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 0x4ada3292d8727becbbcd1ec818775cba18932071e2983f9940a3ee18c4c86347. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/01e36e0a-12fb-4d17-8c19-d913be49b3e2.json and https://artists.proofprofile.net/proofs/artist/01e36e0a-12fb-4d17-8c19-d913be49b3e2.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 0xb25f4361270f1abbd7d5f6dc6d82be7a9fca57a6e5b649f72f81be6873ca1957. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZDA72250275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e2205875625c288f857365df047ad036975d433f242439f15b750b92335d28. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZDA52291719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0853dce69f0eb911e6266e725203099c3be003713292f50717282ada45fb2880. 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/QZDA52291722.
Somos Scala / El Sentimiento del Pueblo / Los Sabanales
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b14c133f30734c435e4c843099b01f9a251e77ac70fa35e35eed31bd0001d5. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:34:38Z), 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/QZES52231046.
Más Exitos / Fiesta Tropical / Ritmo de Cumbia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127f24a87858446bbbfb5356dac1d8aa96280f2548453bf081f387dfb6685d2a. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/QZHN92238639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ac7e658584897a86b2581a4ec497c84287e856043fd3daa0f18ff35272fc89. 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/QZHN92238641.
Inmortales de la Cumbia / Puro Sentimiento / Cumbias Rancheras
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3013aaff1732d17a28993c55edf02e49f786fe9f7a07b257ccc2f4c3d3a2e3. 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/QZES62294756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9901a185ee9d0ed3ce9c89a1191677437a15aef90e21687a45b63d310cf061ee. 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/QZES62294759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b8d08249e1115eacdc44a1d9926c0d361b2d87865ee665f81e6beee63c8356. 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/QZES62294765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8bffee078177556e9856bf31ca656b59d5700d89cecaaba7a2f1e225bcdc54. 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/QZES62294767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3ff81f3783a32d089a0f703f141d44760b31e1fb50cbbffbc8b543d61180c0. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/QZES62294770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5665f13558e9b608226363540808535a4f661bdcf0f222aa4788efdd824e1e3b. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:28:21Z), 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/QZES62294772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310a2797532d1c42e8090c7f150d75bc82060db6ce8528e2d289d1dbaa0adb6e. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QZES62294780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e365d3302451223d3f35ce12dac899983f77be73b167ddd3bcadf06fa99bdb. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/QZES62294781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac63710c0890ed7e6f654b16b6c0ad401641699e14a591416485f4997cd5e2c. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:42:40Z), 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/QZES62294783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3dbffc01a01607909d9ddab438df5321b25ec79a41b838e210de77b18fed60f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZES62294784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd012cf3d26a938e0d4a61dfe315df62aa9f9f45936c2d779b4c1084cca15a1. 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/QZES62294788.