1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xc9167862218c99ad83720d63a37b8cb5bd655f5fdd9d4d921d9bb2a2e2bf2cf3. 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/8d38620a-bc9d-4ab0-b3cd-680d1fbcf3e8.json and https://artists.proofprofile.net/proofs/artist/8d38620a-bc9d-4ab0-b3cd-680d1fbcf3e8.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 → block OTSBitcoinBlock must exist at that height 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 0x97e6ea452a7a4346315cdd2db405a7ec92824fc3b9373bc08129963697c8a552. 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/CLA1D2400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888d16cae14160ed91a059859f04be313f612e2f2f06d44c79e546b248f319d3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZ5AB2465464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08cc516ce5586201ad7b24a83081d057ddc5d5b16a08e41d6dd0acb621321bc6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM4TW2376714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d8ec46e0fe08a5e6caa80e1b52045ddace56801cb6698b6beadca487912a97. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6MZ2385171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d33bd7897596100f86c48830aceb965b11ee2ce5e6575405926fbd162f519d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM7282484232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaea1c1392fa01489cc32db0d9083f8efc5c1864d71a0def0d573165acf4fae8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM7282493553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e1ca0a02caeb0e9ec683eaca775c8eb8aafe5b8ad6a96f12e39e635b2c2b52. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM7282493556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9b2d4454755a691c6a8db1e885b116ad69428e52b19681c537c970bda001b9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM7282493563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794c176b718b0b615931ef835652f050bca2b2fa1fc2daca3accddb6d860354d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM7282493575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0e65941fe57ee9116e2cfdf81f2c4b6770ee62dc2208ae320554894a29b656. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM7282493579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65bed96fed9adc13de69fb39f016c96e3e33f45a0f20e6e5616a52996c91ffa1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM7282493583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2954da7737d5fa1f081697101597ee984cc70a02702837cbe1e7399471836428. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM7282493584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e170b9347b598f9210bfaa8039dd358eb23e1ce13f54fce8ce59965eda98b66. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM7282493632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae48a7762c7faf53306b21340711506ccbdc9c7273d480d924a7e06fd33aa3eb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM4TX2448116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6e61ee1aaac7df59a5a0180252360989dec1ea9dce961a98608f14ee203ecf. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM7282493645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb2615ac58a3d1e0d37bfb32f0cca45b340297bf33044edd590546e7c7cb7d6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMFME2486112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0af641e8ffa6abfb7d224469c3e4a635bb5e0ae81518a66b7242c66bb3aa55. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZZ7T2402026.