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 0xf3a5212e9e169c84f8531a785269f2d2474663b0d53929de973b778a5b0e2d5b. 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/2aeb002b-2e10-4d50-bfd6-063f6d7e456e.json and https://artists.proofprofile.net/proofs/artist/2aeb002b-2e10-4d50-bfd6-063f6d7e456e.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 0xc91b73ae1a2933b768458eb752b762837007a200edcd7fa604bebedfc6dd37ab. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/QZFYW2127802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3b9a28001ccd17287ab803a1839cae0e1baa433042e0f19eb2b5296ef3f9f9. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/QZPLR2038630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbbdf0a3c5e5832240bc467574c2bb6656c5ceec359ccf379e10d6bbbce486ea. 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/QZDA42112553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213ac54b600b33684f69b5e1b8850063cdd8c54d669dab343b96a7f50ae99f1f. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QZTB32330122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090582a883b3c290198158f50fad1f06064bbdb7bdc8bf21d458425a4ec05b8e. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZTAT2309946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384c3a85cb5cf6250e45ad439bcec2a49003b21945bba6278c639d9d2cba0af1. 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/QZTB32330124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18fe7b8b028371b9a5cabb19fd639eec1b442c6014991824bccc7e1a5d4de467. 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/QZTB32330125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc8efe656674a60eaff636a62b62ba8a2814f4384b878e9ce8db8b53d87e67a. 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/QZTB32330127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775ffe572c2e87e33298a1be6d20a8973aa08be75ef70ebe69a86d19fef2739d. 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/QZTB32330128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59f535b131bebf5109ef051446669fa0c6a02ed111aa06e1f80167d91231311. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/QZTB32330130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502d00be518e1a93da4439ddeef23de11ea8953362e87de240fb8e2c240dc94a. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/QZTB32330131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aea5943de0a3a415329443059e1b474ac834ce60c6f45724d85740283c240ce. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/QZK6Q2155519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd9169b784c973bad3003670fa9a32cd211883f2912c4d3a425b3a786ef871c. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZNWZ2106627.
3 Raceways & Wario Stadium (from "Mario Kart 64") - Ska Cover
Skario Kart: A Ska Tribute to Mario Kart 64
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224679ecefabb4f7e39804e69e9807212af690bffd70041bcae62a2851ef2c11. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZPJ32127295.
Those Who Fight (from "Final Fantasy VII")
Limit Breaker: A Ska Tribute to Final Fantasy VII
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5f700683b8e85d0fe895f8109b5df1bdba2edafb746e2e971a3f5ea9ab7e5c. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZPJ32251109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fadb5f0aa5407c9506e1dafdf4466f6afc3ad1b2aa86585723fd243480a5574. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USCGJ2149945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd210d9de1c2a0286ad2d30702abde38f77b502ffa9d4446f5bea62ded04e7900. Chain 2 (Bitcoin): anchored in block 960303 (2026-07-30T20:11:13Z), 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/USH7N2400147.