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 0x7315c2b7fe84307b23ff1306e60d0587261c064bdb3ac910f0a981292d76b1ac. 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/09c4325f-e8fb-44dd-bb4b-bf2bb8a6728f.json and https://artists.proofprofile.net/proofs/artist/09c4325f-e8fb-44dd-bb4b-bf2bb8a6728f.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 0xf7411f618d4b047a94bd80b3719dacaebc65fe579f4ff5232205bd51a18a4d9e. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:43:43Z), 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/TCJPQ2282204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb927f1bc8bcadef663d82f721cb01e551a1e8f4ce4928e7bc90c0e31746f6b23. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCJPQ2282205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512cb4b718387da2da84625270c59cc29898f1db3d93956549de0c02df57160b. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCJPQ2282207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4d50ae37d577144b9c8cb120faad173e61a10d36d484077771ad99be99be22. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/TCJPT2227622.
転がるROCKにコケは生えねぇ (Korogaru rock ni kokewa haene)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc446f19e36fd92ab596125c996b5cfa84043de0dc4326c9efe20493bf124b7e5. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:56:54Z), 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/TCJPT2227629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cae49164074fc3745e89a0ac45453de0ba4511c0fa6b3454e1e4f3c0fad2bf9. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCJPT2227631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7370a71e093f47c707e851c88241c7c9c8b7cafd66bed358b12afe332e70fb1. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCJPT2227613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21bd762638bcaaa42f66d40f2a2d0a2b1613b938d617ee69b9f41b95d23019a2. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/TCJPT2227616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44eea151612163bdbd8e1b97d271944fbf855b175b1ea92afc43d793fbf10a39. 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/TCJPT2227617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4d50ae37d577144b9c8cb120faad173e61a10d36d484077771ad99be99be22. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCJPT2227622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60750171d9e2691b0e46fc993123b11b9cf4443d96525d50bd7e072f45ab2ea2. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/TCJPW2338878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf125f611aaa092acbdff43d4fc18a8407d549ec82c53eb66a9bbb38c12f938ae. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/JP92S2370269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d97d28b48184bec2ccb629e6cfb3ef0c8856db56a555763b8b720d6a6f41c0f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JP92S2370271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706f9e410a43bbfb108228b0822a00d7d27a096d245de151e0ebb09310ee5fd9. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/JP92S2370272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128c4818aa4ff38dc912861beddac92324cac8edd7938c71fa4652a44e66288f. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:51:33Z), 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/JP92S2370274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150eae120c102ac5725b8e2184615f1d6c3401627d64911ce7b8d6c101668996. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JP92S2370276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2120df4984f03de78d61ec25de3d64bd6be1245cb29336f02fcae1ed186762d9. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:19:19Z), 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/JP92S2370267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237ec76af84a23ef2f417dc4c86b6f6201ed91607807a365cff9cb1efc89f3d6. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:02:30Z), 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/JP92S2370268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef914ad81088ee0fa959d96ab36a43ab0b24c205a99c13796ec24e17e9d6af16. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JP92S2370273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150eae120c102ac5725b8e2184615f1d6c3401627d64911ce7b8d6c101668996. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JP92S2370276.
誰も救えない歌だとしても (Daremo sukuenai uta datoshitemo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539ea18ce597681ead5a3da0a5df8f84a80569a524263067d4a4432b6e46e26d. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/JP92S2370277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c32b9be0fd0b3b3c51d34c37e5a26604d73963237149882f91d9fe0f249211. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/JP92S2370278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c5dcbbaf54f24c111e622ed9a1d7faf3560f20c5af57767188d0cbf2afbdad. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/JP92S2370275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc647076c6625faa6116b0964169c1e62a7a187a8cbba9f578cb9f1b9a0501dc1. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/JP92S2370480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc124cbf35aa2e7673dfd7de2a131e94b9c1673c6036dd659eb5e354cf3cdfc2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JP92S2370481.
「バケモノの私には」 (Bakemono no watashiniwa) (Piano ver.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffbecf95ce83c93e21df1a79866e4122ad1dcea41b3b644d20adf2f82da722b1. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:04:27Z), 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/JP92S2370483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038b48717646b3f3763ab034bf693b2d2ca2609cc7d487ca06bd49633203ecd5. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/JP92S2370487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18d0ddd1a5ecfc7249e5bca60f1f85284a3642ee776921aee22845ca49592a5. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/JP92S2370488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e83fa703044e5bc6742593f38995fed1261f153dc0ceef8c420d27e79da76ea. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JP92S2537689.