BDK may refer to: Big Daddy Kane, an American rapper. Black Disciple Killer, term popularized by Lil JoJo in his song 3HunnaK Bruderschaft des Kreuzes, a professional wrestling stable in Chikara Buduk
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 0x41dc0225a5fb88aa439bb4e4ba176d0a0b5fed9f5a6a0ad0d90af6089a0cd7b1. 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/901d68fa-143c-4d48-b424-4a720dc2bfd4.json and https://artists.proofprofile.net/proofs/artist/901d68fa-143c-4d48-b424-4a720dc2bfd4.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 0xa56f4be8b2e95a4ecb99be4a2b0abd6638d64ca5f8fdfce3bbd954a6347a6496. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZGLM2221836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf863e39e7b55d285e7736403ae53bc0f8b027cab740b5a3763ca7c61f154ea. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZHZ52246571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9572b1faf0729bf832e68b33b1712184c889fe5df021fcc9a255bfde6123d7fa. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ES71G2307933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff6d2d2d9f31eb0d51a67021624bbf1eff6976ad08336fa982342381e60f4ae. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ES71G2325143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb574e09b767116b43d5f75b6ea614e739a2c6fe5c460bf208f022ed1cd9748f. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T13:27:11Z), 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/ES71G2332583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd716aeb771a7f34a41638ef8af241ddc768ef26dbca13f988c8e85187815b6a. 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/AEA2W2416346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74342f7fc24218a13f498edb8b990e0c8be4e55a80fa60bb0b9286573e79263. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/ES71G2412145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708640881cc086983a7a7ac4a5982d1d5045de4696223468beaed43721aa1929. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZWFT2423132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9e50ae8e75e1102cc8b69b3205b7bafbf3bc63aa9d35d8195ddd71695c4f6d. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZWFT2452740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946024512098e837f4b7316f00f785afd65cf21bde5a31ee27c9abf9fb037687. 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/QZWFU2416316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090a4533000d6e5e77200ac1e9cc874603aa8f738b22387c19c9d0f236b1cdc2. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/ES71G2426310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a1ca0826982145e96401af0c1b4f2bdc4812fe39affae77872d5639d975a15. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/ES71G2426312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c07567960c995f7bab64ff301313da378298c5d763ed4af5ae17fa6b48bf72. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES71G2426319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e0cfe631593e9d2a4bfa90a748f3c1e588792ff0d3e1524259855aed91b004. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/ES71G2426318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe94979b7bbb299c4d61df2a9be04d5cc5294308a31edb38cfe9434ffbd0a737. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ES71G2426320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfa7d45410c41ea0e8bbfba3486e53414c4d66cb1f39220de1caf75e8fc588d. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/ES71G2426317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1937ffddafba6e6d3c3f96b3b6a0ec2b37eefe2f1a1dc1248602fdcc47a963ab. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ES71G2426315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e57947e7e45fa4e77e045406046c70e3ab1a85571a75f10f1bc5853ceb8c19. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZFZ62569537.