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 0x386f84e4612327d39ce6bfba149afbe8c370fb149a2d5163b0a446a7dc3d7ef3. 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/3960bb00-ed5c-4d12-a4f1-0174e5220caa.json and https://artists.proofprofile.net/proofs/artist/3960bb00-ed5c-4d12-a4f1-0174e5220caa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
10 MICROPHONES AND DISTORTED WAVEFORMS!!
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 0xa97b9638a96bb47e7b6b725b593d8de32f53789014ce3dbf4896462dc5f8a31e. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/TCJPS2291359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425ee6f5a1a72a25bf815e66074f2660d1ac43b192dfb308833152ecba916a2d. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/TCJPA2470027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134d067177ce1ae941ef469c1d20faaab3ce3bc0b3aaf2debf857cf228d58c09. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/TCJPA2470072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4988aa113bd1ac38f1fb3c09efc0bd98686ab1c25919d520f4cb4c1903566bb3. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCJPA2470104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc16a6920c725859f5bd7b0fa85b34a13e1b0bae6c5e7ffeb31daafbda29b630. 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/TCJPS2287253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09949ac4d00ff4371388cdb27f0d096bc30504f2b36ccadd34a9d9c0ebfdaf5. 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/QZHZD2069471.
アンチサジェスト - Kabanagu&hirihiri Remix (ONE-MAN LIVE TOUR 「時代」 in Seoul)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e46d6fe8e38cd4acae67c39667427c97657c9d2b86be1dfad8db93cf7cb748. 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/JPTF02330809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dec8499e7d7d0a850d13da37f74580473bfb38a0a07ec060b4988a24c15a72c. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TCJPV2350680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559a54a42beab77f02b6c4282df66fbaff5633973c1ce852a438248ebd55e6e7. 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/JPS801951844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54f0ff97123e967c46962faba18daf6a070176938785c11d0286e22fb2329e2. 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/QZVK62200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2b03b548cf59dfbdfa2e6d95fb89ece463fc90c13f819522e5ccf495572e11. 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/QZ5FN2151107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bbb798f57b5c3acdafe2a2cba503bc1ac942846a8e384d377dcdf88a8c581dd. 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/QZTB92295060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b2d60e5c3854f331cc1458fc29e23f065c82ca7ba632ddfd6ba93183dad6be. 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/FRX452228696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c2691e747133b2d50186de2f6508667e8e11ff5009d6a14a0399c75bf949fd. 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/TCJPB2444427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f75fd6c545afe72664f5e88e0b9658438f6a9d53539021b647ad30fcbad5ce. 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/TCJPB2444430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d7c0c82fdfe3d556a172dd13b7629cabccc7fa639c2a06b526e28c37653481. 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/TCJPA2419700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf5e145fe78676d4c0158e89280b5ce90f7f1006bb62efb3e141dcc0daef77b. 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/TCJPA2419706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67c35452632da61cac3747853ee3f8c428f2fb1bdee7af9c7e92317cdca5ff1. 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/QM4TW2323947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602e915d976c0331108412375f6b8a4e086041549175a4a3bd146f84306d144c. 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/TCJPX2388931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4111e490b5773008a086429e142554718ab46c71144b820ee1c5f3369d38a50. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/TCJPP2121792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa27daf929e9aa66f6ce8fb730d4dcc182a82c7ffada582bc35d737da5ce1280d. 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/TCJPM2067801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6c546cd50f8a5c5d2648d491fa9a6bcbdde99bde68fc617323f144f20a8431. 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/QZFZ22106627.