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 0xd94e359facebea92905b31f8e1c37a9b1682283e31e078d3504b2abc4d9da500. 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/b05a9fbb-ed78-49df-83bb-905d93c35856.json and https://artists.proofprofile.net/proofs/artist/b05a9fbb-ed78-49df-83bb-905d93c35856.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 0xf19713093ef6e6ca399c7c1a15c664ca2d1d80fe95805a3bce0c054cd2215569. 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/KRB472101277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3fa1252615b8896546d8540e1fbcbf777fce78d75dd27a4b48c9156a7b81d34. 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/KRB472101278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f83d471303e5413b9148128ff14c210fae21338b7e029afa2a13b2605dbbc36. 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/KRB472101279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38dc981c0eecc325301d23eb7e23239d1423a5e88ed4b52cac6708dd6c6a8d6c. 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/KRB472101280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d3fbdbb8bcaf3e6985f17943cb15f69a34683f4a0fdd4683a9435b46e5df22. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/KRB472101281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40fa7f514674d7752ab4b39320e65e739d45bc98e11cb24e8623dfd0e596a175. 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/KRB472101282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c409e765cc3cb6a9274a72f35e96bb28ab86092ccbec6de1167af5a5ffcd0c0. 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/KRB472101283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c940471fc093471fc396436cd85ee0df5601d6ec2af23c2c6bbd00b24232aa9. 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/KRB472101284.
S+FE Day (Feat. ZENE THE ZILLA, Luka Lavish)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9148a87ced74e6603657c70275d9dd29292c4f9ae8d9257b192b3af6fa34f2c3. 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/KRB472101285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e02b80fe05a6bacd05e9135ce5edb031be2a35a9e542bf9949989ad40aeffda. 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/KRB472101286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ec928b9471326f11b5888ffef320baf3d8e5511761aab70b9eeda428a914cf. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/KRB472101287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f104bdbe481794475b6aaaa19e89472fb882766054f302cd7aa3370f1246e55. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/KRB472101288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2982d13a52284d9680f74eaab86484ffbe16f9f65cf28934e4e3e2635faf1d. 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/KRB472101289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc91028c81e7e378d9dbc03545f7ac2a0e6491d69edabe88ba15ae65be50b29. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/KRB472101290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ff444d428ac91b8c3acba48db970b90f5ff73573f26d7a1da4b029f1610fad. 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/KRB472101291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e61d8f8ed99f5904229346b7f7714a7094697921265c287163d2e0de3b9f71. 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/KRB472101292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe8e373e1456421438287edab4751bf316bdf0998db627823e211a08a57dd3d. 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/KRB472101293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d3c9e360b919b49a9b6f9be165f7d927258bdde39d40d6ebde28c351fb7e11. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/KSA002301762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84657596415786646bdceef65c1097a41b221d2b2bfe7cd5c0db81e5ef007133. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/KSA002402844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322e79570e5ca2bf6adbc034c0d49e78e32bcea8e28f5101aa0c45a8aa12c08a. 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/KSA002402976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c4ab993cbf00f3e3b9eab6b4326eb1e46e3bfdc8578899ce7dbeb86872ae70. 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/KSA002402977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ae1896400e48eeb6cf8b872f8a240883c83f09582bc580d4f68263744c3fab. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/KSA002402978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079d8f8247f0baf314204d8f200191edfb7562836cb1fc9c440fd9bdde23abb5. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/KSA002402979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60cc77a4c329d6adba7cb71c272f274a304a89c7ef16675d78e191a5a9be33de. 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/KSA002402843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101a13084ee3de6c596d2b821e792aac2873141612a725f3e013e6313d305468. 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/KSA002402983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9195a960081ff8dc37f940128f4c957bf69f3312a489563951345ce278854642. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/KSA002402986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2b91fc682a4a9c3af8dfe7ad311b6ec1e1220720697b2ad92fda868ad10d2b. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/KSA002402989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bfe5a3e3655a9fc32d676bfa8eb96277ace403e55e8a3bf9f34726450042d4b. 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/KSA002402990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94a8cb9560e037456351c5a45dd0fb225b3715c52d65bd973bad3b4d402899b. 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/KSA002402992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6844a7c457344d9cb65deae7634672b728bb30e979d0407ff97322c5cec170b0. 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/KRC632300015.
Swarm (Feat. KOR KASH, CHERRY BOY 17, Skyminhyuk)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96f3136bea9b0fa73d0f544aaaf75c2c4893e2f9e412f0e11cb2261d7374546. 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/KRMIM2460253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633135ab74ec79b22714ccc7406eb41d245479c21cb834ed403a93b91f074823. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/KSA002400355.
A CHANGE IN SEOUL (feat. Mckdaddy, KOR KASH, Lil 9ap, TOMMY YANG & Jeremy Que$t)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761cb6e6c4272f3d9a44e6fe5f4e2d053cce8a5ea9c886abf22517e0e36cf1e1. 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/KRMIM2021139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac22872052c0e8453ebe2c0bc567a51cf0b61ca0e7bb9824f26dc5398810809. 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/KRC632300008.
MA! (feat. kaogaii, KOR KASH & Don Mills)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d415210288aa482dc712e0f3047b34f000f21cb765bfb5676540dc5fcf967e2. 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/KRC392400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91c83274bc2c768d0e4003e920013bea137b56cea2bf6b95db22423e047c552. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/KRNAR2341066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879f91f399f8c3bc5b3f17e8c3a89f4fc5dceab425510327d013f716ca68ed3f. 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/KRA252400772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa50393b21893034114b3ec79e10f9205160d45990fd58a16230124affa0a0c0. 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/KRA252302147.