Ambre may refer to: People Ambre Allinckx (born 2002), Swiss squash player Ambre Ballenghien (born 2000), Belgian field hockey player Ambre Hammond (born 1977), Australian classical pianist Ambre
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4afe2392f869ad0f1d4af592100675c532d2fd3d37aa116dd792c412945fd25. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b9082aac-e5d6-472f-9155-efdb7f4a5046.json and https://artists.proofprofile.net/proofs/artist/b9082aac-e5d6-472f-9155-efdb7f4a5046.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597ff7466de6843453079d57300cd1cb635c5fb4c7a905542622c57b20cc0a43. 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/FR9W12407488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9cf8cc1adfc4b4f419149c10adc7dd0f41722d12413ed930e859a35cce0c7e6. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FR9W12416015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f227f639569ecfcb80f073a5752e548b03158c552fd8e5ab04116e9068b7d7. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FR9W12416016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ef314af826be54c1afec93229a39e0a7155e4c0f4f4d271b6812c17006b120. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/FR9W12416017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935ff5e271d872b259020dff32af4b35cf1fc97bbf928a65ae5d13217f4190c9. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/FR9W12407487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61349f283a3e660bd44eabc0019d79558e77ba26f667ea3f876d218ff971c556. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FR9W12416018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed0cfaaffc7c0fad1c20be3d30ae0ce205af0a44a52f1f5d376e1a00e5743f4. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/FR9W12416021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9cf8cc1adfc4b4f419149c10adc7dd0f41722d12413ed930e859a35cce0c7e6. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/FR9W12416015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935ff5e271d872b259020dff32af4b35cf1fc97bbf928a65ae5d13217f4190c9. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/FR9W12407487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f72e2bbadf506bf42bee79904a042e8e0e77f1a055927c633b1055ad414b58d. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/UKXN22281346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796ea92a16b403abe388a8c6b19f7fbf8fd160c42e3c0d4473d38e860994d88d. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/QZS652159241.