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 0x6b81fd7ea3651c638cb010ee2f72403d348e47961363d729b2a62fb1621a80ed. 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/9521eaf5-190b-4c1d-8dd3-62e5e0d874dc.json and https://artists.proofprofile.net/proofs/artist/9521eaf5-190b-4c1d-8dd3-62e5e0d874dc.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 0x35cde9b3f879dece2ad84b874df7e3ba73c3371c7a5fdd67fbb698dde10b9d4b. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/KRE131600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92aa34003cc91b1487a4281f0c2652d0c066f889e4ae925a912dbc9e3f1550db. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/KRE131900053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282d32cfb958afe371360e2b1bf5ed6a9dc248026b55326ea2abf523550e50ce. 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/KRE132000151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd0a5302af10a2046e4fa3b681d69add2aa7c8c354c703baf8cd47382d1655a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/KRE132000152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52a6d6d863f423426da822f5e8bca15dbeb59624693da0602c4cbcab1fb0f35. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/KRE132000153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd7d3653a4b53da1e5b57eb8956868ddacc0d50438f44c587087f95a8e75c49. 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/KRE132000154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd339f4e7c97c92b594dd861b89e41c6a0497eadbb56a95ceaaca6b2cd4c38191. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:10:11Z), 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/KRE132000155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60186e423f9f9658a730b8d2c4c18593ec2eeceea62385045d8ef91a813062ea. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/KRE132000156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8007ec5d9c9dd597fb6a17a0d6712e44281af9ac095dd22d9a3db020b30cbe76. 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/KRE132000157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72281f37b4387b567c8f964c69978b5974517348d9af096a31373e2e3bec1d5b. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/KRE132300089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138482b3c71347ab242ae91790045edeb0d635de64a137783a6bff7269017eb1. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/KRE132300090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e53287017ae585860ec2309cc6bf58dc27e84297d7d046175a112454e807ba. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/KRE132300091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2e102ebc942c0b945d1bf4afb78cc4ec462575568cc57442438d2a0ed74487. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/KRE132300092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d15299630d09dafe24f88568ee38c5b043030ce8388bed9351835da428d46f9. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/KRE132300093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f1554e71d66cffba4a16daaac792174adc8ffb481fb47682db54057c2e385a. 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/KRE132300094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f661aa7b5e0a2063fdf3508f39c9bf95a83bb55ad6e0500c1b1001b872d28d. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/KRE132300095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbb781ef84c6787125c3ffcc98c991b727ed947517f6ee23f9247011d15955a. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:34:25Z), 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/KRE132300096.
Please (Feat. KIM HYO EUN, G2 & DUMBFOUNDEAD)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10876a7f13a635509ce6f48d2ddb61787e42942132b2084e47ca78b4e7325d5c. 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/KRNAR1700703.
GRAYGROUND Cypher (Feat. King Leez & Anthony Danza & Keem Hyo-Eun & pH-1 & Geo of Blue Scholars & Chaboom & DJ Wegun) (Prod. by GRAY)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc563078f9fa5f92d8704136fd3669beee39165267e44b1040653a7b43570e4ff. 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/KRC711900037.
Sisi La Famille (Feat. KEEM HYO-EUN, The Quiett)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264d484c799eb65b1c84e7e035d5026c901a4a3457f4c44bbcb5599d6aad3003. 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/KRE132100071.
Please (Feat. KIM HYO EUN, G2, DUMBFOUNDEAD)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10876a7f13a635509ce6f48d2ddb61787e42942132b2084e47ca78b4e7325d5c. 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/KRNAR1700703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7937ce18dcdffc214b6ec3edc3658efe4ce161bc9e63223649121ca118066591. 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/KRB142100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce42f3c75e760582955cbd392cbae12724bed6e1f8baf1b996bf29e9c58c9254. 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/KRE131900080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a92946fa11664e6d853a656a0492b2b3909bc4730e7d199d441cbdd2f47c99. 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/KRC711800054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4d3085cccf2c55799a8dfede5a6dee20a22c30e23b825066c6e252ef07973b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/KRA381702328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7910fb94847556d97a0b16f422fdff387d564eedddb916f2bebf901cd81aa20. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/KRA491700143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404dba9ce165fe279ebfc83bd469b5f5974b661b3c1b15f60f6c084b9e866298. 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/KRMIM2100826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb12ca9c9cfce0103d0a9ef26a55e3c1cd6a4369a94012366111c0a7f1122c5. 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/KRC531900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44966ed8b480f6c1e7a6f1265a01f5a7e8a36b6a2ae84422c76d97f375765aaa. 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/KRB471800270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9b8a933e25ffb97c691b95dd057ea4d2acd429a8f2ca22a3bb744491684cb7. 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/KRA382101330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07fbecbc7c5739bdf6bec0d1224ce36b23b97a04df2ef410b9000cbbd1e6f71. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZEKE1930836.
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 0x6c362a13150c5f75efe71034447db4cacd48cecf2f56264223e41ff80b256963. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/KRE132000083.