SBD may refer to: Douglas SBD Dauntless, a World War II American naval scout plane and dive bomber San Bernardino International Airport, airport identifier code SBD Savings Bank of Danbury, a bank
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 0x44452f01e2b136d0ab32bdb43876242c47d2feacacdfbd05f760a5ad53ab4e70. Chain 2 (Bitcoin): anchored in block 953610 (2026-06-14T07:58:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/140c3276-dd45-4f4c-9d22-8cb5dcaf5a0d.json and https://artists.proofprofile.net/proofs/artist/140c3276-dd45-4f4c-9d22-8cb5dcaf5a0d.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 0xde0a48278a0296404405df4d4892b8b4513e7bb00f65cca61d340c2c78dc3e2d. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/SEVVH0004102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e7b4f461dca545a947ae493af1cb594786efee23c26702ccfaf564a7a5f433. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/SEVVH0004104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644bab8c74b56a44d0730eccd75b4c9500b327632ef9cd5899e56cc4a8b1ff71. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/SEVVH0004106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54d73b9b790ed1e0d578ff8cd506de08b9e21fa433b949c2e63677ffb7ea8bf. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/SEVVH0004114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb304d9d973ca3a5b0b477fc5cb50a9ff3ad44d9da9623b291e653193a06d55cc. 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/SEVVH0104601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596cc5aa500e7512015ec457a4b5651c187dd37f0b4ace7aca2d966f666a7b0c. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/SEVVH0104608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d244aca2c76cec75a1b3a2ce7e43c1e5957a2013ea0f170b53802452ef3db1a. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/SEVVH0104611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18369e0eec3fb191b81431c55eeceec8f6fbabe25912cb88c099c1805ba2ad66. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/SEVVH0004301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b7e2c8c93849d7b7a868d611cb4fa147c6885495590895709d5e472aef2ed4. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/SEVVH9904007.