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 0x898a17d42913275b4f4bff9832fac1b59f9884d02ce7a2be4dc3ec881af5c3f4. 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/5dbcdf96-35ad-4f20-ad17-ab3034b15fdc.json and https://artists.proofprofile.net/proofs/artist/5dbcdf96-35ad-4f20-ad17-ab3034b15fdc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Blue (feat. Lokid, Tamiz, Saebyuk & V.et) [Ohmygenie & V.et Remix]
널 떠나던 그때 그 날 (feat. 키드 와인 & 줍에이) (prod. HAAN & 바이빈)
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 0x9374052f571a3143e96e1b57e7e41bdb21d05d221e295a3da6c4331647821b91. 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/KSA012287526.
Like a falling star (Feat. Skinny Brown)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59805fa05a526235d337d9999cf7284472d0d0b8ac21def6aa94fdeecf254fed. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/KRF632402230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b39a9c528d217607fc817e5782dd0f801f4176caf8ad9317ed1181a8d1b940. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:06:33Z), 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/KRMIM2522366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc955d9228c5bbe4d51527a4a870b14efad85976e708e594dfee4b35d04454be6. 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/KRMIM2532792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2233feb06993ed4096b5e3404e0e846d4eb15fcc6afbd50e31df18a2439497a. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/KRMIM2544130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0052b4b6fdaad6f97a4a667f005d02546a954a4a324c93a5df1cef6eced924df. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/USDY42044840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c4240dedb4f0dcd272f442774e2fac36f015ab2ff0b7115daabe04bc6f199c. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USHM91950381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102d4733e13b94497104adaa9955111dc7d9a3e6020cf284e771780df534c42a. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/USHM21934461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca018674f1d3ec992e9cbf6a3c4316c323fc33d2a7acabf8395c228a29d00d2. 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/USHM21934463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3bbacd21266410b34b0894f72d0dd901cdfebe401b6cfb8cff1f82fee26544. 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/KRMIM2203175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d36fe4841315d6be40dc7d3653a4f6cdfc886c3b13bd9e1d271a10f2a88be20. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/KRMIM2032060.
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 0xc33b6466695df9b8d4614f06e688d5b095e58c7310b1a0ace9d0f7e6095b25be. 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/QZEKE2017130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c96600eb91b699f2aa827fc41e06e920e83be55ea631bdb09d2922aca7a09c. 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/USHM91950378.
You've changed (feat. Taeb2 & Jang Hannah)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19c3acb75f485cb9dfe2148ea0ee5f07d62a232f8d9d18af706f83f101753ac. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/KRNAR2355058.