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 0xa0dab35238e590ff9161f3b837a80d2ae65b45a88db8c70d2ee8b0a1e88737af. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa61e8ba-c1af-41e6-b5c4-3f1e39dbf8c8.json and https://artists.proofprofile.net/proofs/artist/fa61e8ba-c1af-41e6-b5c4-3f1e39dbf8c8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La Caña (feat. Hector Guerra, Patricio Hidalgo & Ramon Gutierrez)
El Cascabel (feat. Los Cojolited & Asdru Sierra Of Ozomatli)
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 0x91833ed4d33e337e87702f84c9e3f3e4a8d16624bff9a0a747c41b35e14bca30. 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/TCABQ1382044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b82884b68b2364c7f831503871dcdaa962538508cc96ad9110b7271a4819f1. 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/TCABQ1382049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d662539692273fc7658978aa97149a2c158dd2200d7f38705386fda8189ade0. 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/TCABQ1382053.
Capitan (feat. Asdru Sierra Of Ozomatli)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9223387ae0bd8fc8dc10c6a5b85ed32306e7591c754a488a6d0faf3957b79c. 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/TCABQ1382062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32e9039c28b54cda90471779bb9efa132008e1b52e39145179c0ef07a63d1a2. 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/TCABQ1382067.
Luna Mas Negra (feat. Noe Gonzales Of Los Cojolites)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa469da7572d5b3d6f6574c9c2517050b3bfc3f522509a3c145dc0b035cf553. 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/TCABQ1382072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a20727420822371600eb652de77cb1e724e610e83988cbddb2872b1c0f83e56. 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/TCABQ1382074.
El Convite (feat. Liche Oseguera, Roco Pachukote & Moyenei)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5557d15b69520ca70c9651e93f4e82fcac175beaa505f4a777c4b8af988dfcbe. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/TCABQ1382057.
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 0xaed5667940dfc3dfb9123cd2b1aaea909b7acfd5c8854def1c8cf1180bd6bbf2. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZNJW2399176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b6adae24402cc69fa7ba685469943003332f68c9545158917838fe1797073e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZGLS2449551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb77fe1e2cfb3c7750370edd159db8813cb647df94f57879d3504dc8eb15624. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZGLS2449552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7ff4b6ebe9fa00469b057e9c46eb0b579bae3954a751a913d2a854d7e5ec30. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/QZGLS2449553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c10bbe3965a05d6c62b9b24506e5751316c461de3d673915afd097ed8d25829. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZGLS2449555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05b99677280ac770e57fb40aa9424f7c6e3a3e664516a7801702758473e16b3. 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/QZGLS2449556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2eba6feacee97a109b22c1fe451ffbcd41f9aadd238139b840a31b3f94584a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZGLS2449557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a5de216a5711fcc4f607f08bbad558a1d6c20c4af9e9f1838148c6a57b9dad. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZGLS2449549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd99a3d45f2d3d47fa7543642053fca72f1c54cedfd33063e1603a4091e8da3. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/QZGLS2449550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6652e3a880c73d23f5f274f4ef65fe6929d8ab630aab821b9f6e344ebce498. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/QZGLS2449554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef411988fa593c7b50dc985903f27dde47fe2110c948e3531459a546955d4127. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZGLS2449558.