Shiwa may refer to: Shiwa, Iran, a village in Razavi Khorasan Province Shiwa, Iwate, Japan, a town Shiwa District, Iwate Shiwe language, also known as "Shiwa" See also Shiwa Ngandu, a grand English-
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 0x5098ba2dfc758b14d911835ce043476d182e2f71baa5bcb8120e173123378f08. 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/b022f414-84ee-4602-aa8b-6292ed1669dd.json and https://artists.proofprofile.net/proofs/artist/b022f414-84ee-4602-aa8b-6292ed1669dd.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 0x3c29c757a50f812466bb43ef57e9fb5e7336bbd7fcc9daf934186ef82d6b9497. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/CH7812213145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7ee1f6306e822904784f0dfd729e9071d27fdbb93c1709a1c49f1ffc7b81f6. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/CH7812213146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9a5e77f4e560f5834ce8e5bc55a522cfe330e8c2d0f496c060ae1ed23593d3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CH7812213149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb0529406e51c60498981810d98c6edb548970c989574e60bdc0df3d6813ba9. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T02:33:54Z), 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/CH7812213153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c1ef270ff29679734d2b17671b714a783379cf03d1e6716b4e7de8a7c61156. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-21T21:45:32Z), 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/CH7812213154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c73c56f07801dfcf2941cb1b911d0bacc1b577a0085b5cb0fb9ea9f905d7fe. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/CH7812213155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73670db7aec978f6e6ef65ff7721c5172b8c734624b1dcc480138a09354d6547. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CH7811816875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab28ac4ee1dcf720e99e9c0ae68b0d5ca29daae77c2c8be50b7348fc581886e. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/CH7811816876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2901a10b44bdd9f3ad003dfed19fe6de27cc7f38bef68e3bb3448ba2eb83acd4. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/CH7811816877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d48112ed9436404eba05fe9ba0c0e07f7d63a0497a1dab7e2c5fa0dfae90e2. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/CH7811816878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d5ae6a376d9b6089b48ab7c465134bcf546798783c04135c54f52492435f48. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CH7811816882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e68ddaf107325d545066dd3d78cc7f8319ae4b5432ee40ab214fb3920bd223. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/CH7811816885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd50c89e9627101bd84bb5627d308cab4eb04850b1f0400e2806c68d4636f2d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CH7811816886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a73b81a2ab901a91b181be0bd19185906c703996adc1d3760f86b2deb569d8. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/CH7811816887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfadf8b697728088466666f766cb393431f52c8b99c2b6208c0669f33cdd8af54. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/CH7811816890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bec5002767d7ecffc914c70eac02b917d86448a1e02509d7f54e91a3efb8ab0. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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/CH7812111606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f516b82ea56aacabc12e18b402be1d754116526f608ec851e14ac32785a0dee. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/CH7812111607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482d42df328fb3974ce5dda697949cfdf752562d5299b2401b9c6d52f5c0efc3. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/CH7812111608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce27e97788bcc3df7e3281e5e04fa024e8247fe3f2105c198ecffc678bb550f. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/CH7812111611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1812d48577c65054f3d4f955ce3164d7520e37a6074ee68493ab902910a6e1d8. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/CH7812111614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34567c3c3b25d01f150855d8c2cdf49a50ba7b8a6cbe6a32974d5be1df4a70c4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CH7812111615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff47772617034b72f0c7d57faf02e44d25e2d367357584af060db6f2ef75c417. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/CH7812111623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b8cefc9f63404613ef13564423691a3ae3aeb49bff17d89aaadcef46e347bc. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/CH7812111624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920b1ed62f3c04cadfbc68f8954bc72c7992195117c9700fe4d78d29a461e3d3. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/CH7812111625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898af6d6be0a3057c6e3be8bb3fac5532aac79b80205db7f07f76a20867b3fe3. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/CH7812111626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1396f9c270eed22fd50e0221f4ba93357d143b6adda97c1437af7bc6d52fc871. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-21T21:45:32Z), 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/CH7812111627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe4592ea241f7aed30caa5ade93efc60433a2d12b8b373380247d38f5c2b0f3. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/CH7812111628.