KSD may refer to: Radio and television stations KSD (FM), a radio station in St. Louis, Missouri, U.S. KSD, former callsign for KTRS (AM), a radio station in St. Louis, Missouri, U.S. KSD-TV, form
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 0xb1433f506065d830e0f640d26a4746f50cea4637805f2397b70ffcf7624b5e57. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2dbe6b16-8ad3-4f6f-9f08-da2bcaf74d00.json and https://artists.proofprofile.net/proofs/artist/2dbe6b16-8ad3-4f6f-9f08-da2bcaf74d00.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 0xf1c920365249d60fb9cfce68ea887f593a645eab4c57187f7fa03bbd28d12a66. 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/QZNWV2278575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc5329b9615fdcf65b0f8ea53a122d4f89368699ca710b5116329eed3b8a5ac. 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/QMBZ92281167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a64394f3276ed96b2c4d58839872db99807230fa34acbd8d0a1a37cdcc315c. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QMBZ92298431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c920365249d60fb9cfce68ea887f593a645eab4c57187f7fa03bbd28d12a66. 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/QZNWV2278575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2529a0d58402c4bc8660756bdd80e425342b941fcb300a7763bca26eff0d842. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZK6G2347931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74eb755e036f12f52104f5b48a90a0a6afe1e24b354de2c2c17f4b5149e97897. 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/QZK6P2208960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85b419da795b6fa2b7d6277e13fcd1525726ecc22dd70df5cbca598439e08de. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ES71G2219958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6d2ab005c57ae862324b89d649d8e76e9ee61cc53fe3f156d1b9eae7f61dd1. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/QZZ7X2464726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf191d7be615d903ebcd644f4359a8cdc3e1ce4a47d3e7dfe787c7bfeeef9ba0d. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZK6L2331000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51ae6aa484505ff315d6b49927ddce69ecbace46940d78072afc82a4d0211d6. 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/QZK6L2331001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438f8b0fb5d09c63702010a7d5325e2dcd95604ab55f81d1377d88b88fc0653d. 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/QZTAW2236420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a8726cb5919b989b3dccadad013beaf0bbe9b6ef1b453d40eaaa00e6cccf88. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZK6L2331002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1ec9894020b9742a07bf9244f8e227b6e4954f9fd50c009f8867fcb523fa6b. 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/QZK6L2331003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd95e9332df319bf10bb9b0dbe3e725243b9c35a39088c7ddbb01a157f981b51. 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/QZES92350992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624454378a7f06278a463af3f460cb18e6bd1a9d26bd0b14389cdf76e72fc6ec. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZES92350993.