Ethan may refer to: People Ethan (given name) Places Ethan, South Dakota Fort Ethan Allen (Arlington, Virginia) Fiction Ethan of Athos, 1986 novel by Lois McMaster Bujold "Ethan Brand", 1850 short
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 0x4a552dacfb0c7c60df35b9ba3c3d5dced7648f09b3385cdb5abff3a1f0839fe9. 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/44cf87c5-f591-4f03-911b-43cf83e22398.json and https://artists.proofprofile.net/proofs/artist/44cf87c5-f591-4f03-911b-43cf83e22398.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 0x9ae718e9b1e2f8dd806e34e4df041c57e4209b066d1b1e332f8ed10ffd8b9c0b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/AUMEV2178774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce822e7b655a78004671559b49420f90bc3fe0a9decb62d9d4c87da8677d2526. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZS7J2237145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9f5bb7d0949bb5fa0b7b982d9170d1c31a62e17d314943a90c14a92f04fe2b. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/NZOG12300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c6e600cef1896bcd24c96389a4db3c2946d0734419dffd1af2fb9ca79f38b6. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZWFN2391207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec37f7c0956f594510aa0149200b8487582957e5affa3a4ac533691269ae13f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/AUMEV2403681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb44f58a0980e82e47b900ef761797368177dd4927f040d2f4400b29cd4d33f2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/AUMEV2405955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722fb29942779f65ec4c8ceb7b704dd58b96bd7300a2791be14fb8692b5d6652. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZWFE2445868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9db9f8f88b53ec0a466b01a910f94fe41157e6c74f30b2107555a7f01f6e7b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/AUGBT2441100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96b1a96685db2c6dd9a616e1adb156a238157e4c496f9484b12c50fd1152520. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/AUGBT2486992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f03e9e6d851bfb3e1e25e84b33572a0118186bed63cae48962566a1c9d76785. 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/AUGBT2486995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb869d2356314fb25f22922b56d5af1692ea354506fba88a865bf40c27b9965fc. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/AUGBT2486996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cddd3898e4c6094ffb87ce3b34436eda36decba6a355b24e828d10bbb178355. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/AUGBT2486997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa2ca8539a11ac7863165de9eb893dadb4677107710016a639eb8b0b37b684b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/AUGBT2450448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9db9f8f88b53ec0a466b01a910f94fe41157e6c74f30b2107555a7f01f6e7b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/AUGBT2441100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb44f58a0980e82e47b900ef761797368177dd4927f040d2f4400b29cd4d33f2. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/AUMEV2405955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee43b298c53fa282519eb64f1ebfb101c3103d810f745cce4f73a7e0402722c. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/AUMEV2405956.