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 0xb7505a763231ed3774bf074998052ad340bb97655c01124d939265275cce1a2e. 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/e44fb545-c370-4505-8265-9e4676a3f027.json and https://artists.proofprofile.net/proofs/artist/e44fb545-c370-4505-8265-9e4676a3f027.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 0x2b7d560fec9d84902eaad09dc72d21d1f3b6882ddcfdab28488a13ddeaf9a204. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T07:36:28Z), 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/KRMIM2124708.
Out of touch (Prod. Yoon) (Feat. TRADE L)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b728d07d39e225c63cf766c8842087a59005f17467f5b065ecc10d9612f169. 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/KRMIM2162816.
Far Post (Feat. lobonabeat!) (Prod. Codec)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f5abd7ae083677658ad80823fc7f6eba57ba4a16ff58ce22a52d49c786a193. 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/KRA382206273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9695f8e2af509123e2063118038e3c7831c44c8fb5625dedf20dbdffc96d8d7. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/KRA382207619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a52ac5087adad935f70123f2ed61c9ac2672b765831d16996464b77855a633b. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:38:53Z), 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/KRA382207620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc3f9647bf705e77cf3e389af9f778302653a44a6ced3a3993a20f976c0c38f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/KRA382207621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c9cd5177d5abe53f36d62e66cecffc5fc92b487a1760f8f65fddf6f5ff9d57. 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/KRA382207622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa947df9062a282da281fea7347bbde61c50f095de6c9291c07a4ec1c8a4942ea. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/KSA002400122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef056aec9784b29e795cdefb1cceead9b00a644e340e3f6edb3b4d3e48f2e0a. 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/KSA002400127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2069fbec056422aca08ef38477cb939b55e0767fb40505960cca97c6ccb50c. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/KSA002400128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ae103bff7c1e429d7705fc809f6003e4918c290029ec04fef2668bdb44a13d. 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/KSA002400129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f7b0cb6e14defb7481a46f48aa76a588ece9c6dd3aa063b8dc16589ebcbe9b. 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/KSA002400130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22becec79467d95861b969af2bb59e84d63e03bcaa00d3ddaf9455afbdbaaa0b. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QMDA62441838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59eb4c22089361f0bb68f9282a60b679a03457f0cd5d1e50782348a58ee232d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QMDA62441840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53568f35b0cfcde8bf41dbaba32674e483d35b58ed310ce0b79ef828ebf41741. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:49:39Z), 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/QMDA62441841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc25b58b0350ac133f02823db8a4a0fd7b8898e2006f95a5c601e61867b67aa. 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/QMDA62441842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff1dd93364140919baca633071e39b8eb81c652c1bec89aef4c676e35b02aab. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/KSA002500868.
Don′t go (Feat. Hollow Young, Roh Yun Ha)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1bfcc44a86b710fa7b492b07d3b4247d2f8b41453a7922b2aa39558740d16aa. 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/KRB472401312.
BLUE CHECK REMIX (Feat. Blase, 365LIT, JUPITER, KHAN, XINSAYNE, Roh Yun Ha, sokodomo, KOALA, Jambino, Lee Young Ji, Chillin Homie, NSW yoon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440de22905269ccabcd1dc3cabab0c7219af68ff0dec05538f9c9c960cd44137. 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/KRMIM2301626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd1cd3a282b4016bde7d36f9da60000e394c3ae2e7af06b9cdf4c0e954d6151. 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/KRA382318622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425e82a678bb153403fccd8d2e92a7cfbf28625446298e33ae78572f758404e7. 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/KRA382301489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409f6ca1761ccfd7bce60ef6e3e6a59f262dbc7959927f896c2b2f8385822ed7. 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/KRA382301493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5315ada22a29d8daa8ec1d04fae8e58908b670f0f80068e267d5b8f114a16cd. 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/KRA382302293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b5212590e08dce5741c2152174986a9dcf598f01d61b357bf554781c165278. 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/KRA492201237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0070fb244ecbf4654ab0b141d3a009cd22aa869ceca4e6f77be6210e708dc53b. 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/KSA002200682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599a1c952c5b230005543895793d638fc1f55b5510f52c8bfd5e338bd6bdd0e3. 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/KSA002300002.
STREET SINGER REMIX (Feat. 노윤하, 던밀스, 가오가이, 키츠요지, 오담률, 허성현)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202feec7a30dec33ecdef9ff65473564e5e5f0b344011d7039df6dae0673cd71. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ZZA0P2313472.