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 0x764b335be5296cb3672703dd64ab1f9ccc82b95fd9f237c5ec5cfbb8d1a2e91e. 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/2cefbe98-9421-4103-aef3-9a12373a168f.json and https://artists.proofprofile.net/proofs/artist/2cefbe98-9421-4103-aef3-9a12373a168f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ラフィン・ナーズ・アンド・ア・ウォール・フラワー
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 0x5c87d3d07483176aac000e43070d00b11b41a71e14b622b14b179baa7f099354. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/TCJPE1675465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee9ea44295828bcbac28057a0e20f1e91490e9770b59ff8984430e103a6ff20. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T09:07:51Z), 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/TCJPE1672028.
Of Reality Another Version (feat. Keisaku Nakamura)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a204f948ab1cf93dc336d2f8028a59a904d7b02dc05a10a84cfc2dc6179f11. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:38:33Z), 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/TCJPH1886006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a204f948ab1cf93dc336d2f8028a59a904d7b02dc05a10a84cfc2dc6179f11. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/TCJPH1886006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715c7af196fcf671b4eea3c5eb045418f962ba23e7d6678cfb6ac18b08f3b6a2. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JPB601901292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001fc01746bfbcea29cddbb4ddd8d988cd6fdde5a0520ddccc3007fe803fc6ca. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/JPB601901293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b6e9b955d533633ddd38118ac7125c4503992eb87a8ab1c6c1d57c51c80f75. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/JPB601901294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbceab45e417e532593460df0fff7ef0b968898fcb0045c6a05c4d4605914d474. 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/JPB602003745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a7e6a63d4827dbfb2fefa750f90a261384f25fbf9f646b7fef3dec6affefc4. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/JPB602100183.
the place where nothing's ever born (YODATARO Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed2632858f5e5614b3a816f0ee548e68af4e29e4173b62299c427d8c6ac5e96. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/JPG102400322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8599527d893539a6d5a7c7ff76a487443e828de216d9644de697a1ed1e839066. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/JPG102402471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ed84716bacb1f1ccf68d3fbfa814c0b02d2738663ef99b2c168f93adfce816. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/JPG102500035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0819c1cc6baed7ad86712bddadacd138e9d3bcb38ec8f7196a7a34d2616b13b9. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/JPG102500033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9fdc11a7625e393b6c1cd0e9fd348b58b1e1889610e4856960d04c0a62045ff. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/JPG102500034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a97985697c4a3b81e5057cda241b9f5a894a89cc67b1bf1339c8c56781f48e. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/JPG102402155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ed84716bacb1f1ccf68d3fbfa814c0b02d2738663ef99b2c168f93adfce816. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/JPG102500035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113e4edd0c6806661b211222bc179a1439f5a9f8013ee3ae2cd0f5b99bbd46cd. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:40:33Z), 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/JPG102500036.