Ishimaru (written: 石丸 lit. "stone circle") is a Japanese surname. Notable people with the surname include: , Japanese-American electrical engineer and academic Hajime Ishimaru (1890–1990), Japanese p
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 0xafaa0d4ce8dd751748d4167f908a24938006d22f97a00448137c8eae795a69f8. 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/ea10cffb-e131-4153-bea5-d9cf46a5afd3.json and https://artists.proofprofile.net/proofs/artist/ea10cffb-e131-4153-bea5-d9cf46a5afd3.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 0x8e4a2fe3d69d1484562a800f34b5dfec43d4c58bb6bec98ef91628db4ec4a0fb. 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/QZTPX2170075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74070edc59d56de1f1a3e1bc79e90b1d5a84f42db1ed154124bd210e23b36ae. 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/QM42K1846719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df5832b2c02bbe3ae2b5ead2fbdd7f4c5bc4848a31247ff88e5114ee3083531. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTRX2362969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef446786f75333e5689372c86705561e96e90ef456aa45af5ac69847cfe6b5e. 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/BRUM72301681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8b7f386adbaffcdc8c80aa805bf305d2a582f8d779c7067b2f15f6002702e1. 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/BRUM72202020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffab2baaf3781fd869e9766a74646636001442e27186be2bc9f0bd1fdef30aad. 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/BRUM72201336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf73727feab93246d4afdd01d01c8f6144f74d45735c29c3d826fba504513261. 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/CA5KR2111092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0fa266c4ec040e8c7a7be7c977efff3d76450731d90a348d785b4a422147af2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USLZJ2066234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4273d752a26b275a7a77b987c44aa9024b394f548b6b0280f62e686b00518d25. 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/CA5KR1975648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14eb4c290ccf8b5e03f7f5bf8eb67229c4c1b8bd406871e464ad475ece9c1f59. 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/GBSMU4454443.
Pais Do Carnaval (feat. Pira Pura) [REWORK]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1782b062f29dcf85aee289dea5f3dba2688bc4acc6a1b522539c2d683908da16. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZ5FN1711657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da67c481ac48b33e3431f7794781effb1ad6215233778db6b101c2227565fdb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USLZJ1429013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302bc74af93fc5c2cd98c0e6ba0ec3e1c1946450503674b0ed7ce2a69d314db0. 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/BRUM72400331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd909cf9bc01a505d20d200b4a7fcd33a641166950ba50ade8997b2308872e901. 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/BRUM72302248.