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 0x0e1815ca5b6102ea82e930ed7f6ea5c098fd5fb0cb841ec7b2dd3323d217d9c4. 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/1e5adc68-f0d5-4d64-8f6f-ea52f061a70f.json and https://artists.proofprofile.net/proofs/artist/1e5adc68-f0d5-4d64-8f6f-ea52f061a70f.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 0x5243042442d27a747cf0527c17eba66fdd59de14327f6d97fc148596c183b462. 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/USHM91998099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad197fc49bab47675f23374c63f5da2398a11027457935dcf627100986f101a. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/USHM91998100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f941921f08b0c2817dafb8af2af5f817ba6c36652529e72b258c6988aac8548. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/USCGH2084344.
Recopilación de Taquiraris de Comparsas 2019, Volumen 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f6fa3758fb42b37b4f3ad495cb8f3889624ef70b170af101af622d75e20ff3. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/USHM81959816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2cbb2b79d5ec2fda4b2898d38db3decdd217b20baed33b4709c2d5082ccba2. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/USHM81959817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f66fcffd34f8c4fd092c247446ab1c0ce22b34f1a9ed690ed887fda5993bc9e. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T01:01:00Z), 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/USHM81959818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80656bd594162867278be5a6153d1144aacebaa362e7aee0baa30ac0d0add720. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/USHM81959819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60922a16d2c69bd7e898705eaa7a28d099f39d1d075249be2f5a6c2a223d216a. 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/USHM81959820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0199cfb667362b245678742bf25fffd71b327673c45771330b34f64e976fa424. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:42:02Z), 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/USHM81959821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6f2f611f9b1574502ec30f1dbb5ecf99d65de4f8e52fd8f32c953fed369ed7. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:47:02Z), 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/USHM81959823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14dfe233c58322087924e34b2b3c086b6d2b6d6aa17f035cb3f7d0468f3e29d. 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/USHM81959825.
Recopilación de Taquiraris de Comparsas 2019, Volumen 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd033d325b9ab07ed0c3d575e0f4caccda13a4e0ff66767538da88e9c78b90090. 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/USHM81959775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f82e8c989174a7c3d940bf8f6a5c77a336887ee863095b750b6bbc1544bcdc. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/USHM81959792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1daac77c93fc38ffa7fd547e890df96e49590f7a52ecf0e0694a95f1d2791b8. 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/USHM81959798.
Recopilación de Taquiraris de Comparsas 2019, Vol. 1
Recopilación de Taquiraris de Comparsas 2019, Vol. 2
Fabio Zambrana y Banda Intercontinental Poopó (en Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a536ce15582ff24227a7e95663a9a59625b9182851c5e8fcf546f614799e8f5. 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/QZNWY2019219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a2ac6225de0c63fdd5fbd0801a2fb0b218dfdf1ab6143c264bd003956edf0f. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZTPX2307985.
Recopilación de Taquiraris de Comparsas 2019, Volumen 3