An , or , is a Japanese term for a three-month period of intense training for students of Zen Buddhism, lasting anywhere from 90 to 100 days.Ford, 217 The practice during ango consists of meditation (
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 0x16d02861281b77a930175a6e585e3039f7cbea8b0e01663d5a9928f7c7107b11. 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/968a07a5-4c8b-494a-ab40-06835ee7395e.json and https://artists.proofprofile.net/proofs/artist/968a07a5-4c8b-494a-ab40-06835ee7395e.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 0x568b60e7f2c9f08bfa02c7ac708bf269cace0c93acb82c685055317b02ef154f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE5752210173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61357b905e6e8ba48b8a0d5c29e368d96069f76d370191e844279f14ce2a62bf. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZMZ92234174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37028697ecc652d7df0b6477bb4084402b1f89dae5f3a9507df07e0439d85ae7. 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/SE6SA2277675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x321d2c0021e27e4f76627a82a8181c24f40d94eff4f2a59c2eb895aef280c366. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/SE66N2210759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f45d27a008453867876641b4a895f75cf82fd2a16995392d6c7af9e0c10f494. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZTBC2379495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635bec725f65b314f27dd697a6f2407f191963b7864a763ca107a274783fc88f. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:04:00Z), 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/QZK6L2481581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6425443be2aa3bd47c6b4767d9810cd837e36928b2677f253c85e476c44609. 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/QZTB42233219.