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 0xde710a94e79f76a98dadb2c27b8985753e51c08b83079ab572a2040280eebae9. 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/3550e88d-2c14-4f02-a6c1-d79e909cdafb.json and https://artists.proofprofile.net/proofs/artist/3550e88d-2c14-4f02-a6c1-d79e909cdafb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ekpere Maka Ndi Nwuru Anwu (Prayer for the Dead)
Blessed Lamb (OVLO Virtual Choir Version)
Blessed Lamb - OVLO Virtual Choir Version
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 0x07730292f7a5989fe99bf29c98aaf626a1fe47cdd000794e2b02de3c4546c7fe. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZES62107944.
Lord Have Mercy O.O.M III - Synthetic Choral
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4b843ea7bda177550e864c15c668e6e4738089f16ec9dcf873551a2d2663a4. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:28:52Z), 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/QZFYZ2226958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09987f58e088655b6de6d88e43f0fa5a62a79ed903289167489e57984c129fd1. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T08:34:53Z), 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/QZFYZ2226959.
Ebealen Tohanmhan O.O.M XVIII - Human + Synthetic Choral
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d02b838b09f3dfa26bbeaa96148710787ad8296de1cbae6b4f183673297ed8. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:17:40Z), 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/QZFYZ2226960.
Eyen Erong Abasi - Human + Synthetic Choral
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c92897f5be33583aeabf6a5245846189855f672bcaf5012e6a30f809b89506. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZFYZ2226961.
Kyrie O.O.M XXVIII - Human + Synthetic Choral
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14dc798eba023de170fefbd7255587d623a9a32f808e441e1b4f7a9a6890831a. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZFYZ2226963.
Mai Tsarki O.O.M XXX - Human + Synthetic Choral
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7b2eea16f56184d06cb7d03ed1bdf6de02610b0f30053c61dc26a90eab0f47. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:47:02Z), 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/QZFYZ2226964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3877753299e9d8f66057404a384faee77ecf823a9e7db3e3467710d85d2c821c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZES52233801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e42a6b7395eaf8c422c4d95c4144630096b0c979ffdae6806d143b3312b0557. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHN32380283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d92dc73c225ffa9185df7bffcdd1bb44bc08228a52c30b5f4dd02695f9676a. 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/QZHN32380287.