SD may refer to: Military and weaponry Smith & Wesson SD, a line of pistol (first made 2010) SD radar, an early US Navy radar system Southern Cross Decoration (SD), a South African military awar
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 0x759f34e22bc29a37e98753911b61081f55e16935fb44df6f9f61d87f89c7ee2d. 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/49233500-da15-49a0-95dd-a4b4a5de0d0f.json and https://artists.proofprofile.net/proofs/artist/49233500-da15-49a0-95dd-a4b4a5de0d0f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Человек со знаком в виде креста с загнутыми под углом концами на лбу
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 0x349f728a879ea381e7411d091bdebf5cdedbbb8482af4714b7883d5a355163b2. 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/FRX201652052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51460f5f94c1d9911e01ee36b3931aab86bf3525d97b278e70359fd8df1fc665. 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/FR59R1898767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae381f003eb79ed8e566c7ae7d67c0046863687c5b65d1460a0cbb19fa0a462. 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/FRX201640676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c7d3aca708f45b53eaf19639b5011ae496a016a5ad47b14e98493e070cd5fd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRX201644565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4481602bbce89c7d759a3aabe17bccd86a3b07281714d98c398d47a2bb2faa. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FR59R1951750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f79b09529c243e70a8bdbecf15cd310a8e6dbdd9b065ec08a11d410f3b6db3e. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/FRX762565247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc38a57e927d6d71d459f2df02988b7e5337ef9acbe9adbf19f9aa93758091d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GB2GX2100104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1b3b165fb61a4db2ae59effce3eef08da1d3ba7290587b98f31f7cd0db85b8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR96X1601637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c55c94399927a298cc8e08a0997a70189d8274258cefcf8412cefe2c245f2de. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FR96X1601645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05bc7316df60983be2cf4e553a4e77546656662bc7cad15080ac421eab6f35c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR96X1601652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2186a0e64e2458a27b0361f23f67b007b577ab45717ffe926766903e8da9991. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR2X41712042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92cb05e88ca12aaccff84c60dad8f1b9c1d5301a39ecfc916a18616e455f19ae. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/FR96X1601644.
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