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 0x64d845c3065b7384d564476a2ab890a5dd0582ecf042eb250d43e5b7b9980dbc. 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/fc251e54-2187-4b87-8047-a1ec9b58d903.json and https://artists.proofprofile.net/proofs/artist/fc251e54-2187-4b87-8047-a1ec9b58d903.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 0x639fa543aabc9cfd37e0b1d5ae7cd202593316bacbabb01c2316b2fc84da5a34. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NOEPG2413040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeda13840fbdbe834966c4f57ddde395396363c19ad38e79656109090f1718c9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NOEPG2413100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665507bc406e38cac6c6fb2db48e8dfc94dc522d3737d477905a5c7b83c59dfd. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZTBD2385712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2bc30a4b0589c694d855148de91c1fe4253080f1d7d72b3aaffa8cffc9e0e11. 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/QZPLS2377168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ded56038b5953687fbc3b4a38e510dc2bcbc60b39bccdd2e9122b9b709bf95. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZDA82295415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe982efee32a5878ec75fe2a55d3e61c5d76c0b3fd3b8f8e4f1c84fa8589c4667. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-21T19:03:09Z), 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/QZDA82295417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd915fbcc7bd00d083d258504cd18ee12168f1e43c1f6258193c07c18449869e4. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/QZDA82295416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfbab9e2084ec2a8b5ff132c6bd7c4cfaaa2919af19fdd0614b5119d11b7e09. 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/QZMEN2195460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760f6656b6a6c0dacb9ed49dba87b4feaee8471f65e62a2a5ad58509ac39c98b. 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/QZDA52267307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d7b6c58a0a243d80141d38635b1ed5acba38a62b94d1c8504ad261b0fff353. 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/NOLEH1913010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535e76e52f0b564b3921b711901379112c5873edd5c5ee71af5fd6f8858a5e8a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCADN1838476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721104f0b789e157dfb2d2301b542e4df31caf9d526e14ec80334031fe29b649. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/QZ4JJ1954926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16942c64fa59069965a2d09105a3d782d660a27488396212f4cdd690c0f07f8. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/QZ4JJ1954927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df717d2ba0f8d3f9dacc4b33cd84472b534fd60b7766c3ec5aeddf94e22ce6d. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/TCADH1720302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6bbef43d85effe0dbd5d1174ef2eeec6ff6d1e7c26639fee63b8a825e68d8b. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/QZ4JJ1954928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b97439c5a07bae3d40f9c18505b9de17a9458d4cc2bedd0edb2f5896d5b7c75. 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/NOCTN1823010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2f9a22048515550bec16923c6e679d55b89252826869b72f69c8ab5b59a49b. 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/QZTB72439020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab07e4afdd8eac4e7d43ec567795fae1c10d22ec2d54db2f6aaeb1ec9efcb92. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T17:11:14Z), 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/NOPRR2004010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b64ffc392243ac3993bb718aab6f3172c68955c39f19a97520554851ac7687. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/NOPRR2005100.