1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x4df9bce0533c10f07f98b5e2c6b16db726004c5374ce047857c110a03f19ceb6. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d076adfe-edfc-4d14-b24b-1dedf4cc97c3.json and https://artists.proofprofile.net/proofs/artist/d076adfe-edfc-4d14-b24b-1dedf4cc97c3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Salvador Allende en la Universidad de Guadalajara Mexico
Salvador Allende en el Congreso de México
Salvador Allende en Moscú - Universidad Lomonosov
Tonada y Sajuriana de las Tareas Sociles
Sappiamo de Essere Sfruttati (Prima Parte)
Cancion de la Propiedad Social y Privada
Sappiamo de Essere Sfruttati (Seconda Parte)
Vals de la Aprofondizacion de la Democracia
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 → block OTSBitcoinBlock must exist at that height 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 0x9083c99bfdc703a61d6bccd828f0247686b05ed6c405dc517257f6d581dbd0e1. 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/DE1A32127727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8cf70b75830c8fb4f46080f671a625fd1baf8d7853947fdb863b0d23677687. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DE1A32127728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cbe994c06c3c5717b650eb87da31914d7096a21cb666b680b7997a2705c5a1f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DE1A32127731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5382cc74af07028b975fdfe70c565e86c8f777150688e9a0d8477b6834898df6. 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/DE1A32127735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe205a95eb8ba38f6d5e31d3860102bb22222b67d74a6bba31dcd35ef2d8aa2b8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DE1A32127736.
El Pueblo Unido Jamás Será Vencido - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b3ebbe4a1855aa743daaa7d56277ce65b482a3b2b410591d635f617de116fa. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DE1A32127738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327b175ba20c4a2bac458d491c9c7f5793472eb5fb7a6525b153f1930c27d06d. 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/DE1A32127741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79272f87832890e01276a593a958f1056f6056f88aaedb0e9e22a36b7dc1f882. 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/DE1A32127745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2ff4eed2aafc734a8f0b048724281f5049cfcf0b085c237f28944c4f6e2e1d. 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/DE1A32127747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9125d5ac9ecd47aad1fd8be5f467c78dbb2fca3fb2c9e5f8dc410d3275c2225. 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/DE1A32127748.
Las Últimas Palabras de Salvador Allende (11 Septiembre 1973)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b526ebb67703ede97a755766243d1d8cb6f0d095747cf3d5c82206b707a996. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DE1A32127750.
Las Últimas Palabras de Salvador Allende
¡Venceremos! (Homenaje a Salvador Allende)
Segunda Intervención de Salvador Allende
Las últimas palabras - 11 septembre 1973
¡Venceremos! - Hommage à Salvador Allende
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1334d2b6656a54a6ddea29346a1ce57ff432b32f8cb65d1ae0d8e0d714f20f. 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/FRZ831139305.
The Roots of Resistance: Selected Highlights from the Freedom Archives, Vol. 1