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 0xf758c9a89775770d45fe194ac7b09f9db7d07d3b15fd643454a4b9fb08cb5e18. 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/a9c54362-684a-4321-804f-57692e5d70bb.json and https://artists.proofprofile.net/proofs/artist/a9c54362-684a-4321-804f-57692e5d70bb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cuti y Roberto en Vivo 25 Años Con el Folklore
100 chacareras de mi autoría cantadas por mí - VOLUMEN 1
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 0x4b53b01ab32661b0f2c232517aecefb84dba1f7091f9c984a3eb12e46076a6a5. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/ART562300009.
100 chacareras de mi autoría cantadas por mí - VOLUMEN 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0bbd4de7733fc4575880e18a094202e8267a1aa1e04ec7b71a9956504ab31ce. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ART562300032.
100 chacareras de mi autoría cantadas por mí - Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254ceeca332bd9bc9ee491d9af3ad653f6802987fcae77502a07cde97ad6e09d. 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/ARF050500851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a2c5e8eb13584b066fea68d67ae77914b592b42ff585c83effab2f08498ca8. 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/ARF050500858.
Entre a Mi Pago Sin Golpear (En Vivo) (with Cuti Carabajal & Roberto Carabajal)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf717eb9d6b75db05366bb678788e25cfcb84bcab4f19cde901eb65d8401d3194. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ARF101600344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4924b0d84037bf2bac06c7793d2611e679044d916cbeebcc387748f2669139c. 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/GBLFP1847421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e5f88b61512748a99ceb256da16e74eccd2a1df323c27e7801d420099278e1. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/ARZ911200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25cf88b7d90a3b4e7f8617969a84734a6cd9ec81046a94e491a601c6e54c2591. 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/ARZ911200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc2e41c70a87c9ef46621e79a06ef846913a50d7a1d36ce63de74f30df3870b. 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/ARZ911200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621e4362d1e0bafbd1af841df859394182749b374b4f808ca807c99f8b3c14ab. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/ARF860700535.
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 0xbce1453fd9856a91ec386bf130204e44a6d9ba72b57bfdd0ce3664609db55bf8. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/ARF050500848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5526903a0f86cc5779308c43186dc69811beda39008843f807537b502db32597. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ARF050500854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6925e2e7d34215934c018d219d27346beba61660150bb4cd672b177c9740b5ef. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/ART720510452.