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 0x795b1a2b43c1120dd0ac82e3a0e1b32ceb9c5994dd7283271ee0b41a014b3230. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e18315b1-16f8-40d4-b6b8-8b77eac2e800.json and https://artists.proofprofile.net/proofs/artist/e18315b1-16f8-40d4-b6b8-8b77eac2e800.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nuevas Canciones para los Actos de la Escuela
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 0x0992915154f3c89bf641ffb7ba52b45f5c4948f525f05f85991a3e7f26ef1f04. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T21:01:37Z), 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/USL4Q1710294.
Nuevas Canciones para Los Actos del Jardín
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81b67d5dd7884810f86528dc1735c046b90593127c01dde352036135da4c347. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USL4Q1710660.
Nuevas Canciones para los Actos del Colegio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b992c5740a0f407a403878d9a2c8cd1ca34f3658c8bde019c6ce51af8bafb2. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T22:58:11Z), 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/USL4Q1708010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8264b46a8c515df2595c4edc0fe02c544d1588802bb2f10d752542d6d0e0f2a. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/USL4Q1708011.
Otras Nuevas Canciones para los Actos de la Escuela
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195361a8d3e8cad378e4c1db6949c84265189c4c6129d10e7fb3b4fab6022ba6. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/USL4Q1711437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a305d1555fe93af77faf181e39827e968df267022e9fa0e9e20ad11eb465d83. 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/USL4Q1711442.