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 0x3acb0c3c379291b47d670a95cee0d3650ae1619c9ecaf2c66b4c5e34c4fc4725. 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/31b65336-df54-4d3a-98fc-73650e33cf33.json and https://artists.proofprofile.net/proofs/artist/31b65336-df54-4d3a-98fc-73650e33cf33.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Šūpuļdziesmas. Mēness ceļu rādīs miega peles vezumam
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 0xa998e268aa4bfeee5bdb78b2bfd3b0dbf8e52117ff2131c95f648daef70ec946. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:49:04Z), 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/LVL152008240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511aedccbd5fdf0abb6ac3f40231eeae368d7d4b1a0eb2b2a6d95181c9135788. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/LVL152008239.
Ko nestāstu nevienam (dzied Anrijs Grinbergs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a8e4a1a09cafa7633d19a7af4de9ab17a9c66af50c6490fbb5ce5ef23eb9e2. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/LVL152008237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e07e808ab89aa02be4a2ebc4b32977972ed5e64412c392e16e9c29293b5373. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:08:12Z), 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/LVL152008236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73e9816b562da9ff8d3a21ddf625f272b2c740a954ec4279041107998e76804. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/LVL152008235.
Miegam kājas nogurušas (dzied Dīvs Reiznieks)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e852e4efc7fc72bc5df2133ab5572cb557d2e03618f166f83bd3a24940e268. 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/LVL152008234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3eabf5ddb650cd6e7aa7a44e4447cdd0155fa3ac52650f77fb7c6b6f22f081. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QM7282319914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830a203662fa1fb34561372e0a12917f30083ed4b633e7ee8b9fd6130a51b0cc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/LVL151502406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0b223e23ccf0df5b676b5a541700fbe2a48d38e31272c43101cc562217eefa. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/LVC211100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6097970809bf2c85af259bc73714fe1f00b30627a35bdc61103d7b4fb0443a7. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/LVL152104854.
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