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 0xdbe6e679353502521e95052089d5d08ccc629695008d2d78d23a056ae46c22b2. 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/6f21be6c-4797-4e04-adcf-8a45f03af9ab.json and https://artists.proofprofile.net/proofs/artist/6f21be6c-4797-4e04-adcf-8a45f03af9ab.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 0x5acd2e8174feae1e4ac4a5e76119b387f58276d491e2c8c879fc5fc8e3688c4f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/KRC391800003.
Cooler Than the Cool (feat. Huckleberry P)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337e3da6947abdfe253cc69f2859a8b1cba95f66beeb73af1389f95cf1967e86. 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/KRC391700033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301c5326c71dfed5c5ec2f8fdea21c1308e5886803736e90a8fd913ac7364c0e. 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/KRC391800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1ff5a3eb18c9072ebb1c79b8b6ed1e8b1161ad633d840325c2cf70af55514d. 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/KRC391800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4492dc202ea3e0d000e1e2619385c15f43b5f80779b45b7addc9055631139b. 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/KRC391890001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8531d195c9d421fda882910109ab4329635f47198e78662c433abebcdffd80. 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/KRC391800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d7152a8d72888c783a526669b1318c2f2bbc219341063f459b3ab839b01c9c. 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/KRC391800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f655a741b87367ca4128ebf3def6c72336f6616dd0b08fea159be393be6485. 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/KRC391800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb32e10df48349182bc21d59d478b9567c7a82418d823b1848d4c8ff2fee9e84. 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/KRC391800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0464d74430b51e3723d6ef81a7582be3e272231e4e46cbf2fef3344ac015145. 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/KRC391800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962c854d6f4e40f1c87a5900909642ce7ab83b95289d9aa7d892ffa72a00fa4e. 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/KRC391800019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b68daddd4859ee75fed0aaa53c6520b72878c6b5d19bd4e1de15464158c019. 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/KRC391800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4504a51b9447ff8404255f4d5555e283f15b725b302a65fc8f8214e15d668d0. 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/KRC391700037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf72e5382c463aa6db223a0d22456171ff5edbd1968b7ead3cbba629bee27ec. 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/KRC391800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8a1922cdfee55a43ed670a9866ebedec97bb7729e292b15a024abd4ce5b814. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:35:16Z), 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/KRC391800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa599ae96cfebc4ad9435241e1a59cf1b14505e5351c870ff85929319663674f5. 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/KRC391800013.
4 the Youth (feat. OLNL, YESEO, Ku One Chan, Cherry Coke & Minje)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb853b5509a8aa2ec5295178dedbd90c55812b519da6ff83ff3f9181965609840. 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/KRC391800022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d75b786cefd6a22361b247d0e6a8bf95e57461c58c5aa22ea03c6a1dfff664f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/KRC392100005.
Lock Up Remix (feat. Swervy, Kid Milli, DON MALIK & REDDY)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c5969c65c36ed9951967533acd9d19ef566c4d3d29a85b460b9cd373fcb217. 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/KRC392100006.
Wayne Remix (feat. G2, Huckleberry P & P-type)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff9196a446b8df4e24adfac32bc66b0340d930da5e5d9a3869c07a72d858d4c. 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/KRC392100007.
Yay (Feat. Youngji Lee, JAMIE & Paloalto) (Prod. CODE KUNST)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6448a0d58f95e10b1c80638a6bac21f8719dbe260f27b7706605b786f32a7668. 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/KRA492001569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b3891334d27fd873f1f2d8a4508d5a351573259a96b1dd8ff506b76f829a79. 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/KRC712300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd73d6edf6cd8c683ccb5070e0422082ece7ea56a717897f281eba0aa09be990. 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/KRA382003387.
Mask On (Feat. Paloalto & Coogie) (Prod. CODE KUNST)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c06d0b7d1a797a55223b832b508fa16a5b2060c5a8f6d52d961768785daba2a. 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/KRA492001472.
Still Hungry (Feat. Mommy Son & Paloalto) (Prod. CODE KUNST)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5cb9f4f129335c00039f42e1f4340918d9a47731e558e66b792f3d8b09b86c3. 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/KRA492001568.
Rocksteady (Feat. Paloalto, Dok2, Beatbox DG, Beenzino) - Korean Ver.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa7ba0aa765a598a22d370836ce7f7bbc90508eaf5a60511402fe8eea23448b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/KRA350902022.
8 By 8, Pt. 2 (Feat. MYK, Minos, Paloalto, The Quiett, Verbal Jint, Kebee, E-Sens, Simon Dominic)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ee3fd8cc2abe35ca200ccf1990de46e08b3ab3b1d6f8f35f15bb268b25368a. 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/KRA350800706.