thumb|Statue of Yama () are that invite humans toward death in certain aspects of Japanese religion and culture. have been described as monsters, helpers, and creatures of darkness. are used for
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 0xa2bf7bbf69e52b7dadbfcf0e2b2ad0675fb17c38b63b94907658a63695293c2e. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2d056628-d915-44ff-9991-9ba2bde5bcd2.json and https://artists.proofprofile.net/proofs/artist/2d056628-d915-44ff-9991-9ba2bde5bcd2.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 0xedfd6fe29de608c793ab1efd96d6135ee3af15d9bd8b9f9974fb2a3fff6e0d04. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DEZC62496349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfd6fe29de608c793ab1efd96d6135ee3af15d9bd8b9f9974fb2a3fff6e0d04. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:02:25Z), 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/DEZC62496349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e26b09f58d322cd86cca0aa1518a00a04d1797b00f00e8a23c577da17d8439. Chain 2 (Bitcoin): anchored in block 958863 (2026-07-20T13:01:11Z), 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/DEZC62406995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e26b09f58d322cd86cca0aa1518a00a04d1797b00f00e8a23c577da17d8439. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/DEZC62406995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895f9ec19730b43a2c56cd57b9d289947fec90ccb1f11ce5043fa493ae465906. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEZC62592156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b1799c8c6b223588ccb89ed817ae5c010bdfd248831acc7650c433c9f94475. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/DEZC62593547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4bceb98c1e3e017e90d8f334bcae92f39a806d295d00dbec8ad7381b7eb305. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:28:58Z), 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/QZRP52577633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c527a47acdfa6e3591e66f99cf2d4289d7547b7426072f896f8443921b4d46. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTAT2595282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7a4c0e7f4b2cae287ff1c5a266a54fabca00cc63aced1ad8f5569f9ac5fae4. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZTBF2589213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1e1317ddc71fc4d9c4a28810d5092a3afa7710518c0b63df28d01a7f21761d. 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/DEZC62437122.