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 0x6c09e8ab18a01b32f4f0994a35cbe79c222f703ce50928de70e2b4981eacf591. Chain 2 (Bitcoin): anchored in block 953714 (2026-06-15T00:43:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/867562f9-52e7-43d3-8ed8-22535e6b5c5e.json and https://artists.proofprofile.net/proofs/artist/867562f9-52e7-43d3-8ed8-22535e6b5c5e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Remixes Are Dead Part A (Mähtrasher Edition)
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 0x09837bb9ea70d97929061ec618799e558360f5ee91d7c70c0e45826468099777. 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/DEEN71500088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13423fecfd041fc38fa4143dc1ffbf26e69799fff4e44308ece9f7aff08dd84. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/DEEN71800041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb263a38c7da20e1d6da0c29f2fa5a5f13932cc0ef410769099b7a78246ed1811. 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/DEEN71800042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd358a7efb0431312e26005fdf071b7b37a0293fd1abd1b936507c832714132ce. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/DEEN71800068.
This Sounds Good but I Do Have Some Questions
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667f671f714274b189a610e1b8e5de3f33394a35206598d1a638e45e0338c56a. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/DEEN71900035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20cbda60f226a0f563618e15100e92d4b0e948124c1a71b8817d1566f859670b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEEN72000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b8969d1ff393926f89aec101425236edebecad603bd0e43473de5607a78e9f. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DEEN72000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd358a7efb0431312e26005fdf071b7b37a0293fd1abd1b936507c832714132ce. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEEN71800068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13423fecfd041fc38fa4143dc1ffbf26e69799fff4e44308ece9f7aff08dd84. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/DEEN71800041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac6e8caf5db70c47d7181789ad21c2488c8a93e1d06d4a067e09d08a3062c73. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEEN71900024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20cbda60f226a0f563618e15100e92d4b0e948124c1a71b8817d1566f859670b. 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/DEEN72000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9b711be1e4cd1597089abdaef2e13d70e72d478b6f8a716e77afc95cf3ca7a. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEEN72000047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378c39cbeb453d6133181abb5bb6b0eee338efe60d11eae125ca2b681e9e1207. 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/DEEN72000048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491436e97ad0ec34ba25ea6c787ef63b08d4390f5810ec5485ae2db3c282b5a1. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/CA5KR1513358.