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 0x9af9037d6440304c7a0ce6da8d6532dcc471cd5b73c6c16771fede1908ed95c5. 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/a5a0e24d-d848-4971-9172-feb2ad09b2cb.json and https://artists.proofprofile.net/proofs/artist/a5a0e24d-d848-4971-9172-feb2ad09b2cb.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 0xe505a77d9ae5f26949f9a1a362ad9b342443717c2c2621b6ea3ea33a187c9f77. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:09:17Z), 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/US7VG2393721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37dfe4a0769764ec1d8bb7c3a23c63a0b7ac59847c37e6c45650b5d7171e3a3b. 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/QZ5AB2369375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82359a0052ad01aeebc1cf8ba7953ac4209b564f20100bc61641d536a6e119ee. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:57:22Z), 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/QZGLS2498444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea84427e968a887ceaa0c9fd22f2d8188f3d883078ab776dc78a890a6cff2b3d. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QZNJZ2422063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8852fa419c2ef09fffd97aa73b366613dd69bbf0b5148e32fee400c478d5d3. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZW9M2443318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476288b3ba63e661f8ae2e44674a64cbf362a5b3c83a69784b293b916395f076. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZGLM2517550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2188bd9a7a7577560d9c0663ec52512899f58b7339075d15a78f2d5c1218100. 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/QM4TW2342651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b8cdd56073cb1d4fbcd4979632a5772068bcb09b243450192e4a05c03aff14. 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/QM4TW2342652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cbcaf7c1b0b69687f81aba7a2880be2983b14e09ac1048361c899c76cc35010. 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/QM4TW2342653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e0825e334bc2c06c5638273983453c3f1236802182c6ebc4fcd881697e996f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QM4TW2342656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77fc2abb2811d785db701438bfd4c1b5710d91db9a9de5f8966d23540ba8a29f. 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/QM4TW2342657.
Popurrí: La Yaquesita / La Playa - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad15a8074d375fe324a5e36d713864693a24656e30c3bd1194605fb623ed9c0a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QM4TW2342659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09fbae762a111e0ce69dd08f4d840e7fcf7f5ba30b4811e53e5c47bed905b04d. 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/USE7D2400159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b314e4df3564ad31dae11a0dfbff458c45efd13cebe1ca83b4fcde5a2946471. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USE7D2400164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607cf59845cc43a92d48f66027b9b98a6e885122085b67cfc98ad04f19c5e9b6. 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/USE7D2400165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1189b9739b19f29b6c7061aa87850d2c337afab79707d94722621ce12737517d. 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/USE7D2400167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b41a9687e8878dea9a4bd729cd63471f7906ae57b496fba958e90c825b75dcf. 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/USE7D2400168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8080319ad89a2c53fad71049f3e0165f811ca02aa25fabf95e03917aa3bc26ce. 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/USE7D2400169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289a846f8603fd065961cea5669b839b168d5d9c924d07f61e2c431cd3b255e4. 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/USE7D2400170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd835423e9c3247cf71515a3a21118de9715c3b3b78e33cb2c7fe3e413550e90. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/QM4TW2342655.
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 0x642312f5142a08c6a9678486383d528096ce01bbac2c60f140f98f9fe0f62a57. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/QM4TW2342654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6f82cf61d4db1518cfd9f0ded7752081f0716c39e7e36e3997c9d8a578e8b8. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QM4TW2342658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2630e1d497a1a8b2f735b6d8f11608e987b7962ebfadd7ce3a8a35b5c02641. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QM4TW2342660.
Ezequiel Coronado - En Vivo [Bonus Track]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9522aeaf0888695df2aefadb4a34b07c446648c06f060c43183a4e82adc06dd. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/QM4TW2342661.