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 0xc572f7aa86fd2bee317a126145e4e873a20a71394ba1e2cba37a514bb2e97395. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/842d7135-945a-4120-a49b-a098f222bf10.json and https://artists.proofprofile.net/proofs/artist/842d7135-945a-4120-a49b-a098f222bf10.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Abundio Boracio (En Vivo Desde Servando ZL)
Las Hazañas del P14 (En Vivo Desde Servando ZL)
El de la Lima (En Vivo Desde Servando ZL)
El Compa Sebas (En Vivo Desde Servando ZL)
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 0xeed159c484a1320e0b20f01dacf60f17051fc609d821ba7472a2e05bd1056693. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZDQH2267426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70858dce1e7fd417006531aba906015468b9f1168686c8bcb2bf875d6a9fc7ec. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZDQH2269191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022f568a7a73432bac357a42549bac28f0977d74836e360163687edc91f71b99. Chain 2 (Bitcoin): anchored in block 960230 (2026-07-30T08:32:18Z), 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/QZDQH2350551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b41af67ab992014b454b32fabeb21541793b5c0d5d864ac9dfa6e4a69b76599. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZDQH2350552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f55caf690c7883a35c64c7b6693b54977a1654af8f8a249b0e5e81006b97bf. 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/QZDQH2350553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa2c700371a212ac6e0285994f426b4129ad3dda3294328d734ae47540ec66b. 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/QZDQH2350554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32008cc75c6593f8ad886a7d6c6cbf75606831e415f0d79a577028209829f5b. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/QZDQH2350555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9213b508040944a0e8e0537f96f79ece06eedc9da70b1dd5dc59cc7e07b6df90. 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/QZDQH2350556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9969a2ef528c29dcb0e39004d8cf97be9bf6dd7688a6c9b1df26919e179023ae. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZDQH2350557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b10a67f42681f3901b5c713d6fc0c74cf7fd44e243663a988f7a3f2f96abfed. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZDQH2350558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12370dc4338f928f0a5915ca188c0b8d35f51237edeccd2965a7be512caa9561. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QZDQH2350559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f246c0f5fc507cc9ac3c13c0a68e2bb716f3c61e7baff3d9800662561bc792. 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/QZDQH2350560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4030e171b935afa0811d4e3bdb4c5674d3f4902bd527ddf75fca2d8ebc2a789f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZDQH2360898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd04c0c710045caab0ddb68d63ecbb418d21930d71369ba071961a2faca8694. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZDQH2385063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0632dbcd8a91603febe51cf1213cff9c3ce0a61aa38756bfa21ecf365a59c1b. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QMANG2257306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655a1770d116e4f576b76106d0d0c60e1c6db6f1a2c0fb14b13f33ce94ad2400. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZDQH2396711.
En Vivo Volumen 3, Puras de la vieja escuela
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900b13952e6498ea8a9b356848b749bbf4d74109c98d3dec769c9550c50922d2. 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/QZDQH2442596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1619917edfdff99f3a9c59f31d72e3ec10bbd845d2ba1ed3676aeddd501c2ad3. 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/QZDQH2444400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5382cfa7193f9d81e350b8ac10db2e44ca104a9a7356fbb1bcc8aefa9801064. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZDQH2531207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20c91240c95ec6bffbe8d918c4b707d6169a2f9a14ca58734e98c9c5c3deff9. 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/QZQMB2107174.