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 0x6d30bdb2c502cf8f49bda8a2dd497680c140c27d8a9420fa90f6575c334bd404. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3815e856-1942-4720-a8b8-f96d963e58ca.json and https://artists.proofprofile.net/proofs/artist/3815e856-1942-4720-a8b8-f96d963e58ca.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Deficiency of serotonin is the reason 세로토닌이 부족해서 그런거래 (feat. Donutman)
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 0x6938c5e30ceaec11532383074e219a6c992cf8e536b5f502a330a2dfbea3171d. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/KRMIM2010997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389c84e28b6c959cf6359f2c0b340eaf15d6ef5626d505ebde859c6dd4acbaf5. 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/KRA382006443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b999a15386ebc52fe0e592a17f9c17a33e2681f915639ee4fb03ced5091a6b. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/KRA382007198.
About things that I've missed (feat. Rohann)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989ed997911554ea36ba3aa4bea38f9f43fe11e6a20f555b3332580394718505. 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/KRA382007190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6995aed7d37107ecddd99a7c9c51305dfc9ec2330db2bded2c52e38bf393f5b2. 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/KRA382007191.
Deficiency of serotonin is the reason (feat. Donutman)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5188bc976e1d11bcf0643cd7582b428f34484b513e3c5bfc3c1624a5b35750f. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/KRA382007192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83f2452303eed4d85ca23916c91610f6823ee02c9d3c6ce9bb96596a463e846. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/KRA382007201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b0ad0b1b9c68d23637e49f502ce7e0cc52a926e8f4fd254d4c0e40c09d5c41. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/KRA382007194.
How far should I go to be an adult (feat. Wutan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b97febac6a80bdfcc3aaca676a5aa11e37d3b4403e298cc8c09e59761a1a5fb. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/KRA382007195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe21d5e183f9b2c093a564b5286f62e9c4ef586205d1b76d83383342a668dbdf. 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/KRA382007203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d70653363f94114e025077e30ab79e0595d9b168ef4595f50cf81c8fdc478b. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/KRA382007204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae60a4208a560ab5570d0861cc172e283b0def47d332c1a86693d6126635d96. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/KRA382007196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaaf982615d2f9b4eea9bf048b4a87b2769974aed17b4e704673bb2b34bae40c. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/KRA382007205.
Now is the best time (Feat. Jung In) (Prod. Neulbo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebadb61fc93c3b1db6a17598de8de8df7a6043977ef2e05c292ae09527272561. 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/KRA382301607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2079b2290013efcd19a019944f7e4b02a69dcf9032ad664f6ca2e642903de5ac. 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/KRE022400004.
All Day War (Feat. Brown Tigger, Gwangil Jo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb90eb4d8f66af40c51f37ac8adfc04813dcc5e10fa717264395b7f7bc1265f. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/KRB472001290.
YORK (Feat. Brown Tigger, Y1ee, Hash Swan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82cffb370643b37c60d4a0b9c2a60a169a92c39749cf22fb79ce49db9ca7455. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/KRB472001291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceba79f5fdb080cb496a5618829417de86070b7a5e7855108ea7ef77b1ff365c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZEKE2017125.