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 0xb3d858b18970019396871a7b707b5133cca13d4590cc54225d6ec7c7b2f98455. 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/f1a8d4d7-82cb-4836-b1ff-e4abe6042806.json and https://artists.proofprofile.net/proofs/artist/f1a8d4d7-82cb-4836-b1ff-e4abe6042806.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 0xfa0cd2d2d2b6b6646550d58eb070c4686cd849cf04627b081da46c387cec1535. 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/QZK6K2000388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd15a67d26f007f3828216a1360201f826c330f95ae082382a16831625481db. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZNWW2089195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9311245184e149eb71ea2b24f79da4f500a4d778305f679b87456ae20e1a38d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZK6Q2210694.
Gary DLC EP (Non-Existent Video Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe350a2c1c5e43cd547f02f82259bcd7f99b9c452bf7b30131f08468415e36c4b. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:19:09Z), 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/QZHNC2573459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe350a2c1c5e43cd547f02f82259bcd7f99b9c452bf7b30131f08468415e36c4b. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZHNC2573459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a3a86357e84783dde5c6e9bb97865f9359a3468f9a4a51ad339335e1c96ef3. 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/QZK6N2513079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684275dacb433179c9afa36224bafe4ce60ff7258a1a891290424ab59e00bdf7. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZK6N2513080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5584b7ebee194cb42f86e602d14507506d57a4e7223d4f901653aad580532b. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZHN72551960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e9959de9579444cb10c18472a378307c323e1569759f2eab3d9b2eb895d6d1. 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/QZK6N2513082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b335cb92fab433d7a1991406541ce02d1362f3276b13e96f523fa33764ad91a. 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/QZK6N2513083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4558a59bb2c205250e9c4abd6ab6025f660f290d102ba56997883a13624687. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZK6N2513084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bbbdda37299106d9e17805620d2a56455daf9b3111e5ec4bfb88f2b0f7783fb. 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/QZK6N2513085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aca41d6fd9921b1bfbeff6db4f2e7ea4b47f19db8b8121e9ad82b21a6c2909e. 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/QZK6N2513086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434d90fc59a77224df1ec55b489266dc75750ba5101aa7045c93d8ffadc027e7. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZK6N2513087.