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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29df13e4c51c79aedc080f244913bacc76b7f4406f3fcbf214059c5d00fa7265. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/501c2a2f-6baa-4b50-81f9-2aa0d337cc26.json and https://artists.proofprofile.net/proofs/artist/501c2a2f-6baa-4b50-81f9-2aa0d337cc26.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Betis: Canticos De La Grada V1 2ª edición
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f14d2e3b57d09fec07c202e21b1ffbfb5cf0c361e1a9a975cab731ff6640c9b. 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/GBSMU2127849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72fad4012ee7c32ab2edc9f444105b1833b6c6e15f080846f1f54a522a4224b4. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/GBSMU2127850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16651c9221451f2ff0eef722e073104ef0a631d7a5dbd2684220ae6f58416265. 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/GBSMU2127851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4305acfb1d03cc0bbef9b5a00c0ff9c31ffc12f5466c221e6ed97d3778ed01dc. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/GBSMU2127852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b9ee041bbf09071249344e82302cf485bd295c23932fc3a736a40268dc3eec. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:07:53Z), 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/GBSMU2127860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5b6c3e1c4534fad07d8e900a7333068a1e2203795f33a28c3a656b7b37fb2d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:56:17Z), 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/GBSMU2127862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a18667cfc1d352a7514fb89c92dd9d19ec964253ca8963b7567d421dad773c1. 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/GBSMU2127871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad837b8c331ef550cf062a7b4a237e3eb6e5d68f8743bde8ba4b9adf3ceb7098. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GBSMU2127879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e63e658146699d899ec38b1af2cbf242546a0b1772e08318d81c18237026249. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBSMU2127892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4c23a9f60d05c692ee97e5130c522188d4a64a6a32faa756d79d94801b6624. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/GBSMU2127909.