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 0xceb35b27c3bc4b3c67f3ffd5690c165c34f49b15d6649a83c49aa62bcca6aecf. 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/75caef21-385c-490f-aae8-63a9e8b33430.json and https://artists.proofprofile.net/proofs/artist/75caef21-385c-490f-aae8-63a9e8b33430.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 0x29391de41e42cc20963efc01233b285387ad67ec7ac30b04763831d3f29e90f1. 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/JPZ922207994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672bf6f6494f522dc94553388bc0c346208abccae8bb344ba3eb26c594f7c51f. 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/JPZ922207995.
Somebody's Watching You～誰かが君を見つめてる～ - Long version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7186ce6e59dbb931fcf324bbe90c5517f076c496935b3e0b07bdf2a5957c3470. 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/JPZ922207996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee121a7d8b828d525a651df7651c800f56eb7bd9ac2e5795fa8b35c0ea2abed. 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/JPZ922208003.
Tada Ichidodake no Eien (2018 Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23321fb0a9e39c4a31ce91a5946f50c4f549208cfeb6d4b00388c5bad7503551. 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/JPPC09021111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab328d2cf6a12d8148524baa2bc8998006780bdcaef545cd0cd3d44bfdc4ba8. 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/JPPC09021115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c199c6e3bc2e2f476fcacc65f041a83185b7005ef284993b2b278a312534345. 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/JPPC09021116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b0418f5695e3d579e8d1d5b11194ad2b0034cba876895231b5e722de878ed0. 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/JPPC08807196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be5bb7f5560ad1b59b996c5044d14c2f920f6547928560fcb40d3fa32c48788. 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/JPPC08807197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc882ef95817d47d046bf1667274f9488197c0042ea327365ffb1f1dde32bc096. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPPC08903590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90fe5225d9fdbc2579a9f442fe195ae6cdab076ac42905d6371d95aadf05465a. 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/JPPC08903600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61863b000e558d58b05998383828f9eec5a8ae6808dba1c867d262da9b6dcef8. 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/JPPC08903610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b35eeb5751b0c9ed37db629396de8cb5793bdb8c0a748103059c6fc2fb8b34. 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/JPPC08903620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97227ef3e010cdd3906ac8e4de190c8d3f3fd346950a978ffb44188f17063bd3. 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/JPPC08702360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed4e617df50f90afa86492d46334c52f3e623919fe56995a1e67f3974bb2404. 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/JPPC08701360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd262074767527373635f606d6364a092a8ab0f0d6932bd8c71edfa924f9639. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/JPPC08702390.
Aisaretemo Inai - Harem no Tenshitachi -
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13f14498fdfaa4e0901697a8a0afaab0f86aa1b445854ea092a61b7f068f9d4. 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/JPPC08704200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4220fd65e9c5326cf68a94efef94f0362cc1c6fb3eec12850c47a274196b1f2d. 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/JPPC08702370.
Mouichido Yoru wo Tomete - Single Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015bcd1c92896710d311c0eb95ce14123fdfdc36b41a5df16d11a12966b81387. 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/JPPC08702380.
Platinum Best Sakiya Kenjiro - Mellow Groove Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9a07c0e7faa0325c14f89880d264af210fe756914c4a9ac512fb29d749d295. 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/JPPC09125258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed4e617df50f90afa86492d46334c52f3e623919fe56995a1e67f3974bb2404. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPPC08701360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836130cef6fe0c7711b5599ef033522d935c848ed7dc0ef61e4ebe7603728b3e. 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/JPPC08903670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015bcd1c92896710d311c0eb95ce14123fdfdc36b41a5df16d11a12966b81387. 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/JPPC08702380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23321fb0a9e39c4a31ce91a5946f50c4f549208cfeb6d4b00388c5bad7503551. 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/JPPC09021111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c199c6e3bc2e2f476fcacc65f041a83185b7005ef284993b2b278a312534345. 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/JPPC09021116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97227ef3e010cdd3906ac8e4de190c8d3f3fd346950a978ffb44188f17063bd3. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/JPPC08702360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055cf81c18636e6c7c2c55a141b20aee1f31fd6da728def91c05e775a3f5aa01. 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/JPZ921307967.
Sleigh Bells Medley（Christmas Day～Jingle Bells）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407190cb7bcb8f0172dd9b9e46e17b63aa6ec513d66a7fe7e50478cf7c9fbe16. 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/JPZ921014050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7beec0e5eb033fa87be18caa9b765426f727f39bac49feda7a99e3b98b8a948e. 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/JPPC08807183.