Arto may refer to: People In the arts Arto Halonen (born 1964), Finnish documentary filmmaker Arto Järvelä (born 1964), Finnish fiddler and composer Arto Lindsay (born 1953), American musician Art
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 0x37806483155e0dde07fe5f70b1b0198e9fb5f02bdb3985c1f4c1d467c3ff5a7f. 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/954f9070-9505-410b-93f2-787a4e1c191f.json and https://artists.proofprofile.net/proofs/artist/954f9070-9505-410b-93f2-787a4e1c191f.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 0x2f5bd2e107d73652ef5afca3c0588acc99a8205e3a38bba05cbb0f7d41961769. 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/NLF712206659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db542f706916cdb17e826e0bf941dec083c2eee1012236d7759c29a52990367. 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/NLF712304304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7aa6c0dadec80153f0a8bea263d3dce845a1ca2936b1f572e48986b4406ffb6. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/NLF712400108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0526384198621ea7e792a6dd35057c379a603028902e87f4379aabb383821f9. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/NLF712408297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd11260e694262825c528238c15f095e9170bcf9cf6ac06003d48603b9a7fbd. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/NLF712301406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190c981db1ac75ed2079fd11128523a5b6ba110b4aaff4381e2f2f7ccd5d1d26. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/NLF712307847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d886eeaaa11a76172fe7980c6a331ce89e6395b5199c5672cf811186462fd11. 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/NLF712301405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede176f82ab90616195439062ac1cb8518bec291760d9b4683ed88dc4ce7aebb. 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/NLF712303247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403ed8b4a3e93f278fec51f90d9a5a18e2c2f0fe386d17cf51786451699d9165. 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/NLF712206658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40a1a8f81682066675fe89d7190ebd4d750d05f7c29806e71f3eff196c94e65. 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/NLF712304303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d505e0b7a527a53db088e21feb8c34f6327442eb744cdfde102a97c602eb3a3. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T05:20:29Z), 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/NLF712307031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2f67331764cc78cb3626f5800fcf2978b4c45134568ada2d0b1a86a0452384. 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/NLF712401021.
Chill Executive Officer (CEO), Vol. 20 [Selected by Maykel Piron]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403ed8b4a3e93f278fec51f90d9a5a18e2c2f0fe386d17cf51786451699d9165. 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/NLF712206658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59cee91afa9812aa8d607f6b4dfe19d9bb7ebf6d28786678bf91f04aa92e67a6. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/NLF712409411.