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 0x2d89434970bcd10f98d78cd086ad79bd955b97501e4117cb519aa4a8fcd0b955. 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/e192c166-2d43-475f-97bc-ec1e1e999c28.json and https://artists.proofprofile.net/proofs/artist/e192c166-2d43-475f-97bc-ec1e1e999c28.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 0xc94f190833b1da0af5bde405fd52c246257d4c53236af86bb389645f2784e4ca. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAGG2240820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f3e9171a1080e372d06eaffd185720b5e7c1f3644672627f55c1f57aff65a0. 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/TCAGG2240839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a47905577e770f04e4ccbfb819bd208d9c442cb4544313d4a7df77b1fe6bcb. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAGG2240843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7ee7e10341a39fb5c56e1e0149ace11e82be9947388eaeb1ea2944b6e5950d. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCAGG2240850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08e8034f831acf34568b79ca7286e4719e7faacc2c1523bc0e3b2256166d394. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/TCAGG2240853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546d63501fb1194b31af5df02cdafb9e795a9d779a8d213a83e143cc61329648. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/TCAGG2240858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f521175c74c694c1cdf2167c6e33849d96b993bac20664c138ea2ea4b7a3db. 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/TCAGG2240864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb9475cae16bb347e745e99770b982940713c0e5ff81b52f227ff9d8cb37d9c. 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/TCAGG2240867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc483dbc1e30a92e08edca219e5b61c7d977688076a38c063f50f5cfe99d6e443. 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/TCAGG2240872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01bdcdf6571a5566b97f34d1d08e1354cd3788d6ed42b485a3314fcbcfd4575. 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/TCAGG2240875.
El Niño - feat. Eme Malafe, Los Pream, Mélissa Hié, Ophélia Hié, Joan as Police Woman, Marco Carrión & Alansito Vega
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46b0d79cdf6661514e0b5af65a91eb8529c1f3d09584da4f7236689faeea3fb. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GB5KW2500637.