SAS or Sas may refer to: Military Special Air Service, a special forces unit of the British Army Special Air Service Regiment, a special forces unit of the Australian Army 5th Special Air Servic
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 0x2efbe25f0c94b465147225a1e7f6a00c82a440b667814895c3b5ead242eea724. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/95150d19-cf38-437f-9c57-dba460d1d347.json and https://artists.proofprofile.net/proofs/artist/95150d19-cf38-437f-9c57-dba460d1d347.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 0xefbcad78488ab5a3550e39ca71f96450e0ce6f61b362c885987cd360be8e0493. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/QZHNC2110983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b1c5f5c00bdd5ec40894d4d47a44fea339fa8be2279de525084c9e3639f407. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/QZFZ72120366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1283172f841dbfc85f7a6eb0a845b80cf0fcb4b7000c8e231110185112e5b9. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZMER2090483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47090f4094dbd5cf03a10def56c84e07b8c2776abcfdd7df829b506d5cb38e9e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZK6P2059896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1ef87e94742a2e6978e54830e4493ed17c1441dc5e7dccbd48747cf93d6d51. 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/QZK6P2059897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84659153686fcbec8c20b8639eda024e833e6c68a0bbec98643e8eb5daed5e23. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZK6P2059898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99b80c698fd00eb875479ee51089af645f22b085bcb68872bfa766943d32ee9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZK6P2059899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7442b0e4e419f4040ec6894b338c8cdb6dff1dcf7b6c5a852580b7a899f85e50. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZES72034046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d035238c813ae21edb18e0109cc65a3cb71c7cbce3593b4ed6d13d9f41ffc3. 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/QZFZ42015924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0c1f46084f186bbe1663ea0be95bfb3ead2f4408e25c299da0e0b43da22fbe. 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/QZFZ42015923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf969512c66471fa8466c5a0186099a8d74540f73308149c327831e8b3c34fd7e. 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/QZK6L2095414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98ce4fa55ad31685ba3a0d91631c42c11968a00e359746843b4364066332faf. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/QZMER2130303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486f42e7ae76e430cd8e2070228a874f3a8c58f96c18e4b6a9438905d2373ebf. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZRP52274513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7670ad4428cb18fc5c85e6aab666137451f02b200a5768b4919c70542e35d2. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QZES92085219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ceff54465344a5052ca99e47011ca4999ddc637cc7c31a72180808271bcf113. 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/QZK6P2061969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f9adc0da54b692e1c51d8f81060789817903f7a765bb8b3c130afc59a9b85e. 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/QM8DG1977543.