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 0x2495cd2cd9608faf4c37296ad8787afe814d6f5c739f8125d14b52852ecfbd5a. 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/a9020b36-1f5f-4941-9765-e0d454c7aae1.json and https://artists.proofprofile.net/proofs/artist/a9020b36-1f5f-4941-9765-e0d454c7aae1.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 0x9006a4ebb8e405da0aeccae30924782dbcf30f21b3e90f05ab487b7ec0e6f031. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZF452001888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec9db9a7144f8aaff86f49ba79cc915adca10fe91774d8ac45812fbf0620491. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:38:10Z), 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/KSA002100519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1bda7c8d2124456fff0450394bc67e7397b9c9b725956f6e812409945dddff. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/KSA002100950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c214102828ce556ed2f2f8aca66d397665577531c6580f0ee779910be9662b0. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:48:23Z), 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/KSA002201512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599a1c952c5b230005543895793d638fc1f55b5510f52c8bfd5e338bd6bdd0e3. 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/KSA002300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc4a0c8776e83f7e6ae477a5f33b42cc004f14413e23b0f35a0b062a0ec8359. 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/KSA002300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393634a4489957c7ae4410ae0df407d8fc6547a26cac7a2caf5ca8e45f26c6bb. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/KSA002300003.
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 0xbabc3e317ba68d718bff0c3657f5df430c423375e9ce6dc90278c50363a409d8. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/KSA002300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5564159f6101a6c574e3b481d16aef7afb1be632a3601e7813f4c1ddead1b9fd. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/KSA002300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41fea636226dde045e56be05b420e32936ec9d823bf643454f5927d906e8a4a4. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T10:25:09Z), 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/KRF632302974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7b464d55997711254f715f041dfcb1a1550c8b2f4f2534b334fa813784de78. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:39:03Z), 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/KRF632302976.
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 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/ZZA0P2313472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032d55b3f48c24adc367de001e4f445021952d3609f0d9150548b388b901b3f1. 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/QM6N22408663.
Shawty Its You remix (Feat. oceanfromtheblue, Skinny Brown)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c7284bc639615d7eb705c674c3c6c3c7d25a1aa215dc5b838c91b1e8fe5841. 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/KRMIM2507243.
Swarm (Feat. KOR KASH, CHERRY BOY 17, Skyminhyuk)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96f3136bea9b0fa73d0f544aaaf75c2c4893e2f9e412f0e11cb2261d7374546. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/KRMIM2460253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849ff429669e383a8c7cbadc307e416c3da607d44f9bac94c7a7e80738292a1e. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QMBZ92448359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9241f9ef4a0dce9792fc5cdca097aa560671c0699047c043d3f688b9db513ca. 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/QMBZ92448360.
Smash2! (Feat. CHERRY BOY 17, Don Mills)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4022f2704dfa0535600844e25f86ff5cd91c53b5edd5dcb100a78e7573db3e. 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/KSA002401088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bffe6620c6f28ae2e538d7b69b7acf07d04025ca8c494731bda57e42f501782. 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/KRA382400781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7240d4fb00cb789261836ffc85d16f423f7992e132c51bb086e48aad6634634c. 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/KSA012157479.
Ouu Ouu (feat. unofficialboyy & Lil tachi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51526d62d25852601f91ddac3dd746cdf060a4c8bb584d8eee97eea49ffe095. 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/KSA012153814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28130afd1e700fb2fe7cd8fdf194439a2ddd1d9dd21e80c33f6c8ba87dfc4c6. 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/KSA012157469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd06d186e33a95be9cc00bb548af737e18ceff2b96f5bd8a140a647b11b0ce4. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/KSA002300940.
Welcome Back REMIX (feat. kaogaii, D.Ark, Park Jae Yoon, kitsyojii, Hangzoo, NSW yoon, CHERRY BOY 17, RB NINE, Benny G, TRADE L, Roh yunha)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1eae4b15c6737fd77d30e86bc48e59204bae494efc8d72f4d0c495c86c9f7e4. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QM6N22423562.