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 0x30ae2b176cc664d28fd71f55f4da26332a5d9fa5b12920a67969a8f690aedefa. 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/68e0f7d6-3e50-4fea-9752-64703ad7efc7.json and https://artists.proofprofile.net/proofs/artist/68e0f7d6-3e50-4fea-9752-64703ad7efc7.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 0x9084f3093dc7209d93f7f14965d81d0f69c49afc12b83c0fc7099ef610870330. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCJPW2330221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637c3f53cb310da9cf8b2393d1d91be07f6ea881f628aebd91405fb715e5a869. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCJPW2330237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab0d1433100c01bad70198099c0ae5e0e0972a51df290f69361664d0ff3162e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCJPK2025083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f27097649b63b9dba579eda270463676ef5194928e47bfed6c57763fb035eb. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCJPK2025087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54298ca71d3a7e09b153626874cea867cea0d591ffdfcbcba46414e56a8e2431. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCJPK2025088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87828a5923971ab53df532c5e57ac1f5983d67736c274913d571f6e9e591fa2. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCJPK2025089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f226e151acd6329e63cf146b7cb7e3a364956b86ace51c27d275786571f07d. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TCJPK2076396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e22f477c0f3ba59cdcc5c118a1dec3b8e27bfd19e9bf8d8467b14c5414e0b92. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:09:02Z), 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/TCJPK2076400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67373e633de89333d8006fcaa8a434902737686b5d269651ef4b1bbfebed24ca. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:36:41Z), 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/TCJPK2076406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48b6d259665d7678899c99fcccb9375d78bcb11ee8aa0d73dcf1b50bfddc571. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:50:34Z), 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/TCJPK2076408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7bd88101141fab667dae9c10b996efda795ae6e6e575e61bdc22f92e6cf907. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCJPK2076409.
KANON69 MAGIKLAND 2019 (Live at AKABANE ReNY alpha 2019.10.5)
R-18 - MAGIKLAND 2019 - Live at AKABANE ReNY alpha
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216ef0b6fefc8c56e97543de232fdd29c9d300255785a4cdda7a125542ccfed6. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:46:22Z), 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/TCJPV2350472.
スパイラル - MAGIKLAND 2019 - Live at AKABANE ReNY alpha
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a66e8c05253ada04c483522314aa935a36ff337396835139565660fdf9f58f7. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:46:35Z), 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/TCJPV2350478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee14fc55efd3459330f1d8867cf065d4226852fd9ccc388c127c2fa0f35fa655. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:50:46Z), 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/TCJPX2305431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f6a7574d16651fd1b56b5763ce37988a93112087898fd320a9a12fc44f5956. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JP92Q2502011.
巡音ルカの知らない世界 (feat. 浅川悠&拝郷メイコ&風雅なおと)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e8f15dfc5fd8ac4e60ce9b69e1e5ef2f9e753d76b3b9f14d6b92e316a6f3ad. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:27:17Z), 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/JP92Q2502012.