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 0x9e955c518725af33e52d579c2aec4529aed7f126a83a09218ad1c32d1d03a3c3. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a6e317d1-4ea3-445e-9d1b-c80f11d2ceb7.json and https://artists.proofprofile.net/proofs/artist/a6e317d1-4ea3-445e-9d1b-c80f11d2ceb7.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 0x73903435cf80366f95c2a21a591b735b5729b7f9aa0a9c0880f691bb9aa0ba6a. 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/HUC591400692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5d1526f6c73b6ea90f0089fafd2e6c55c5f1967be55b9a48fc07fdded5c6e1. 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/HUC591600223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5bc0f2d66f11953fbde2da7cc146d2d6e3ad292fb42f858fd903fc80073177. 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/HUC591600226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb21d522d280bb3ce24c1a99a23036cdc120862c4c6b17caafcbc1d9047586f7. 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/HUC591600229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18c2c0f2d9d8ce66d19a5a458a56f0055d780ab4d1268a61394f56ab4ce5761. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/HUC591600231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e00d57694a6580b5c441963b13d525fe726af71ce7fbaf214185a1c4ee9c00. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:44:14Z), 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/HUAKG1700801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a06d3fd20fb6e4047ecc2126242c1f2b36ed9463fe6e32ad71c7de8628e226. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/HUAKG1700805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e221e2496f11a4995538bd6dbab487cc4701f1f9e556545f1f20104ed796b11. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:48:55Z), 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/HUAKG1700809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854d1ff9a21b296b2c92becf5f2f7a934d31cdac5c83901bf8d16385c75b3f92. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/HUA612101092.
Szerencsét boldogságot (Mulatnak a romák Berhidán)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd7e948f9c568d1e900714d135bb094ef238021fa34692e5e69d9efa58ba8ab. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/HUCC22200074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6811c34c5f1cb6e85eca9bb680ad5c0552c047bcbe7088d3695aa4cca09085c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/HUAKG1700642.