BLR may refer to: Base Lending Rate, in banking Bad Lip Reading, a YouTube comedy channel Bala Lake Railway, in North Wales Belarus, whose ISO 3166-1 alpha-3 code is BLR BLR, IATA code for Kempegow
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 0xd35fd3a871b156bd182d5cfa0812aecdaa2db451ea401f6b6eb5f366b11422df. 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/7c4fe809-5545-41ac-a7b7-5bdadda7b6e4.json and https://artists.proofprofile.net/proofs/artist/7c4fe809-5545-41ac-a7b7-5bdadda7b6e4.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 0xf38b334472dabd006c1fe6d6b1aa73935d1b5a3a3b688f4df879426315537c76. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/HUMAG2013129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f6e5bf355f430ac46b3d4952088793d288cb5b672bbbabad8bd676b2aea58e. Chain 2 (Bitcoin): anchored in block 957558 (2026-07-11T11:36:38Z), 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/HUAMV2000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76a56d241669159bb3b39e42dcaa521837414d3763491d7d23e84f1d4f97a39. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/HUAMV2000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7724d3eebb90eb6e828a2b70da1fda6dcda7bd9d4e1a86a87988845af7e572c. 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/HUAMV2100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858b986e3ab9aac29637275470c161588958011ab140ced8fbbabd0b050dfa83. 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/HUAMV2100302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60999b233c3972f76cb166df41fb64330d4b6945aa68dc5ce41a6240af31916. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HUB002000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f43a2745cc1f4e38ce32b03742cee7b10841ffec66712524194e65b4d586deb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HUMAG2013037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6641adaf8e67c9c430287827b9802090a576d546820bc78b3b7b61bfbd20c825. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HUMAG2012200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89437795bc04f6d1206d8a73a2933eed7653fe65fc88ceb3f87a49a890b1d508. 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/HUMAG2012201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682a3731151ea3f8ff1df4d440c44ed383b03260188a414dbd7721a5ad7d9847. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HUMAG2012202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3534d4e16db8693b3d3c7df970bfadeaa9f5515bdb002439e34650a9c56e4ef7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HUMAG2012203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0117956963369dc687c14659a05041f182a19764f7bcc888fc2984debe1a2f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HUMAG2012204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054f1d206a4ff27e4cdf8deb4e032fbca5db5ed3802adc3cfbb94d6014571c2a. 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/HUMAG2012205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6972d732e27974aeed2101f1f179d8b8fca6acb304e0871aeba75603d469d40. 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/HUMAG2012206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872cc4161012a1f097242ce84eeae0759acc889d5790d798ed54cffdfc33f95d. 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/HUMAG2012207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35bfddb5bd96ec3491fe84be8e27107fb2f2acb1de42570bb906120501b16c9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HUMAG2012208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62bedaef0ae2252fa12b71424f292a6f75c66cce4db06fdce64904bd56c91de6. 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/HUMAG2012209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f502cb5096a3222fa5bf18cdc8dd1fc0c6ffebbc0e166d38347d6aa28954896. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HUMAG2012210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c85161b4151aac96c7dd074133994619b221ca66e06148920fd0e572379d8df. 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/HUMAG2012211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911056deafe733079fa0c7519a982c9be2e7f1bb8f17cd3c2a2648ac034dce62. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HUMAG2012212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03577fef614e6a38ae479907d1503b2e0856ecb96ed6651369c69440e21c6501. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HUMAG2012213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4254d89b6934bcc9c54c70cbf8bc92515eb147aae6f9ff3746072fa722cc79e3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HUMAG2012214.