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 0x32563f9bcbe64f829e1ead9d7269edbe459d2ef0531a2eec571ece35452bbba8. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/44c609aa-7608-42b4-ba52-2b4e2fc42f0e.json and https://artists.proofprofile.net/proofs/artist/44c609aa-7608-42b4-ba52-2b4e2fc42f0e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
El Llanto de Janet Guadalupe (Te Extrano Papa)
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 0xf557b4cfed00ffd527a18326aa581defd85287b8f10fbc1a8f34b2466c5062f8. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/TCACT1660048.
De Los Angeles California A Los Angeles Puebla
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb384364e76a0fa3a75349799b12231dbc403299c23ce7b219d0d22b32e991d11. 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/QM6DC1707002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a17948059294db9f0f8e998a95d1ec994b363518f4c4055edd9dce9d6780bff. 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/QM6DC1707004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642c3f56490d17ccb34346c9a6a2d8fa360017a8f837bf35ec57f9aba028e426. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:21:55Z), 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/QM6DC1707005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb461327de544f3d9b1ecebefae053736b2ba79812e397e75f997c9861577f8c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:15:30Z), 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/QM6DC1707006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1dc39064e4d33016a632f37a0700ed7b2e5d56411acc32cfd133bd7bfdb9e6. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QM6DC1707009.
De Los Ángeles California a Los Angeles Puebla
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc659faa9c8010ec463c9101528d4f5220ba27d8da82485d3d2d3742e23b9719e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QM6DC1698914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b02c10aa607707b14941c32001832d57a7367b9766e01d2b2b6b79e78c963c7. 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/QZNJW2169073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00922383e78f845e7efe2b0e217c1c0b6f8a0977054fcb7a9061aa8361d21a1. 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/QZNJW2153388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca194c426cdd90ec8a7375f33b66c20d3977eb43f551b413d68c94a4d9ed59f. 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/QZNJW2153389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c03643aab99402a1c567fecffbc87363c03752904be47ebad8f7c5d459d46e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNJW2177139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfa223fe98484dbf507e69db265accf1274bcdb0dd8a5d2e37ce1e9a3529bd3. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZNJY2147309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb39841e5fa51bdbb2ad748db8f5d4d6fe541dcfa05ff47c47b5c5a7aab8079. 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/QZW9L2351922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e598d779af59bc0267353cd04159da48b620e73f738dbbfece0b562df39ec38. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZGLS2514576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9434565a7a95e3a1829c3ed6b7bc3bd158b9e846b4ea67c69d076d966d1d85. 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/QMHUY1453200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030f2dcb03b689275f27588ec61c28d7d4f491ce846e3230fdad3d5b45bf2732. 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/QMHUY1453198.