d4b1b0. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/PLA800402713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd9aa68d54dfe3854ccbe114082663bcdc9870de5aa57f4ffeca77883f401f8. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:03:39Z), 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/PLA800402717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b82205ee0f3262123202f83d0f883fb5c179cd443085b74d2d48023bfe4358. 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/PLA800402724.