Urko is a Basque male given name. Notable people with the name include: Urko Arroyo, Spanish footballer Urko Berrade, Spanish cyclist Urko González de Zárate, Spanish footballer Urko Izeta, Spanish f
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 0x5b72152c065807ace7299fc28cf69ba21c3d1bc6ab5e79301ac1d905354e9638. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/abbd88f0-6f2d-409b-a8c6-779d37329118.json and https://artists.proofprofile.net/proofs/artist/abbd88f0-6f2d-409b-a8c6-779d37329118.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sakonki Maite Zaitut Euskal-Herria (Remasterizado 2024)
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 0x31ccb805cb0c57940bb0a04a99286f3d5ba647f0a9c6c09886ed2110ef35029c. 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/ESA051600072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903030b54aca788c40dd48d12f5b1e737f2eeed7af9a27a58be9bbe34d650875. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/ESA051600105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f649a3eab7848f58a7cafa07e5490d6adab6d112f22a8ed97a6c2f1e477aafd. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ESA051600132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b612645373cbcdeaa56b7c526e5d97c59a7816603c4fbca22e58ab500a8262. 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/ESA051600121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab93b9942424b6ace6b194c7639dd81dda61e8b0890663ed5d796bf65a5cdc8. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/ESA051600140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4c36bdf8c2453bf3837b044e57911ab9f74798880fb2ec5240a52193cc820e. 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/ESA051600142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061a31706f72530c5b2b51897ff7cc3efd7ee662aa36caabd6dd77d50e1a1fc1. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/ESA051600143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7fdfd7a6660f8092b4f41b67f3e3a64f604c3ef924db969b4f4cb39440b2a7. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/ESA051600036.