Juan y Junior was a Spanish musical duo that was active between 1967 and 1969.Vanita Fair (Spanish) "Juan y Junior duo musica aniversario por que separacion" (April 21, 2019) Its members were the Span
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 0x695247325e4cba55440e4ba374f0d8d706b6d3fd55ae1de7090c3b3c58036c11. 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/64592775-19f7-43ec-beda-ba467884bc3a.json and https://artists.proofprofile.net/proofs/artist/64592775-19f7-43ec-beda-ba467884bc3a.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 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 0xfd7b3d91c3689ccd44ea71e74d004641fc5234848e176bb0849238a126adff92. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ES5106800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e79cae3159c980f97a3a9934cc77b0c9984ffa0a48ff51f02199bcc5463a1f9. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/ES5106900076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23bd04962a26cdbc52abbb4ad7bd955f0cf5c1d97945468fca9134046f2e39d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ES5106700053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67cc950995a565e2c35edc371efda9c452a00fedef02f2c03c067e8ee895de83. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ES5106900077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664df1705a99b9c936a235cdd6d2991aacda682a5a0f6c1fef2ddea45c10f7a9. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ES5106800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0087e5cbaaab90c59bd4fcf8c474996b55bf75a01d00c49fbb622ce1125664e4. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/ES5106700055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e91a2399623702e0910812ab59ec29c969c7cce2f7a94a7f2b5c458a48f8ce2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ES5106700050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998a3c584553d4517b55f4e067968267f69a597e243b1bde0d4bf1e7a654e1be. 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/ES5106700051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f1ef67a533dfd5959d69e2cd0ffc179839da07f512651a3332ce66d9006905. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/ES5106800026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e79cae3159c980f97a3a9934cc77b0c9984ffa0a48ff51f02199bcc5463a1f9. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/ES5106900076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e91a2399623702e0910812ab59ec29c969c7cce2f7a94a7f2b5c458a48f8ce2. 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/ES5106700050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7b3d91c3689ccd44ea71e74d004641fc5234848e176bb0849238a126adff92. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/ES5106800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1538e0bc346ad3a4b44562be8108fe2b043de5301bef8e328d828312b4e79503. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/ES5106800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f1ef67a533dfd5959d69e2cd0ffc179839da07f512651a3332ce66d9006905. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/ES5106800026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1538e0bc346ad3a4b44562be8108fe2b043de5301bef8e328d828312b4e79503. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/ES5106800025.