(trading as Takara Tomy in Asia and Tomy elsewhere) is a Japanese toy company. It was established in 1924 by Eiichirō Tomiyama as , became known for creating popular toys like the B-29 friction toy
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 0x684f67f3f22216159e6495668835308ef9cbc7436cb31fdc6a6ee6a3e9001c97. Chain 2 (Bitcoin): anchored in block 953812 (2026-06-15T17:06:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f66c2703-352e-48f7-919c-c33fe3cf5435.json and https://artists.proofprofile.net/proofs/artist/f66c2703-352e-48f7-919c-c33fe3cf5435.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 0x3d919aa7eb3fcc8c17e4d040b0bb7116442a0923c119a59d518c9bdeb7dedf33. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/GBKQU2452838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8b0c455ec6475516ea2c93b16020fae70d9c95159987c3bbd7719ce72a227d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKQU2441321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4a640baa80d538e478c384593296287abdf164c773d2e548e115e39efcd46c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKQU2443114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97bf92b621a917b6509b329b43452b572860e51159ad4d47dab26154fabe9ed. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/GBLV62309560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1959abb6c80c4bf3ea6d8a5fb450c0959032f25c65c20d48daccf8fa5d731d1e. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBLV62312246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81cba8f5e23fe0042b7387ee613ca75a33ae9cef62b533cb2a830fe6e29b701e. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/GBLV62308490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d6fdf2505aa37e464a76d954e56babd5e97f4121864b3d8ddb43a14a39d82d. 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/GBKQU2382671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a64ea62d6d68b677be27b7c4d2ebf65fd0bdb4519450bd6ac8ad9b6d74d0cc. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/GBKQU2368757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747d65c04695e25117c70eef9f655acd427eb160392d226548e4f51799a00844. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKQU2358530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc840f17479f5f0a769f13dc603e86a24d3d5a2cdc1e92ad67f28278e630f6987. 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/GBRKQ2326415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31c7ccf8c29b8b00b7c65d8e9416259fb72c5eb701c31a9fff5f6ecbb0856e9. 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/GBKQU2334563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55b09ee78d355da1c1e71fadbd1a9b18a152bd7627ccaa51da2b78319be32a0. 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/GBKQU2326325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d88e6ec22f117fff16d14c15a8cc47f287aab089c83ce07f32fcbfcb4ad7de7. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GBLV62201763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6c2e82f0f6b3723448a10f792db7f993c4dfc162755d84460528c49d7ecd0c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKQU2259028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e89bed78455ac75e80087d25be62aecd9ce5c82e6cc7bc0fb5f84fce3f2d69. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZS642289337.