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 0xd775999fb41e66e21a5688cc406e3f3a6b49cc90f76e48ec233f0e122e8bd13c. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d1f6db59-22e8-4824-8408-a904be97975a.json and https://artists.proofprofile.net/proofs/artist/d1f6db59-22e8-4824-8408-a904be97975a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Feyenoord Voetbal Liederen - (Vol. 1 Feyenoord Rotterdam Fans Muziek) 2e editie
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 0x7815c17609f5a6ab2e4a8f85d7e9004a6cd9030f5db9472b385694bdc74d5a2c. 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/GBSMU2056104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22618e6ca063a6c5fa9c1910d6607c3603f310b0e45fa780053b78151a8cd750. 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/GBSMU2056105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb158b68b4fc7dd83dcc937739c8383946eac97b866afc070f93846961ec42f0. 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/GBSMU2056106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4e025f177313a835f10260695a1e0d948a6bebc7f30cbd6b5002393295325e. 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/GBSMU2056124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409732114901c19a2c421bb967cd986db9835e9f6c67a6804d817cdf27850f8e. 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/GBSMU2056147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705e863b284126bc5a67d36b74268c6a148109817425683f6ab556e182706f35. 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/GBSMU2056203.