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 0x386e57c1c4bca01b4960c783a94d32667f6301fa994e34ed5521ae20380c4f48. 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/1cc4ef46-8e87-4f90-8cf8-4669e9f34cd4.json and https://artists.proofprofile.net/proofs/artist/1cc4ef46-8e87-4f90-8cf8-4669e9f34cd4.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01888bdd64b047f8f26066a6cc4d7675e849323664f121254ca89e0fc4c86560. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZMEN2180945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970dd1ecb47749000698f5a7283d4b8995ca74a7e544bf074067e6bf2ce50e6b. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZMEN2180946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c5a153699c0d4eac383b57f81105fda8e710a04b97776b0c2dc13c56f082e0. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:30:52Z), 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/QZMEN2180954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823d3a5946b5c6a7167bbb954eb1c181af09fbec357d8c872e2f6a49235f560e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZDA82083477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1c5fd28c30ed2682a1897b7fbab8a30676b9d9eca49af6a1e129c88482a212. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZDA82083488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c60ada5e2e8c40aab5567984cb254cf6d321467bb818ae908e4e90072a8c4f3. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZFZ52123526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee29b7616c7599a58098f5df5390f62864c179adf0a903ba725e508b5077d81. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QZFZ52123527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cdd428bd1c578bec727bb70d2aa7096471fdd83a5a287022473698d83911c3a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZFZ52123528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4de48fe37ae6cb5813935f4d204f1fe636ffda4ed4eca8c1c564d0a62a65211. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZFZ52123529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e615575e5dbd26cddf565b77c55e394e48d7abd38ea0a763c2968c63da4da50. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZFZ52123530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5911030a3dd85ea58277b6334058530039011bb179b95d65ad9fe36882e9ca97. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZFZ52123531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77832dffe42b146de5ade8b4593f87b6751aaf9c6cdb77ca887aa2bb65a2f757. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:54:56Z), 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/QZFZ52123532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed5b3d0808d979df49044b25c59f944b1e7079741474c16d59d74cfbc3ed438. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZFZ52123533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c03e02a3e71d7ed9147fe6e7146045a0dd92983d7ca5fb2d95e14d898b70e5. 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/QZFZ52123534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90af87cbc0cbfd340a535bd4be928384b5f702807c6eb75efa8a79440836f6c9. 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/QZFZ52123536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52cd647496190a9584102b2ae72179f6a71c66f2f80869fba13f063924a59eb6. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/QZFZ52123538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59a6fe388d01f3f1d00a6aa29aff6d0d4f92dff3d14a862859fdf0fefda14c0. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZFZ52123539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7131c8a91f6de04de6a55bb0879c908aeba917ce88a1c7de12bef78c2915efbc. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZFZ52123541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2bfedf215175cec4c0662772919e7cec4a83dd59c5dd3be1e8f82477aefe82. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZFZ52123543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761043564c3e3296c98d58ca0c9352f83e0f22bb9a2d6c6f014a8b70f7ea4336. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZFZ52123545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156847d1cd63013eaba698eafc9ebbf551f99d4cb9398e32a962ce7414ae668b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZK6N2283418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6ec247a1f5a39faa06dfaaaf15b4c4bf7c7327ec4c8c29d885a3239ec2cfe7. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZK6N2283419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6088e34f5d99f426d18c81f6868dcdada300e52b7432b9745d9a36dce3ad6c77. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZK6N2283420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d13d311e593a0671bf30350ee40475709f9e64487f941b8d8aad0f5987e02d. 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/QZK6N2283424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbffd9e622ce8ccfe9401b70b2a027c5bf0cdbfdfa45ef6115498b0c5bc9442e3. 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/QZDA72449112.
Estudiantina Sauñe (Concierto ayacucho en vivo 2025) [En vivo]
Mix Barrio Piñonate, Dos Cervezas (en vivo concierto Ayacucho) - En vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f40e427546e038abd7db9daf4b40b3f145977ec463e91bb4999f9c36e2178d5. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZTBC2570324.