Calles is a municipality in the comarca of Los Serranos in the Valencian Community, Spain. See also Sierra de Utiel List of municipalities in Valencia References Category:Municipalities in the Pro
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 0xa64c59acae7dc715f7febb0dc585904efed956e2ff58ecd71e03f6a9f8689053. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/46200e73-93d5-4e78-8dad-6b90afb0b718.json and https://artists.proofprofile.net/proofs/artist/46200e73-93d5-4e78-8dad-6b90afb0b718.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 0x84a925166cddfaac2eaa16314e97141d7044d2bf3d0865af6ee8642608b38887. 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/QZHN92314704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2d86cce23374cadec5866e2fb20482f5325c8cc3c1854f33ef99b26b9859b6. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZTAZ2368341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe971b74d71f9e3ebf98b75cd81a2c5484a3b4ef1fbc76cd06db89bd1c3583d40. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/QZNWQ2417995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd725969e8cf1fc7777973dc94832b6a3914af07cb58ffd5f8d3b6492f3742fbb. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZNWQ2420391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8bcda80753ace0892215fcf1d60e6da4edde16aa702ccf53f207f878aa1c95. 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/QZPLR2421246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4d0b04cf629d169e6fcb0bfcf73237a18dee5c7df0de21a0832adfc5c248bc. 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/QZTBD2486735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76cb96f74d6c185822c7283cd9c52a16b55b2afc94cd256716af28bf5ee5309f. 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/QZWFK2478617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4e568e5298a32703716942f4e9512c407048ff934909630e94845854370c74. 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/QZWFL2472817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950594408f5832847c072f0fb34c244f3ca9627474103c18e4d3ff98176d92ed. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZFZ42501428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e1138202770ed1c44b46bc551a8173f08044b6c750a6803bda825a568fa53c. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QZFZ32521496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b1bd4f59210d1afaa766f943a10bbc0021cd204dd3ea7ea6db5acbb83cf61a. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZNWS2533361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf869c59b239e3493e63a7a3963af1752fc5b7c0cf2a766b626e8eba249798d7d. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZZ7M2572082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c8c336dc24a6098910a0bacf67aa42d94e8a7ea9242e794c491804d80ae1ba. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZZ7M2575063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20728a2d883195ed3576114c447085500b7c2a2e804b9de67f240caca539c24a. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QT3EX2549048.