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 0x3cc1da5e3be5c539965a3f2b2988884c0eb911e33469c2e5253debc598b491ba. 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/f4be7696-e2b5-4bd0-8ac9-ba8d01fa2933.json and https://artists.proofprofile.net/proofs/artist/f4be7696-e2b5-4bd0-8ac9-ba8d01fa2933.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 0x4ab5eaa5483fb1328af6189311e8f84d4369268d90790cadfc3ea16eedb0f0bc. 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/JPW562106536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ee7aaba1dfb6c2b6b98e2d0987c2a8addec490c8bf46436f596bbaa171838a. 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/JPW562106537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4194fbb2541b5176cb0374946d3e0af99f12da3d036bdb78aeebe5399a305c90. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/JPW562106530.
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 0xcfd0f372a50da40b46c0462347ac1bb7a843ed7c5ae857dbecf4f05b1d4915cc. 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/JPW562106531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1cf9d50e95c51bdf847df1758f915016a6d071920320531ad73d4fa9d442e6. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/JPW562106532.
POISONBODY feat.Mei Ayakura [Tracy Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb99cf5e35029f0974a355715f7d7ddf08788734233b43ee42dfef8725dd403. 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/JPW561904494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e70e6e9f553ad19d89136952b8590ebb892bd10a42deb8c13e9611a8d0b1c4a. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/JPW561904487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4ed292f5a0f11283fed329a6f179feb0139ae81559a8e0609d84b259b96b76. 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/JPW561904488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980a67ddfe947b413d21742940adc0aaeb2651bd564a9d9468a037baf1e27b63. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/JPW561904489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc42c2ff84ca7189973d572293337efe57661a63fbac2be7b64a0e64d080ce3. 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/JPW561904490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62abe9910aba966ee984ee432310007fbe307f0fc6b372e4c554281398107e16. 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/JPW561904491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1031bc2f701ce890134cddf508822e807bb1ad48120900f0f540ed0dd6924c2f. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/JPW561904492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec38d8bfe27eadaf37510ce4edcfc5c01ec17e57b9fcbfcbb518da159fdb6b8. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/JPW561904493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1ddf594b121a53b725eb59aced5f6d083602435d0fea41f98e407883fe0fd4. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/JPW561904495.
Special Smile feat. 築山さえ [Eurobeat Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b63043913acf7dce46eec7e86ae95c9120f2ef83474a77096577001f00d3b7. 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/JPW561904496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e4a552108bac055ad9970071bcee5aa039c9021684ffa6741f242b34b4af11. 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/JPW561902534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47d357b9d34aefa9d3f56b25e555a1b18216b3aab0f4b41095188b8f434c0a5. 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/JPW561902537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7af89008297f1c41bd8093eb28814e8437a9e18ad9321b2bde221aa520afeb. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/JPW561902538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5516e3099502e038d8304102fa0cdd3b090ea06468d4a66b336269b6dea1917f. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/JPW561902540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f8c06ca1e26f10d160eba19ea34df7d84c8f60dc3b3c48894e9d634572ccd4. 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/JPW561902569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6dc5316fc80076f8ba310f3f788bf1f1039466f19c771cbb3669b20daba2b76. 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/JPW561902572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2eb47c0c0666ae2d803bd867e6fd19ebe068c572d3804690ddf4a70285d2fa1. 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/JPW561902573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d714bc54fee4845d165150c6b6db0ab141e32a4f0ec7ac4b56ccb0ef9a8701c. 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/JPW561902574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77c8ac1eb34dd36f8e1d49540330755f0949a1769e1066fc849eef2595ccddf. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/JPW561902568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237ea4222d6012b38d1f19c0e5d8cf72c4d8c001893f9d9351fce9fc24c10c3a. 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/JPW562104661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb82962b560abd095c3114c3749bbc42bb406d79f7006a808943c302a532c67. 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/JPW562104662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69bfd91a7256ed7a56a91f8dc22ca996e7a2895bf578fbca283c916cc218662. 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/JPW562104663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc2f2ed7dfe28dc9c687b1ccaa1d10024226add7843c2ecb7b410cffc8dcee9. 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/JPW562104660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1849c762a09fd032152e74257011b8bbb0d7b1238e7d74457ac76acefaff48f. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/JPW562104666.