Sadie may refer to: People and fictional characters Sadie (given name), including a list of people and fictional characters with the given name or nickname Eben Sadie, winemaker of the South Africa
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 0x22d512241e79d4e2cec5df2363558402e8e7831f0e1d4da60371a4d185d8a4c0. 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/0a0f1db4-53ab-4f41-bacf-c2dad52fb479.json and https://artists.proofprofile.net/proofs/artist/0a0f1db4-53ab-4f41-bacf-c2dad52fb479.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 0xe2bf6937c51f97ba89461cede8f9f9ccfff6a4c868695855a63e5b40d9831021. 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/JPZ921308829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee04279f24c0c98893b62ddcd30b50b7dd95ad4a4df5738d2e0edb4948d6f35a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPZ921004999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f416ee0079df97e275c1d01433299d459fb98aff86a3a7bab0046c3ab812616. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/JPJ590800102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449f105b4159bfcf6b0cbf9c24a25d37fc9755b26bad23a8f1ffa8ef2c5f767a. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T00:53:33Z), 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/JPJ590800089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ebea36bec3f0998de11eb059b83c275d8a0fe34a89cfafecd58f554da45e907. 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/JPZ920906654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac174134c8a371fa598e1429806ca5b9c4aad85573d69e07042b2d71452eb6f. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/JPZ921004419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dec5a7be8b9afe287e360e6e24290f111980bd9d4e376fb4479df25b9777e78. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/JPI101001687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd5f44154c08a80b81a8743ed46ae3f3a007f8265058a368afd9a2107c9a433. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/JPI101002071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb91399ad1b95f8fab954cbb8bee0f06c753e85f2b0bf3c4acac1f5501045e0. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/JPZ921211650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53aea9bf558fc3017d6564c0ba56813ad4c0b8299a4aa82a358958eea46e4e0. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/JPZ921211654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4657deb8fb4a4becfa1b418fb29839ff6083a50450a5abd96436ea34a6d33a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPZ921312650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5251499b0298ccc03ed4608f30e5473a00badf8a6357b197147f89e78202ae9. 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/JPZ921312651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b3c83c1c91b3def7650a7088114188368c2d481d9be980ba51060a75f34277. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/JPZ921312655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0b911432d69d10cc1d9939e09874f68f95e6d31ab6169b623455d07453aaa6. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/JPZ921312658.