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 0xe1d5c182b74e45bf03f2841be18db743370b94d141544c990358c6caa80eaa97. 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/bb76fbe6-993b-46ad-9efe-2548d1097797.json and https://artists.proofprofile.net/proofs/artist/bb76fbe6-993b-46ad-9efe-2548d1097797.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 0x1bbfbe6cb5a9590e8ebd1e232e5730624f13d20672b97f194336393bb237c2f3. 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/AUMEV2392194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb1fa5188027694de93955539b9a4f1515914e2ee48ae1b4ba96c7a9011a18c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/AUGBT2319688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4ab71cadc6d5e64a9761f2b8098f1708af10bc668845a94d54dc5eef5b79c8. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/AUGBT2319726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ac966cbdaeffb66cd0476cbd17fe41a9d6100e21909d6756580f9c6e8e4787. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:17:51Z), 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/AUMEV2401603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79df9288995594fe6d0c1df25ae7641c2fc1b677dd3987f4be9198fa3c9f0844. 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/AUMEV2401605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177ef514b84e03a9dbb4ce7dc795e8514789c55d2a27d21ba0e63a1753d88431. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/AUMEV2401608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5cf6116dd915db54e58284ab2ffe31699792ceb9c7805b8eb9beeb620f2760. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/AUMEV2401612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbfedf33fcd19b0dbcefdc7e136f68e3853a4a96adb97d79375e8d9b46f4dabc. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/AUMEV2413837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78179e3ce35f5295cc1ac9048eba77820e036fa2f7759faefc6e15fc786877c3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/AUMEV2413838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e53fd01c3686933fe62d1ece6b226a28e1edc17e95191e81744722acc14071e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CA5KR2446535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13661ff708521f452abe210bf20ee1587dac3ae3e23644746ca83322aa5c7d00. 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/CA5KR2520101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5d5616d2479f0105e54b147a82ca319eb85af38e1ab539e48f525e5e5e51b9. 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/AUMEV2378309.