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 0x3fec3ee296f7f22e38a83ac1aa3e2ed83380916499833285c8108f3363ef261d. 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/797384ee-0b50-41b9-b2aa-e070a6352f01.json and https://artists.proofprofile.net/proofs/artist/797384ee-0b50-41b9-b2aa-e070a6352f01.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 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 0x1e5c6e3592edec767cbe3b0378e3946c08dad4f3c180f91467f806f822570e38. 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/GBRH31200428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91e04da05238786e75de883b60b14bf6afca1c4f605c461cfea5236a9c91162. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/GBRH31200429.
Awoke In The Early Days of a Better World
Fugitive Light and Themes of Consolation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a7a7cdb02f631b7084f015bf034eb9a61ad182c39d21c55eea2ef7fc9aad66. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/GBRH31200646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94635e2453326a25355d6aff7f37470f742e871d23d4ab2dcf07ada3d607ab9b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBRH31200648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b887a22fae5786702a5876d026d23f23103d08f9b1ffd63f26f61dc36c78c1d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBRH31200650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f530e642d8065a6a6b30094bf9bcf186068d417347cad4b7b9afaa09fedfc00. 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/GBRH31200651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4cf4f62a8553f604cd92610c99fc9970e60a1fcbc2c856a3ac6b03e6840001b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GBRH31200652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83bef1ffca4bb605755f501e66cf7bc2c0f9ce33b409d7462715a6f3713516b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/UK6822103370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed777e75159f0a4228587d4eca6b133db652640e9184e860bb8cf9979f2cd460. 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/UK6822103377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed40e7fa8c420ce61c50db5227d88b3d4386f1bd203637c87738bb64e4dfbc3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/UK6822103378.
Hearing the Water before Seeing the Falls
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d94d22f5f18685269da77ff2cd07d68894fa672fffb83ee01378d28bcf7f535. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GBRH31201049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c90fc3949157f471f330eff9707c952937a13841e0ad514afe72fd5c82c1d8. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/UK6822311145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980470484cfdbb081740e2c89e174c8c63181eb869c6f9f24fe10587225bc707. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/UK6822311146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e2888e89e4daa9392300fa40b1a26498122e8258e0bb7933a4184c7b07ab9b. 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/UK6822311147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9e084859de54cea205afff8a658320c08fa8c25455396fcc4a65dc5da696a1. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/UK6822311148.
Hold Yr Terror Close (The Orielles Rework)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3df379cebc851ec3edbfdc9b0b5f098dee62faf7005f832a500181e2eecb85e. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/GBCSG2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3df379cebc851ec3edbfdc9b0b5f098dee62faf7005f832a500181e2eecb85e. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/GBCSG2400008.