Alta Velocidad Española (AVE) is a high-speed rail service operated by Renfe, the Spanish State railway company. The first AVE service was inaugurated in 1992, with the introduction of the first Spani
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 0x4754536395b11479ee08e066207f28103f8b6243cb1a080c5ff7935e52885e21. 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/a9888cfd-488f-4c72-b84d-0f0720daab05.json and https://artists.proofprofile.net/proofs/artist/a9888cfd-488f-4c72-b84d-0f0720daab05.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 0xd801c0468248ecb1d50db384304aa13126bbe3d1be530580fe8d3a39754950d9. Chain 2 (Bitcoin): anchored in block 957540 (2026-07-11T08:19:50Z), 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/USATJ1104503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba9e373b131e2a5990bc5c390212c28c11698f0ad8d470e577d10e20e8bd3a3. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/USATJ1104506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441bfc20fb3757885b5953834e8771af1b73941682b3e6d25d856d35f5ffec83. 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/USATJ1306102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd7ae7c25578278b88a544dc95a4712958bd57ce8b6e30c0db06faf7deccefe. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USATJ1306103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14918ac35e68dee9217188cf09afc3fb6a692dcdfd73b26e84df49531dbc4d4. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/USATJ1306105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd702c28ea8980207ae215dfc28eb315cab996b3b6b625e1b248e84b0335bc4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USATJ1306107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852094b9dfc067da1571992a0efe967960eb7f0add56d1d6c191315481155a69. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/USATJ1306108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5259f74438d26d25c80d17375786f55a03ea327878b48f0c6108b1ad1a197d0e. 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/USATJ1306109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005d5df3fd6dada445dd1ee7d3b6c63de260e912b0de3e9b0392de7cfaf4e421. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/USATJ1306110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1076a4b10740df8c14eb9463c38231b2b0379248b9a20fe56846c6b08de359. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USATJ1306111.