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 0xd9ceb897df8d3fd65d8de5b65f148bc35e30396eb624e8c2e25c4b04b00a36f7. 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/d6d2e92d-6248-4ec0-803f-70d144c0c828.json and https://artists.proofprofile.net/proofs/artist/d6d2e92d-6248-4ec0-803f-70d144c0c828.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
El Camino del Ermitaño (Cutv Live Sessions, Vol. 6)
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 0xa5ec0918dee3136a12c9baf0b93f1a8953fc9affed672dbd7c8e03757bd5db3b. 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/QZ5AB2052609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953417735f2825074d92a340890e6c203fb73a7a2688d366162d86d2e7643aed. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZ5AB1726036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38bc3bc5d68c7b145b635ee1745a29c99b5a4884c0883358fd6e03107a6d7bb8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZ5AB1831531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa38d3f5002d63b3e0bb139a7c1ce59213dfbf4001b59ddb886e21a517bd63d. 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/QZ5AB1831532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f222cef059c4b276f08606f849b98f8b8ada9d4f3f5aaf75e2a2801e87a54cb. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZ5AB1831536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9eeb06f195daf773dbe024d8c7a28fd322dfca1121072af3f45ccf98042b15c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZ5AB1831537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d12bf92f1eaf036a05e93aab05ca2dbf2928d3112234f2317a561fd4a88095. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:33:05Z), 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/QZ5AB1801611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ae7d3b4a0bfa4a5e3a668884fff9bcc56e787e21c07842e78afb40d0532dfc. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:26:15Z), 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/QZ5AB1801613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2132a75031e0417c77bde7711c31e72aec7035a81666be30209106a6e2f7e9. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZ5AB1801615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf384ad50ab105d36e6fa64bab945b559d168187486514a0ba770580ddb102290. 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/QZ5AB2050085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694d3d76322bcc76d4ddfdb8639566c5295065e56dbafdb47c149de2bb3b93a5. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:33:19Z), 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/QZHZ51952267.
Cuando Vuelvas Tarde (Mambos Live Session)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4d95aa99e5bf2239cbfe0917fa1d1d086bc760c33210fedded23bd145037c8. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZGLM2033250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52d586de85f3a5a474b40d49b97c79ca698f7691d2aa0298116d2531e6e66ce. 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/QZGLM2033253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5917337b37a8d9777f0e379e6dcbe561edf88e824ce41f02706e26d2681f8d97. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T23:00:10Z), 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/QZGLM2033256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52eb7e6afb6ac0713a908db9fc69e408420d0bb5226024c453a882aec04e439. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZGLM2033261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae154dd4165e1c6bbf548522062a709e06ab7d544bcd7e47cf5089ab2b92af7. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/QZGLM2033262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc78792acced7a63235dfe3fc66b3c2ecac8b93cf215924affdf61d049804353. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:38:15Z), 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/USX9P2071395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199c8e76a57933610edc84593bbb326c476898fc879d827be4100276a3cef6a3. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:29:59Z), 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/QZNJW2178959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dafc69971f4691d6c3c3c48d541aaa07a95b98c7825536eac88fb9263216fb3. 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/QZGLM2379647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e5c5ac2b3f597ce68d946c3808bb1e2a5597bfb6dfe71f666e15bb90029722. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/QZGLM2379648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0cc66fcd7b799b69d765335ea6eedc72ff0549bfe5e4290913f020a3990049c. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZGLS2319383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4dc59cf0ff3018258f5172e416ea0be58ede40de7363a6fd329850d2246787. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US7VG2047780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1e477aaa41550d5c6f99562704c2312cdf88095a2e4aba8cbaf736eed4361f. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QZGLM1973923.
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