Fayan or Fa Yan may refer to: Fayan, a Han dynasty text by Yang Xiong Fayan school, one of the Five Houses of Chán Buddhism
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 0x83db135e1cf3af8f1e99e43687e6abdbbee4b639084ce585d5e4d4ae586f0b84. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5052a1c7-8a05-4920-8a85-36ff45a8bc95.json and https://artists.proofprofile.net/proofs/artist/5052a1c7-8a05-4920-8a85-36ff45a8bc95.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 0x6f52d8ad03d53ecffa86afdfd3f1468facaead14084aac7c82383e25bf9000cb. 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/DELJ81759784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0cf3d52f635758bf603fce07b0c8b549289e65991422a278570e45c549ab8ec. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/DEA621900375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4572aa08352e110ac300918018cb7d476c50be854867ede3973949df0e72f365. 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/DEA621900810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5998d957566e5a9f096966c56777325508a014c64452a37cc892f8e2e7dd2938. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEQ022370115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8013eb70e4a553b26087d6dd95be37acd08b3437b1ed706836761a11140ead. 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/DEQ022370603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ddc8e02780ff9ed22c5233bb3b51b51abcc0fd4e7ee97c9a8f16009a6b1cd42. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/DEQ022381947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c475fe87306cf2219cfea661bda7447fbf7da5185e4f698f46f1ab07535e07. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DGA082367171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9509152e336effeff32b212974ce6d74ddac244a52b74c816762fcf8645448bb. 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/DGA0M2327971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de85f13a58bd14d41bd03fbcfacb390539bb5c162835b65bffc75865da32e03. 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/DGA0M2494667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbf181d76976fac56dfaf75c24db89b8315fbf9d34f99adb10d57406dc90088. Chain 2 (Bitcoin): anchored in block 957833 (2026-07-13T09:36:32Z), 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/DGA0Q2420049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbf181d76976fac56dfaf75c24db89b8315fbf9d34f99adb10d57406dc90088. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/DGA0Q2420049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca2c355ed9b9288a9403478dacef4adafc17fdd1471bd7fb8c544ca75529eba. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/DGA0T2429702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbf181d76976fac56dfaf75c24db89b8315fbf9d34f99adb10d57406dc90088. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/DGA0Q2420049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca2c355ed9b9288a9403478dacef4adafc17fdd1471bd7fb8c544ca75529eba. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/DGA0T2429702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38077b2e0132826499ff9901cfa99465ee4cf65f0d6e14f6615c075cc6e8b80a. 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/FR59R2569066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005cc24a364319c429f839166e7ce1ab90827c17de6f60d720ecb37e0da6f7b1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR10S2582763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de85f13a58bd14d41bd03fbcfacb390539bb5c162835b65bffc75865da32e03. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DGA0M2494667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbf181d76976fac56dfaf75c24db89b8315fbf9d34f99adb10d57406dc90088. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/DGA0Q2420049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca2c355ed9b9288a9403478dacef4adafc17fdd1471bd7fb8c544ca75529eba. 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/DGA0T2429702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de85f13a58bd14d41bd03fbcfacb390539bb5c162835b65bffc75865da32e03. 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/DGA0M2494667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbf181d76976fac56dfaf75c24db89b8315fbf9d34f99adb10d57406dc90088. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/DGA0Q2420049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca2c355ed9b9288a9403478dacef4adafc17fdd1471bd7fb8c544ca75529eba. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/DGA0T2429702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4cd57f0dd0ca7864768c7cf26995f2493846b61a73217841351c5f9e6d7472d. 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/FRX202508448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de85f13a58bd14d41bd03fbcfacb390539bb5c162835b65bffc75865da32e03. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DGA0M2494667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38077b2e0132826499ff9901cfa99465ee4cf65f0d6e14f6615c075cc6e8b80a. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/FR59R2569066.