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 0x6cd4a63cd70d98806235f2e1d336f1be0bce0392c5de60f31f8d63d2dd7c61f2. 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/84ef7b2e-9da2-4ad3-9278-ec43a132d539.json and https://artists.proofprofile.net/proofs/artist/84ef7b2e-9da2-4ad3-9278-ec43a132d539.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 0x7c6b78d1e2b68e6ad2af2b3b4a8e3beefdb02a5aaf7dfa8fe1933769768077db. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/US7VG1766278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217c432d14300b85870489690cbc4c0120f300d19babde4d1eb5f91418baee07. 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/QZHZ32076530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe655804ce352494a0ff0940ef34e6ed850f88e3d5425328a4af0c1afe273973. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZNJW2354421.
El Hilo (feat. Elkin Robinson & Kombilesa Mí) - KOGIMAN Remix
KOGI SESSIONS, Vol. 1 (Cumbiana Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedca711afcd50686d70e315832e888cc4cc52db2f83c95d81b82e5ad19ea461e. 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/USSD12100122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd0766af8f815c4166b6174cf5ddf14a87d964efe2769880777d7f023167da1. 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/USSD12000080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2db8ad3f665dc38c3ae90b0f9276fdbf988070dc58246516606f6c4ec9ff2dc. 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/QM4TW1899645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a01a3693b72ad25989a17d9a327595dc2001385a78191f6f19fef81b38fb971. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US6QR2400024.
Cantará la historia - Canción colectiva por Palestina
Cantará la historia (Canción colectiva por Palestina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1498c53f93848719f0205514ccfbdba81f35e319249375b8e8c1dcd7da52ad8e. 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/QM6P42444799.
Déjame Quererte (feat. Cholo Valderrama, Cynthia Montaño, Elkin Robinson, Kombilesa Mí & Velo de Oza)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86c9466d559bee34e904738f31bf45ead11af248e2aa227b6ce3057835a8f5d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USSD11800373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b6776d2cddfd5ca56848c722a8f2a38f2f6783bfdf5202f9a52fb56f4e53eb. 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/QZHZ52140685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15d1aa3e3a32b6024963ddcca7c386e94d3f743d7514b16af1333da270e09c9. Chain 2 (Bitcoin): anchored in block 957057 (2026-07-07T15:21:38Z), 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/MXF151900045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15d1aa3e3a32b6024963ddcca7c386e94d3f743d7514b16af1333da270e09c9. 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/MXF151900045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeddba1f5c52b4c65bc73d70d4f0f21c55d60ee9299c6046e8571cad2f08a2a5. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZGLM2312933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63bc804f9169471835c2a99be869e7c81044fd634b270081c73e756efec4d23a. 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/ZZOPM2104425.
El Hilo (feat. Elkin Robinson, Wisin & Los Legendarios) - La Base Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14334b818d817c9a325c54c648e432c1e38f0df9865cb339ac478cad55201fe9. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/USSD12100123.
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
El Hilo (feat. Elkin Robinson & Noahmusyc) - Noahmusyc Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f84db9c2876c541f338aa1cae9f6e801dcbd96730cd90c7f007aed2e95c4c6. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/USSD12100131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750757f15faee81949dc61e210dc34443a806c80d09156e34d63cdbfd5b024bb. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QM4TX2346544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ed3e891b3b836af2905c857bfd0dc56b3c213e65ec9611dd6a5deb99cbe4f1. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/US7VG2113619.