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 0xc6db91bbb1772a589e9025f10b6a8077a76bc9797c893783509f50b0a9d17d2b. 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/5e2e1311-f4db-4cb7-9380-2aa8b8e7f189.json and https://artists.proofprofile.net/proofs/artist/5e2e1311-f4db-4cb7-9380-2aa8b8e7f189.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 0xb25994adf8af1c273dbcede66fb1074cf9e6772367ed62761ad2928fc40835ad. 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/TLVEM2402704.
Raspberry Monster!! - Vocaloid Otakus REMIX
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976541ae5bc8ce80721d7a16a3f21a325bc5ae78c950215f6b09bed6ad5ca480. 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/TLVEM2402708.
Systematic Love!! - Vocaloid Otakus REMIX
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b08c32521ce8e5534ace6dcc1c49d8cbbfa14d4faf6e72a1f81f271e58696d. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/TLVEM2402713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7085477002513263192a49ba537954cfe2142ac3732ddbee02cf085bebe897f9. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/TLVEM2402702.
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
Kimi No Taion! (Your Heat!) - Vocaloid Otakus REMIX
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ce3c466574b8cd73ad6ccfa793b768aca9921aa0ee1d76de974bf4d1c499a1. 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/TLVEM2402711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46dcec10bd180c9478ec49d29b2ea9a9a78577b0767f154bfdca13de7e4cbbb0. 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/TLVEM2403843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad46b1bec3df4e15ab9db0f09a0a5260a92976d29520b4d8e045065b253edbb. 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/TLVEM2425088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27929ef9f6f91631cc5b06a3e9ce5c395e85dc77f54e36af5af35de1faac3cdb. 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/TLVEM2425098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80fb8c5af652ecd4348c2f02208ac6f89efbe41c5ba407b2f0d0f0fbb1f56a40. 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/QZK6M2143536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ecf9fbb83817b3a88e5252dac5b5b02c296b0599d0355e68c65a5cbc46021d. 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/QZK6M2143542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6f1a539e33c9742bf218cf3096bd3a5f0b4a50b77d62e0ee9cab7819a9279a. 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/QZK6M2143531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed4819403b448f0bd202f610b09f6022420b703f7058725e913ca85093d66d8. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QZK6M2143539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42726d50fcfdd0530f426949ca094fea8689e4235f17988b7609f538d55dab4. 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/QZFZ42130231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6688938bc40708ba7d8127edf2c846b068feef70b43bfa1ac928f3fdbc64e697. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZFZ42130233.
No Jumper Freestyle (Vtubers & Lifesavers addiction)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da056febfa39a147dface60070c0cac7ee095f3ee1da94cd749d92ac04cdaba. 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/QZHNC2569777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5289a99e0ef83a827840cba502a8b60f6a36ad005ca3e1260562344a5eeca99. 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/QT2VB2508450.
Yameii Vs. The World! (Lost Otaku REMIX)
Yameii Vs. The World! - Lost Otaku REMIX
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d39d8243ed7356153767af211f5a8a8f319b0cf0e8ab7ed07c32f53a3207de. 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/QT2VB2425430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aaa7937622bade03a54bf47771035ae245b3f3a8f5e545254f681414343e538. 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/QZPEW2415034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f004ece82ff7dcf03b588c6f178071af9a7a776ea64965cb25c92030b6648d. 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/TCAHR2344381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3c9aadaa73e0a31e14a6b246aa9c58fa444e6bd68f3503b86cf976a03730e5. 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/TCAHD2397372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18417d200d1f23c2295da9a8378740868cddc88aee97405bbafd9f99351a2e6f. 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/GBKPL2281169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06124fe9a4f104887c077fba256c36bf940c7616461370407e63e92d6681117b. 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/QZMER2130278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac69a5e76fe04afbe940584eefcfa0f8283d35c79aa351bd7522c11fc7a1f514. 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/QZK6J2172430.
I've Been Killing Slimes For 300 years And Maxed Out My Level!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d98b1c5b5cd58fda97eb6cc9a86817aec1235d1adde4a0217fc2bb6986644dd. 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/QZHN72110897.