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 0x37e02775d31e6053cda5c434db42f06b15b3c8c5b0aff0806aa6d36a4daeb0cb. 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/3a4f8027-38c2-4283-ae44-366c323ae30c.json and https://artists.proofprofile.net/proofs/artist/3a4f8027-38c2-4283-ae44-366c323ae30c.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 0xe85823ff5cc4304f278f247dde40a3fe8e76cde0a448dd2553b8da0f310eea97. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFZ62148870.
Prelude (Virgilio Chant) [Liszt's Dante Symphony]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087847bf8b7eeda3c411603ddab973b54d0341ae68fd3224e6ad68cf59fdb391. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZFZ62170395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3f1d922f543307a9cffe62552b9b01ce456e249b303d1ad318405b45ff441a. 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/QZHN42172835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3895d20081bbe597ba7a8ee26fdf48c3d6a07737d12121f739b0fe826a59f786. 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/QZHN42172840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbef1472211d6b128d79a83a6608bea530913533109e89fa8d319e5b252b72ba. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZHN42172843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea0cd976db9eeeeec8dd950774287ac55d3afb86110a470d2f797916bf941b6. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZNWT2199872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878d2e7db37b8ba17a6eb72fa23b8e9608db4b748e3735a968fc0ce2890cab95. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZK6J2211015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49488458aad6e4f2d833c87b843f168fd422ce69218a5bfd295b02362b00756f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZK6J2211019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe09dc54c8329567473efaa408999e04fe5fd89224762d4634203b570cae868. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZK6J2211021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1965a0a3fadaef55f1856a213820bc1accaf3b841028115fdcc77ded019f8c. 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/QZK6J2211023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4a36ccbb47db741d215c274e10b4355bfba081c61b592598af9971393d323f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:41:19Z), 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/QZES52168225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe711ce4b3cdcc2cb050690d0c16fa6f9b9ca6b8160d49af6c3668667bb6c9ba6. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZMEN2269747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ff3dc71484dd59d773d708403438cf2f47704b7264207957c0181ef1e17896. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZMEN2269749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7485c42ed5dcd09ab2c7c7ad2f8119845559ff869e45169be8414fee3bef10ed. 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/QZMEN2269751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd9c4f8105063c4ebb14f4f2194958fd1d07d73a9919cd3f582361a476d27b9. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZMEN2269754.
Sugar Mommy ¡Qué rico pasaporte se te ve en el pantalón!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29c965c19317d793ace6f27fc8e7602811b2faee1443708cfa7e2615c1b3a67. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZFZ72462251.
La música de Johanne Sacreblu (Banda sonora original de la película)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3916726f908b6b789fc7ec5c785c958e7227439140d05e8324befb66428d053. 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/QZK6K2552616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1249db5ac4a3ba8ed96e7acc5a3b827272f037459e44322405d13c39ee95780. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZK6K2552620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b9f37f75710b09ce69339361303dce51306966b63bbcf24d7e277ac5749cc5. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCAJX2532131.