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 0xd1d52f43c20d6eab3505256dc9a8bc3d41631c7232e4e56651b6778b32c3f16c. 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/aed7b783-360b-4bc0-aa96-38b42c160a95.json and https://artists.proofprofile.net/proofs/artist/aed7b783-360b-4bc0-aa96-38b42c160a95.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 0x4c6ae792c6a59a1dfd153121f380291cf24e27b937eb91c1aa68dd47586ba127. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/DEZL42305477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46592d0fcfa71629ea57401cb552c2410b7abf2123a17ac0c29cbaaaec7f23b4. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DEZL42305482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae52a2ddcc2f8b26c24d2b8c1387d974d15ac3bc6411b71a4f845c22d5712cd. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:53:33Z), 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/DEZL42305737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff6bb5a6d00829dfa2a57e6b576bdc43d2d19395cf048da53524e535f64120a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DEZL42306034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4baf93e416aae97c56243f54250568546050d3fd0e6e31ce4f736f9629b3da92. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/DEZL42306040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f73a60795a4fc2f9fee8d2e977bf1ec58a465f1836f9c0e2f56c88ddbc617f. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/DEZL42306043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1bf46ca9a8e4bdc3bda4c8e39ab90a8f424c160723af761d6972ae3c4206ab. 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/DEZL42307025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8b8ae49e7e2b7b7313d2cbfd43c16f393b98d48609220ab3e7d98330065b76. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DEZL42400342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07dc90436f12dcf3ffd14e7503b5f1ad692d6d19fb898d0b2cb7ca828c4a1d6. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:55:33Z), 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/DEZL42401284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00046b309b89ae7735aad67487e68fbc6954e7e58780b8e4aedbc768a4276837. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/DEZL42401951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4105f8d3ba7c65e5e0b0b7877e9c1f00fcb35d385ef76106805c1315ddf02492. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:35:27Z), 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/DEZL42500360.