Oshima Brothers is an American folk-pop duo known for both members playing multiple instruments and looping their own samples on stage to create a complex soundscape that suggests a larger ensemble. T
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f057636573c1e2b58c2513d37c1d202ec29f6ed9a47b7bf35ee2762a16cfd2. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/edd6c531-65cb-4b31-9d33-8de898700afb.json and https://artists.proofprofile.net/proofs/artist/edd6c531-65cb-4b31-9d33-8de898700afb.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ade3186ff53dd74d3158799143ac80881a35441e7f331f0062f32abff649766. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USVUU1800645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09407e0ee3ed9f0d4de06147cffe994e54ed95fdf7e80ae97691c01385fab29. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USVUU1800659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d37a5d72e6cd58c2a11479c7af53b485d4c479d58a704dac880ad4a7299b1d. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USVUU2000686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48dbfed428c8643aa3ae2f6583e1f1d71ba7de19bc66c0bdec3e418f07fcc267. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USVUU2000705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf109c678da0be6bf688946f8780114eb4b9e3d99f7b81065c64365aad753131. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:36:41Z), 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/USVUU2000712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c0a8c949d7e848a3627c83aa3e11bc8a78bc3ec9ff71c2bfd7a04c562dfe70. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USVUU2000718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36177624ea47bfb60e64b8f4d8d0c185cde75823153dee616e18d8ee68abfd1f. 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/USVUU2000720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ccdc4b5b0e1275e29dfc8b263e3d067bf0af5aee7544f4ced92c354d6806f13. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/AUMGB2201573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609fb7867a6802bdfa68d3094bc7ad917c82afa114c06090765efda2c2eea482. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:10:21Z), 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/AUMGB2201576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cfa9f1682f7d57ca6d5f968b3bd1e465f502b1c931d773980d56cff3ab49481. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/AUMGB2300345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438862acc4e9596832368724d6dbc319fd324c9dfc4d266c60e52bc81ca40d12. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:21:34Z), 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/AUMGB2300344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355420e4045c9581a15c6f2ef9fe74a4de5fc9a855ea889c90c57b6f2ba40f62. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/AUMGB2300542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8022ef05315b612d1b737d2f65f4d8e233881d6acdeaefa31e2d51e7f47909. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/AUMGB2401741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8022ef05315b612d1b737d2f65f4d8e233881d6acdeaefa31e2d51e7f47909. 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/AUMGB2401741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113543d33eba16d7eeb50e7e7171e73ff314ecc16b13e7ef427d476d28faa255. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:11:15Z), 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/AUMGB2500281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469d5b8077fe52a8beadd1bf7265c1d3d4f3d083f999bdeaec476a62e58b1909. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/AUMGB2500291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e7d9748b095baad4166cb9f8ad4e7167f726e9b06e1f7a296ef952a9396612. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/AUMGB2401945.