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 0xe65f49ea3b0830289e0645f02d3c7bcc186a4e31542b452eade356a9a8523a0a. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/22e2fc63-dc01-475a-a398-64614092fcc4.json and https://artists.proofprofile.net/proofs/artist/22e2fc63-dc01-475a-a398-64614092fcc4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x860acfed204d7535df39506ca6d6c15aa9b130ef5a5abb11733ebaea63470617. 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/SE6XY2508498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7aa3e6ba76fc0a0f0be2e47f554025348f88e5b7ba8597c4ee014681d21eb5. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:54:20Z), 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/SE6XX2535323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860acfed204d7535df39506ca6d6c15aa9b130ef5a5abb11733ebaea63470617. 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/SE6XY2508498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed27bc7b438ea7fe3a6f830d424a311b502039ac631937182b11254afaf9d924. 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/SE6XX2535324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224f597d809a12b0b8edb571b38175f57cbc48778b705118653552c403e7c7a7. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/SE6XX2535325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e66a54448714732a3fd5b0e87c849e65b2fa402af3670482739f2762769266c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZDA72569053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579c334222777b1bcf1cff8cb8ae61ae2aff94e23423b368371862ad7a32ae04. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:51:45Z), 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/SE6XX2535326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e966eef931e6e77e1fb7947cebe5944f2a585b678203cc7e5f40580a1ea6a1. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:54:29Z), 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/SE6XX2535327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fea1ff7773d8c37216dc02ffe9e10496d894d445d371aa7b5244290ae5a5d6. 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/SE6XX2535328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df8f66e39d3a742016089dd25ab05da892b6b5729ea6f4cfcfce9ea824050a6. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/SE6XX2535329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5ff4bcf902b24019e2e4d7a85ddc17896c7cb665662fdbbe90db30d2e28376. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SE6XX2535330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f075f220909da54832fa4893f33f3ddef69cec3c7d70b8d19cc6b1787e7acd2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SE6XX2535331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018048d955c7d1a0691bd67e6aac7b9e53239e338520c43491c3d3a77c8e26dc. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/SE6XX2535332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e5db4a75bddc1bf235d6f18bfba3ea2bc10ed6bc9b65834ced3434205b8c6f. 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/SE6XX2535334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5411d1bbe24a010e091645df123125bb10b7bfa86dddd655126f3137abd812. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/SE6XX2535335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c5697a0f59ba714e8c4645a826f180eff578fafee4c02557202213223d0f23. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/SE6XX2535336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bacc8b1e3a68f296f4fec66c2a88efda9bdf6e65b9818c3fc6df0b029f2a8ad. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/SE6XX2535337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29868a980df63424895b899c397e9b146c0be7cce3463c9cb9f115757057a768. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/SE6XW2539292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bbc6714b2f7148d093ea2349d5245b1c49a3ed0a893413fea3514e1cd82eed0. 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/SE6SA2538571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4f1b4e921a63a6586d221dd9ae746fbe4d2d3754ae77bf6acc493cac7094eb. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:04:07Z), 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/SE6QE2502897.