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 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 0x83e7ae5b44513d1a1676720431fd9c134a74198da37ba20a8a96ccb7e1253305. 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/f3c0d243-f84c-4935-b5c7-b89718913db8.json and https://artists.proofprofile.net/proofs/artist/f3c0d243-f84c-4935-b5c7-b89718913db8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Chamamé / Polca Correntina / Vals Criollo / Valseado
Rancherita De Navidad / Faltan 5 Pa' Las 12 / Motivo De Nochebuena / Navidad Feliz
Paraje Quebrachito / Ofrenda Correntina / Fogón Del Norte / Mi Tobiano Patas Blancas
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 0x276c38981fb8a46484473f71a392c8fe45fe32a6eba3f5374e3ff64cbdb64bf3. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QM6MZ1459685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530dc038540a61a771bc5747cc7c991f22e4d13d4c5e499a76454c3ae88bcbd8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6MZ1459611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487af5e9daaca6b18e7afe5e9774e602516ff2897e7ce4ddaafa8c7cc8261c93. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QM6MZ1459612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0590ae3c2f0a329760ff27412ca2766a8d145bb25a299125560a755438fa1a72. 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/QM6MZ1459613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32051919be3d563f7ab67af5d6536e504d8b2bfc9d9200ff16f8d22cda068cdf. 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/QM6MZ1459614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28972d19a899558e7460ac7b280902f3d17f71efa819b40c8796cf3b9cd89428. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QM6MZ1459615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c1559f68a4cbc47122249498f8404af3dcde87cc3e2d1cb293e7a5abbf057a. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QM6MZ1459616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14cded7eae37d982c745806e4d6023cbdfc37879726b0a10a47de8411f2bc5e4. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/QM6MZ1459617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8a3037d920fd047928fe6cdcc0e4289312f1ce3a8bd73521e1d230d555c64b. 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/QM6MZ1459618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83058acf655e3135114f1e7d98a3581b8f3d2edf6eb25ebd332d165769a741b0. 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/QM6MZ1459619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c33ef996aece6a273550451ab77fe3851778bb324dcfa4611ed0b07875b0fee. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/QM6MZ1459620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x439a628e106e6a24d9042b2ffeda580ed1443a6b4597584c393f8ba94ac4315c. 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/QM6MZ1459621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ee00afcdb8b4911de3ea24ce29abea937244382a91c33dfa3f126aacc1a8ec. 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/QM6MZ1459622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c37bacbfbdc31476a70312526e698220043ec7401116b1679e2a4484969c2a6. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QM6MZ1459623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43585b93c3a23fc45d5cf3428208fb11ae8cac0e6aa9deee3c7746f914305254. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/ARF050300479.