Stewart may refer to: People Stewart (name), Scottish surname and given name Clan Stewart, a Scottish clan Clan Stewart of Appin, a Scottish clan Places Canada Stewart, British Columbia Stewart To
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 0x12d71fc25b5f5864536445041c5bad890f29a08b3fed4e1faf0e6c2e1b69068d. 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/4e000768-dccb-4a9e-a18c-e306359935f4.json and https://artists.proofprofile.net/proofs/artist/4e000768-dccb-4a9e-a18c-e306359935f4.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 0xb3439a0cd929b2bde7bd4c2213c406dd04722910c2aa21e04c328ac70e46c7ea. 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/RUAH62412170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2ba0ab54531ca6a05c06739c396c79345dc4ffdc7caa9943bac9fa2778c809. 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/RUAH62412172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20b4aa5c6f24bb230afc068a86946e7f3c4ef1e69ae5215dbb62d0de830f7d0. 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/RUAH62412174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3cda4c04411f7d586d8a402e6dd9759b9a6cb0acc3f2518cf8c523331efb7f6. 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/RUAH62412176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998e213a15e8bb160e19151c7714605cefe0986798bfab06af56d7583c839bab. 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/RUAH62412178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a3ad7dea74ce67bc8ab4fd9d6c3e09bb72971c602b64239932714e5e851cf4. 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/RUAH62412180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd387ea6cce29b8c42220307dca69f1a31324f984080ab69c3b1cdcc50b3cd246. 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/RUAH62412182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb0c48a19881cac57ba98bbb539c530882ac1554f1913da9817f7248991be67. 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/RUAH62412184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd653f9bffd05d0fd0d4b712a520ff56cb069237570fca84d65b8cc0227f892dc. 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/RUAH62412186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde87430d3b9421e013e3b0959e911516ef3a08d6e7498d0882376b296cddeb95. 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/RUAH62412188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2674406310c5c2785fff9c22e4f31e09885756b45187ab58ed476c26b2ed70be. 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/RUAH62412190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af4ce8fd8e2d94ba3fc2ae7311545881038f5cf005be0080c0f51b602225b91. 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/QMFMF2041099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6932844a8f0def91c91ebe5a7c3ed41e3e41cb458d065d870df78a911758be. 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/QMFMF2041111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7baa39ea41173450c272215651c146d38b2637e446014fec2cc6252d171159f6. 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/QMFMF2041101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d3ac32d838d37779c21a2179826094aa90877464ce3652b9754d8edd729e5d. 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/QMFMF2041102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e574f639c0b22f6bf74fea983487212ada9efebeeb211e590bdfbf1c33a94a7. 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/QMFMF2041103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31905bc56c0fd0f853ef34455dc66c23de104b1840c43ed69ac97d1882b00e50. 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/QMFMF2041104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf1634d04df9e6d20fd870e2414cdcb6daf5967e5a4ca423289958f70324235. 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/QMFMF2041105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71528a43ec7cb895c0fc726083916267031a4763d8373d5baf5f15342027ec56. 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/QMFMF2041106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5722eaefdeae1282eae877ba3f304d2a12cd4357c7353b7572b5a1e23678e325. 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/QMFMF2041107.