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 0x3b43d7d62ee8139dd3ea716d9f740e62f4b9f41f678dbc25db9520dcfe0b68c1. Chain 2 (Bitcoin): anchored in block 953733 (2026-06-15T03:12:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/96abaa18-f921-4064-96f4-b04e53de3b10.json and https://artists.proofprofile.net/proofs/artist/96abaa18-f921-4064-96f4-b04e53de3b10.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb908d97153cade50e818b202ad6ce4733f4f5d97d6e1157a079ca63f25544a. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:39:37Z), 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/SE6TI2185992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65729bc46f70c0455c944478e7a59d3f8d1492eedef0f396aa233331426ee397. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/SE6TI2185993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1eff47bc5bf57fd11a7c6ec481d5bef7312187564f4f99e8655d305c1cae2a. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:05:50Z), 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/SE6TI2185994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5422cb1275e9f06c84a5cd5853371fc4a187c4b9c07b8a00f686cba54bd282. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SE6TI2185996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa51f527b43f696cc1948d13ec772bd70d6837c3d101e3e9142c5addbab99a2. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SE6TI2185998.
Las Mejores Cumbias (2021 Remastered version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f51ba7f967c827cceb38bd4efc9ce6ad835f25426454076eb4ab990a9fbad1f. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/SE6XW2109583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d6e98dbc691569a7a2cdce94f00f35d105baeaed777ef4ea508912abf7a775. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SE6XW2109584.
El Sol de Cada Dia - 2021 Remastered version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8d55a13ac600a6e5db3b32eb5f540475300e032a66e38fe8e755e4918c3720. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:28:17Z), 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/SE6XW2109587.
Cumbia a Caldera - 2021 Remastered version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e2364c3da9c2050b1409a2e008c52706ebd5fbfc2e064f01c204a4a768a732. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:55:30Z), 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/SE6XW2109593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45280f556311039c038051f24f57f96b1e9c91c7d5a148791aa4ee7c41ae1891. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/SE6I32334391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6222ac7e3c6fe6739f3d1090e3e2cdd2c4a2dc05989a10748f75fe0abcd5d62c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SE6I32334392.