Algar may refer to: Places Algar, Cádiz, a city in Andalusia, Spain Algar, India, a settlement in Uttara Kannada district, Karnataka, India Algar de Mesa, a municipality in the province of Guadalajar
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 0x22c42472ab528b8001a49ca6f32bead6eeedc564a98923d40ff85a07cfdeb799. 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/cf290d35-e0cf-4d7f-b037-8da15efa1773.json and https://artists.proofprofile.net/proofs/artist/cf290d35-e0cf-4d7f-b037-8da15efa1773.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 0x162f4d070bc81f4a8a9db03417cbfcf86bc357de9bfdbb510c82b4a5e4f7c900. 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/SEYOK1113376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8b9c922cfa93f9892deafd4d9d2f2a444191681f46d5177a664d09d87b3d7e. 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/SEYOK1113377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469ee33c79432b79dd04dd9da6a14808522b97e21e3cd8e4c3bd9157f29f8526. 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/SEYOK1126414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00eb0b7ed102d240730145e648eb0a0b25238ff5c804d70206f9f18afbb4320. 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/SEYOK1225848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c5a48b19d3cc38f03a01d7cd7ca4c1bf92f12984a1cfda33931e4204b0b822. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/SEYOK1225849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64efc4839ae4c5237872b17f8add8ba6700fd1e532449e274112e425c52eb849. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/SEYOK1225850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9634a64cb96df79d224259b2999ce751756ea739d1fc96bb82110f9f46f84ec0. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/SEYOK1225851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f83c88f0b5ca4ad9f37938733b5a78a0f3b88a3df987afbdfb8877407a609f. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/SEYOK1225852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42117a9edc67251cdff22251e18b7e5243e69c02c8bb8276999dc73e1aa45888. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/SEYOK1225853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9aff320514033f1a65c0a387fd2e6057bbed5c129d6af101040f22c114e6f10. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/SEYOK1225854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9114735b09e92ea5f066e0cbf8c78c877714053d4bdb353e4b53c2f57ab18645. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/SEYOK1225857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ca5d878c704b8d9fe2c2920b14c632da0eb39270fb0ff14b1eb7012b5b943f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SEYOK1507209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d548f18d84a2dd70301264e14ab00b6d02d598862af11d1aa20291424479c53. 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/SEYOK1507214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1774b2205afc670b76389cb6db41006fb8f700dab9877e70dcf1d5d6ded5735a. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/SEYOK1665533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17c8d1ec82489218cb790eccaa11ae63665865061ae4208250adf0c994e85b3. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/SEYOK1858123.