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 0xd666fd464772338b215d7db36d3e0f07d383d8286aadf55d2af297aad38e17a9. 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/73cf46b3-cdcf-42e8-8f58-48cf616b3274.json and https://artists.proofprofile.net/proofs/artist/73cf46b3-cdcf-42e8-8f58-48cf616b3274.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 0xbc3a08da9a643ab799f6263dddbbe53293f823735db95f69cd62e6e59addaab3. 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/KRA401600211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ab49967b492366693b31a9a4b41e44bbe9743bd7dbe386b74278a6db5184f0. 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/KRA401600212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4974cbeb23046375ec890801e94241d3ecdf229aa497fd4913c5f6b9a8383d0e. 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/TCJPC2446845.
AKI AKI (feat. Kid Klown & ten the World)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d0057d4ebceb655665d9912fcf34ef6377bf60211db954088f6f17e6b07da0. 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/TCJPC2447290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46d0de1e0986b0b86a07aab5ed3f28b9e773dce869db1ebf453dc384600b1f8. 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/TCJPA2489644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa566caca011bfe90f14999f92d3d285745b8f726552dff9ebc65831b6d6a2a24. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCJPA2489646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc0d0d1174fb2102036d00f131b145cccc23c95872d7e5cbb38d737e53ac4a4. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/TCJPY2490947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06afa53746d81aa80711f83f57dcfae2c28ad0449d6be699ce306938ee7e58a0. 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/TCJPY2353024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2ca714748902117ba8e1b26b7a5e2eeb3a156a1a79307a6c78ccc681d2d56b. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/TCJPX2316915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0221d8f663a5158ef0dc71b6e3318d1b82396b6843ce2435cdc95599618aeb. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/JPB601700127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1d41ee4faeca0fc980ae756b27962342463c95b671ec342d97a8c8e41c652f. 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/JPB601700128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x673a7d5fbdd96f4c13d2f7b9a8a165fadd3836edd2bac7d97b1609d8820bc8e7. 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/JPB601700130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0321ba82adab3be42ee923a4a8dfbcf04600f1e6bc3538aa10504f0c2a410d. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/JPB601700131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6423b9bc3722a420b6e53591538e8c0cce9658b7c994c01f4484205b7d5afa. 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/JPB601700132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7897adb0d595edff917ee3d638377f88bc9daa7dc358c47b3b0736a02b128dce. 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/JPB601700133.
FULL HOUSE - KR Ver. iKON JAPAN TOUR 2016
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d78944f62835c4d64620c41b1e489d008df8ad8f207678530392a69298ca24. 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/JPB601700134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33bc03ab8db4f59444a2e9f6ff4d02ec9ca2847dcc4e88b67e0f2dbff2309fa. 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/JPB601700135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3266fc4a7c0129cc1b7741db3bd525ae919472bd5100c50ecd261e064c77e6b2. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/JPB601700136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf730bb206fb38d430adc289a7af86367ec2f5a2f301147534151e07cddc54e7. 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/JPB601700137.
I MISS YOU SO BAD - iKON JAPAN TOUR 2016
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa792a166c23c3e84f5bae314ade0cd34004df364845c4694e08f9650441b5464. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/JPB601700138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a69e76c8f9b41b0d025b610184012d0e28c3120ad6acfe3d4cc297f1ee8c12. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/JPB601700139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8402354ee242c76d83f59ed1decc96f4e5a15fb5b5f1ac12eb02d6a79039c295. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPB601700141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2fd51fba0bf721ac9a094cb92bdb5ccfe2ab71a983198f9c2cc3ce871fe5bd0. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/JPB601700142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00f546648e151ae2095942d607d84d367564da28a207467111dfdc3cbb88e03. 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/JPB601700143.
RHYTHM TA - REMIX (Rock Ver.) iKON JAPAN TOUR 2016
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae8d460d5833533e2d7ad3226d46a7b8292a1f432c20f1aac069c17ed14157c. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/JPB601700144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d179628d2e709d8caec4698f85ffbd0e4dea03da6c8bc046c64386fb0ae41e. 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/JPB601700146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb50d4891e7ff496296534c94f71f4ca50213ffaac0d8d19d6233334532b45d. 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/QZNWV2056718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e370087a3c0a4423081058d747e94ea91d9eca65e310bbdab93f33c0a9e313. Chain 2 (Bitcoin): anchored in block 960355 (2026-07-31T05:49:18Z), 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/QZNWR2074061.