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 0x864e67714987fefda1292eefb737a0f0af02b7cc8267347132a05c94a9adde5d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8403dcce-30a4-4a86-a7f7-cdd29562cd2a.json and https://artists.proofprofile.net/proofs/artist/8403dcce-30a4-4a86-a7f7-cdd29562cd2a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cumbia Astropical (La Cotorrisa - Anecdotario)
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 0xe7509652ea7366e30f76ec6c7e372bb01491ee67d11f585ecc74b9ce276d630f. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/US7VG1630175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8019e46a0c176f7bdd836e46b94cbfb966561e567c7c715156ac9d11e47b44ac. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US7VG1672652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25315777229db1a87dc920b4c6d5ce2adee1ac302a57c4feed6401222e63fd88. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:29:06Z), 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/QZ5AB1706735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba8da1882357fc157962ac3b820edac54e3787ca3d8aa244895b11db651398e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZ5AB1737308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d06206177c2d206cbaf3507e759f94b6e5bb779e14882222dbf12d5be811b5f. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZ5AB1804698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82d66e91d844526061360dd689d11da1331fc6612515701fdbe53aa58d3744f. 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/QZHZ61900457.
Abducción Amazonica, Lamento en la Selva
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8350f1f2f6bfdb4a6c4be2aff2b356a6ad325bc5d3f5300f71c3d3d28b00f963. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZGLM1921950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f35fb097774a2a8711163307528ac450dece1655763ebf3d0340cc6b1ddc91. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:22:48Z), 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/MX3742000576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e53682cf73dcfd3dafba9fb790f9097a82e7c1736124f8b9df387fcaa746c5f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/MX3742100431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30855e5ea352402b21dd32a87a30dc333d2c36d032c05ee39bf84889b298f0cf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MX3742100432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0d1c3a256f163093de201d915c43cff1b93b27eacfac02073953a2e3b365ff. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/MX3742100433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c2a77eae43381e00057b8ce067727cc9b013e778f17eeb4d4eee6a6d4a8ae8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/MX3742100434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ffd3557c16f379827e02ef8029e8d7ada56279ea610f8f98dfcb99412ebf636. 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/MX3742100435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa193988a039c4ec5c75d08705eeeb9aece9003d089ac98372855f05d3a07413f. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/USA2P2042108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030f59fcd3342e2f45b3386808259c01714072590e0091652ae69612767473e3. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/MX3742100436.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28268c40db687bbbc88f2759fda9eccf366b5f3ffe9ffe986d076129b0790d4a. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/MX3742100438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68bfedce96a2f394c0000a8e50c5e1b5875066e7869d6e06d762bcf34065e888. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/MX3742100439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ddf53c6ab5ff3141361c0fa3b97191976445d5d8f4f6f35bc97ce156e1d8c6. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/GBLFP2440744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165138ace1f2dcb843bf96d4f56da33bf23dfa62035984db46309794ef55916e. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:23:02Z), 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/QZW9L2422789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5811bbf6e4a8ab59c2899bd4e46bc829ccb96913651f908129ab58ec873151fa. 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/QZZ8A2530767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c723b8b725566859509042219550b904e9e34c2d4fa52fd6b0af994d0fc234. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GX53U2097091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc939ee467d7212eb440c6774eb3fbf64c6207c3be8f51b647686ba32a5e9002. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZ5AB2339531.