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 0x722ee35087155e6988e1723ded05547e39810b418f23b28123866c52bc03b12a. 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/5e3207b8-d6d6-4cff-acab-9f8a5ef330a5.json and https://artists.proofprofile.net/proofs/artist/5e3207b8-d6d6-4cff-acab-9f8a5ef330a5.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 0xcb37a4ffa32ece4e447175863a738b40dee680c30343c4e2875401fee2139881. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:59:55Z), 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/FR6V82363796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc98c00602c01fa9b7d6cf077c15b35ba32a1c51c56212a1bde37b8161074920. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR6V82363797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5da22c28eca7b74df8d65ee67afd2c5a384a72e8956fa0811798009a2fdddf2. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR6V82363798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06c99efe086cfaaca8797e0303cdb4d11f7dfa962db8cd2aff73c579e32593d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR6V82363799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697e2fe017cad99dd98dd17e90168bbe6cbaa7a0d41538da9ce0ff65282d2c20. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/FR10S1420448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359ea2deb4b69cb2daaee85ec311db93f9f4a425d1adce23a1ee264baedc5ad0. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR10S1420451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b5c4cfd7aba3962cd8e252ed4a66d82eabf1ab783cef64104dccf494fdd8b0. 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/FR10S1420456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e85d86247c18b2ecf913f9f0eb2620971c9eab63895ffa07d7fdd44fd46a9cd. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:15:53Z), 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/FR10S1420460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d427081c85c14efef9a3c89543e2fce5968937f24add39526c677197daf6f2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/HUA232107501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bfec1339b7a840bb564869c1a1614568a945820eb06807171701dd10a2d5f6b. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:40:36Z), 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/HUA232107508.
Tükröm, Tükröm (Kortársak Quimby Feldolgozásai)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451862cfa43cec98770e54efd867a5d724648a7c2f2ba84f07608bc0309e1fde. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HUA181624610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23fea5fe8d3dcd7e4a44c0421196df06d441936824984ea2cf65231751f115d3. 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/HUA612300927.