Blackpink (, stylized in all caps or as BLΛƆKPIИK) is a South Korean girl group formed by YG Entertainment. The group is composed of four members: Jisoo, Jennie, Rosé, and Lisa. Regarded by various pu
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 0x60d4bc15bba8d363d2f1ec51296969f2cb700a481b162a779a279e6cf95d886a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/91e007e0-195c-4725-91f8-1851cb5cfd5f.json and https://artists.proofprofile.net/proofs/artist/91e007e0-195c-4725-91f8-1851cb5cfd5f.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc642e19b44d2b2d475dceaebbf809eb597c0eb57539a8e2037646bd79439fef4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA402000131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca527ecc48bbdfdcca6e397d7c1d5b08dd1026bba74473877251c7b25de9ce14. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA401900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae52af9f092ab20ef7980556866e5faebfa9aea1f9935d1e67fafded4a8fa87. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA402200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0a7763192273ffa5712d2d7070cf6bf3e43722179893fb7a89d7250d6b57cc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA402200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7faa2d54bef4b95019f81650b07c8cbfe4eee7589e53e4a1a94cbb6dcf2091ac. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA402200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd658d94a51764e8efb4f6a568dbc35066736ea0555afcee26bd73000f8ff82. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA402000111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ffbb4bfe6ca179295770ad65e88e9877804bbd30c1dc5e202e321a3a7ddc9f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA402000136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd0183729ecc8cbc24a359421e8a9293f107b4c45bb505b03c23190b281329c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUM72004306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcbcfd7d04f9f42946a101b7d3814fe93d37284977d070e47db43f69401a7073. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA401800096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaffc2a0b722ba553f6521eab4ec56166da05472b5223152e3cc6bf07cf98c7fc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBAHT1800505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4373ea2a58d5c3f78e9e83d716d7960779a38c5448571721c0470e25a6f6658. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBAHT2000703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db39bc07bf0a645a5b0a4884895f3d5a86eaf09aefcbbb66327fc83a86b18c8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JPB601702280.
Sour Candy (with BLACKPINK) - Shygirl & Mura Masa Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15cb9b958377df12245e789fac0ffbcee635f63dc961c46eb1d8ea5ef6619f7f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUM72116163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0749bca462dd8918d008d2d320c8a4b4305874edac24c963c6dfa99fa9b282dd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA402100075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa463a974ae050ddbbf24cf44f6201e33e17fff6074bfe11c49d4d15f9971c31e. 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/KRA402100076.