Uncle Iroh is a fictional character in Nickelodeon's animated television series Avatar: The Last Airbender, and The Legend of Korra, and is part of the Avatar: The Last Airbender world. Created by Mic
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 0x16562d8cca0062f9bdb8c0d5829b2a69aef43f44b583d0e11e64910e15e5e19b. 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/3df6790d-926c-4d29-acbd-3c73a56570f4.json and https://artists.proofprofile.net/proofs/artist/3df6790d-926c-4d29-acbd-3c73a56570f4.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 0x387861e8ef65b38c851bfea6afd88bf9bc51f5d90042796294b593bb887c97ef. 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/RUA012000698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46829948a2c71bc086075cd6f84ab285d227b43b9827f469b06f6e8b51f1b4b0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR59R2277884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc82523cda4eb5279b78e49657f05c0bb18f69e2b6f87ad98af1f9a36b969b9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR59R2277889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d5bcce48d51ca7c018c7f4dbaa9ad89655e72c7f97e192a311891ab5fb95aa. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR59R2277888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43575e5fac04240eca75eecae4998c73b142223d6184652a8375ab09769a318b. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/FR59R2277893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1597468d1077ef7662718aa136417daa5c8420f07f1dd355e3e79afff99b3c3. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FR59R2277890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b90334dc1195b936ff7e8dc6188c4f42cc2f81bee28c802d393e527d3b74d63. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FR59R2277892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1205dccdf92a73586da3293819de84eb5e80bc7da294b20cc01c221d1d844a08. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/RUA011900304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc226f167b45666c884c21480871e9816c06614040d434890877591f5eb75c62e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/RUA011800321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d52c86bb08fbd8bce07053a96038d41a7c4f1a4ba19876e4a857a30b25c8bb0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/RUA011900444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2f6c283699e799a8f5ccc9d0edcffe0842db3bafb490ee79943f4f048fc3bf. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/RUA011900445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174ae431becaaa55592c941446f97dc1872c61379da907896bf1335d355b3b38. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/RUA011900446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1663ef3d07f9c6b835f3d317c1c3fce10a8dfe51afa5f748bc40213a4b43f7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/RUA011900447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5dbc7ec64a3e1202e642a0d833adfd4747dce085fc64cc5c4ed23df8018dd47. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/RUA011900450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd783d2f1a8e3b98c8df11c700ab1a45afdd25b06697428f77b59ed46b4b9d067. 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/RUA011900214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce8cf0e04f39172cf2c62d3bda32dc5389cf125d2e32133def3c644520f8a66. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/RUA011900079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59faa86076ece7284986f32748777f109997d38557ee3b38ee111625d202ddf. 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/RUA011900080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6ab789029132d81c878452d09baafb27d350a1033788fb2f856a0b36af8b1a. 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/RUA011900081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4930c2613a7e17be0efd22ddafad585dc3bc3145e6328ce19fb802f7d9c6ad88. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/RUA011900082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a27492a896b4d112a63d3e74d02764957e51eb65a33fdb844e82a3d0427727. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/RUA011900083.