YSN or ysn may refer to: Yale School of Nursing, a nursing school in Connecticut, United States YSN, the IATA code for Salmon Arm Airport, British Columbia, Canada ysn, the ISO 639-3 code for Sani
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 0x60db7b278e32f41a7d0522c21919bfc0c39aacee8c441fa3f48891cc9a5ce4e2. 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/e89e4e77-5694-4831-8afd-eb238ea2c44c.json and https://artists.proofprofile.net/proofs/artist/e89e4e77-5694-4831-8afd-eb238ea2c44c.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 0xe9ed4eed8cd43641916d3a6c572b08030b7c82b0748e51b5e8b7bc5757842505. Chain 2 (Bitcoin): anchored in block 958678 (2026-07-19T05:59:57Z), 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/USLD91730058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e94ca983720fce2094bf9decb7b235a43549d047101f26895d27b096e1ddec. 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/QMGR32202233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3a6788fd1badf01e5e9a38f5a9a9a53a69da1272a306794c9e7d259fac07fb. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QMGR32202186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4107333c8b9c6dd220914c7eb988d3a468e691bab02a5686156d4a96bccb473d. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QMGR32202222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bce611c4986da0d8aa23bb40e631d1f9f1e77c277909888c32717f0098b9dec. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QMGR32202232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1de70614f23bb0c52bb26a5419424c90ae80c758a9d3cb54e45507b52c4aea2. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QMGR32202206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b8eaed8b1a778804f1e78cdaa75dfe0be73210fd876ebb1b226e90ee25b61a. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QMGR32243112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b082b97727e5df51072da50edee9e1f34902dee4e3ee34cc6b9c92295793bb. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QMGR32262979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4735ab6cd49aabdf4a73b5ec8e47b1f18b78644d2a383b82f0ec054ffcda1be. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QMGR32202207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5da2017065bb6ea196e8d1edc0585d7b7dbe62c104e6252815e0cf8ba2512b8. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/USLD91730472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c80f82871eea640a1adc8e9b32cf71f7eaf148ada319f52633e98e377ac05e. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZWFP2526405.