Harold may refer to: People Harold (given name), including a list of people and fictional characters with the name Harold (surname), surname in the English language András Arató, known in meme c
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 0x4704d6e7c778b13a18923fd590637e10fd60ba5f40c18b1b0e86b1d7f03249dc. 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/444011a8-9ff0-45b9-bf8e-081092159baa.json and https://artists.proofprofile.net/proofs/artist/444011a8-9ff0-45b9-bf8e-081092159baa.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 0xc8696809825d2c9576908b38133a3dac36177389e798eb8d24dcb9716ebaf859. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/PT7ED1600219.
Última Cruzada (feat. Mundo Segundo, Papillon, Batoré & DJ X-Acto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b445ae4f6a85e7d40328da104ab370001b7e2ace0b15cb72dedcfdeffbc63c2. 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/PT7ED1600227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b437689d9efe3714f883cb5c94af9ffb678b3e51496ca0ace274e620e9fcec. 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/PTUM71900250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7788b4b1d63c61efcff1f08b641d6bd2996450880a67e12f2e9a6e8cbdee6293. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/PTUM71900255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e85002f7ae10e1c6cdc1a40a64528087766a876aee83d6e42355aa55c61615d. 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/PTUM72100363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb721c52789e111c68fcc99eec2be89d05b5d71016779e04c235b22ec1ea8544. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/PT2DY2100145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22673c72d9be9c651797aac12e1415aed8f5c59c1c956bd645e54b2a867b622. 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/PT2DY2100165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d6bedf55ab028987f69d5fe529c7cfd04c51b2bba6356d9f2bd40f06623549. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/PT2DY2100252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56621572c9133b8d4a0f42b171211abc2c884d8388c19cda13773c87a65c37ba. 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/PT2NA2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963d69062079a79af6dd7e9929a6dbf8cc39c5436f2a66cca12607d2e26f71ee. 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/PT2NA2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e90391440a0ff45bc5cf3ed8f459221a8c85bdea11077b9ac8bb97bf70e51d3. 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/PTBM12400116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08417fc39b416078e1da74dd9fd6f4b6769d9efcb9facfe17785a374552bc7ee. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/PTBM12500073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d4d24d707dbc233690a4211132e8be4b6b5147ddc078a8be79466701f81978. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZMEN2392195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c61f96308cf598943195180c66073c87d50f7399a81cf40da7988a3b9cc9851. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/ES71G2102374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36bc8b9d292da94ca94178181d3cd6d1538653adcd780293f766656bd4c526fd. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/ES71G2127284.