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 0x3973abbd7716cee74bb66014522eb76c107f5edd5419b533013411e20ace4955. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e782aadc-b177-4764-973a-825bb6b79a4e.json and https://artists.proofprofile.net/proofs/artist/e782aadc-b177-4764-973a-825bb6b79a4e.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 0x983a7afb174b6a4267571dfd708c7f5e24dc4eb3976c57c6f113fd5f1eac8933. 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/QZPLS2474116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2db3b88bc261487a25eb151ba23cfc98449ff9b0992d3ef7fd98ba16195487. 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/QZPLS2474117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa642bc2c6b4b1cc39c243b30770c22fbcd3a082d137bc070655460c13f359e. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZPLS2474118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21a8fd0377a33d3d777e06348805bf19f61b4fb1bdb27fc5d6819a8dad5eda9. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZPLS2474119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef78b6092ca8be9f7e17ff25f7dc269bff4e8f6e1cb8ca2c8ba1950ea05ef5b. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZPLS2474120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab474542d84f73f288ac70a8cfdb0f125df0bb51b1159405694bb15abe628e08. 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/QZPLS2474121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd28385860cf5cf52bdc7808282f2793891a9f78c1b306452d0d199300c0edf. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:36:47Z), 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/QZPLS2474122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1a9b83b7c67f154e8b1d1fa14b32d81ece658a5b82439dcd9268f62566f9fd. 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/QZPLS2474123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378560795c5526aeed94105d198b279df69ed34dc3f2925af261f7dc3d025176. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:45:33Z), 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/QZPLS2474124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc0c6e687dca8a6d5df5adb2b9f9ea0826fd02528ff61dd101ec81bde70b35e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZPLS2474125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd165b8b382841faf7972ab36f1b6803eae3175141c3684a692eaa9a66d47892. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZPLS2474126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4018c356899f5c4f234c66d423467eceeba3a08af988e8975ebb9d9f9ad19c. 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/QZPLS2474127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc908da1180ee5f08c921e8e678c4478f90d203a1992449760314bf397434a49c. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZPLS2474128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca379db24be95565e86751a49cb3ba6230557e56aa17558e936528f3a7d07212. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZPLS2474129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe4a8371f139c96512f5534cf10db40f147389e24962ffd2491134f504f4af1. 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/QZPLS2474130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde08f635d1b42ea0848a974528b8ed471b1f11b341016413c3a6c7dfb15d9c28. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZPLS2474131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf65b4ff90c53215ef998ef83d1f9087d9203bbe525ab93d4d2bcf94d7d01915. 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/QZPLS2474132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d57b29f90f96313060a2df88fb3925aae58ed303ccfc41fde5c4516e3282787. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZPLS2474133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ab6fcb1110e33bc96aeac9350f4e3913e2447bfc3c725cbb5af2ba46e9f2c1. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZPLS2474134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197704f378d10fdd4f00d5b5e6c95b6791e504d59ced85c86cc69c48afee95bc. 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/QZPLS2474135.