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 0x2160da6e1cb04b4e803e4590be7c5105aea3cff27cce1b99f803c67b5622095d. 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/67914799-0953-448c-b992-ade15488fbae.json and https://artists.proofprofile.net/proofs/artist/67914799-0953-448c-b992-ade15488fbae.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sorry 4 the Sploosh (Chop Not Slop Remix)
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 0x84c5a5924a95c61475ba814c810d8cd4680b37809d2452f8d2b58723342d1842. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZMZ92555801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6e175ee00a974de0d0f19406b9d52adb968ce9adbe40d699dddce5d04426a0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZMZ92555802.
Take Risk & Prosper (Chop Not Slop Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82093d6b2b43ecdf4e1d13c6dee3513d754167ead48f300767b98bb7df5a2ce. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZMZ92555803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c3d47857b90e1f81c9dfbb6b79c164b334d8faca23c2bba72297428f000894. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZMZ92555804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b732d458e81deaf9fd458c03b390e61293d4b9c1e5f70ccfbe09349658210ea. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/QZMZ92555805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb663bc8603a9358eaa03ff21a7df1e0a863d78085361ca5937688f549611102. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZMZ92555806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9af46be1cc8033dfb18382d6bfa5cbfd71ff91e02c479ba13a98f7acffeae5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZMZ92555807.
Spindles Nights Freestyle (Chop Not Slop Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf98f77e3890b26bcdae6bd8a3b2b6f95503096e8c0eb80bfa3a9de919a92d6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZMZ92555808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a1bde4686d086416233133045e0afa6954119bad0b844d3739fe6edfbc783c. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/QZMZ92555810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5cb9cbdf93f3bf493d2b246fb9b738b0dde08ec16882a84aed6d3609505317. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/QZMZ92555811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f6ff656abbb830e7dbcfde04deb27ffe9f97acd68be7395a3ea98ecb13a0ef. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZMZ92555813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13311a67879ffc39b7cc27828d6a92427f5afa201eb25efdb02fdbe9127a390c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZMZ92555818.