The Ducasse d'Ath is a traditional folk festival held in Ath, Hainaut, Belgium, to mark the victory of David over Goliath. The parade is held annually on the fourth Sunday of August and is characteris
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 0x393f9dee3bb9c2c25fdcfed8a76a07c4212192383a9c584792e233c3eed1f116. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9809f702-b4f9-4def-b59c-9f5217291a54.json and https://artists.proofprofile.net/proofs/artist/9809f702-b4f9-4def-b59c-9f5217291a54.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 0x29f486233a1c3738eb665c48cd33e49509aae43c432ee699d26dac7fe5ae9463. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:54:09Z), 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/TCAHH2328955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7b79e40cd2efa898801edeb77978985e92be675bb6402856f5d73d2fc2b002. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/TCAHJ2394131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c7d0a4330672b631ee4592fa4531232334075942504b7a2a531d30fd7ef844. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:53:04Z), 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/TCAHJ2394257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ca09dbb202417f7053c09f35f46b197f941f444f56fc5a070d3b703b96bd11. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/TCAHJ2394195.