Bread and butter may refer to: Cuisine Bread, paired with butter, a staple of western diet. Bread and butter pickles Bread and butter pudding, a British dish Butterbrot, a German dish Smörgås, a
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 0x3da13819fe1f14b99b7551cb6531924c6bf81b38be995b62747f08963b4e1a81. 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/9ef1f8a4-f933-4eeb-86aa-680e0feb2d3f.json and https://artists.proofprofile.net/proofs/artist/9ef1f8a4-f933-4eeb-86aa-680e0feb2d3f.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 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 0x1374be3bcde2108617ab397c8e3fd24941465d569a30eb7e95e6cb467e0721b2. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/JPAL07900530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43828a79bc2c91f91d60080605b1a443b240b7e776d3083d697ce63a86cb711. Chain 2 (Bitcoin): anchored in block 957674 (2026-07-12T07:50:41Z), 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/JPAL07900590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9482dba86a70524fc98df766ecd643716e61e2b55ea035c1cd8cdb5e33816a42. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/JPAL08000810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9482dba86a70524fc98df766ecd643716e61e2b55ea035c1cd8cdb5e33816a42. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/JPAL08000810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9463446af0a06a42bb3d0582d2305e4e47f34e6ab5eafb405ceb766e2179a672. 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/JPAL08000830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581a0ebcea666e1da5a11ee3e87dd076638b8dda558452a06118d092000a7601. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/JPAL08000840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0608937f60c58a7c58106280b6b6ea574079d249d9172a43e943167520817d8. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/JPAL08000870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946e6a6add4525c6da3304f183e9bef200b4f02b80ca9f95d67485d24ea11460. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPAL08100560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946e6a6add4525c6da3304f183e9bef200b4f02b80ca9f95d67485d24ea11460. 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/JPAL08100560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8829176753a913fdca797b67d24e2195cde49e8b3c30a7cd423ea69fd5fd14a. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/JPAL07900520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd528a5558e8994ea7d0df4b45a3de3cc91639eeaaa8623ae6dfa350e9f45aa13. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/JPAL07900540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8920d0deb3870e505d5a35ea2b4447bfe64a08368b8d8833982ade397c218926. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/JPAL07900550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43828a79bc2c91f91d60080605b1a443b240b7e776d3083d697ce63a86cb711. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/JPAL07900590.
SHONAN BOYS～For the young and the young-at-heart
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ca5b35f0347c19aa33ff0c11c357c2b70702122434359fc3ed1ce2530e6bac. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPVI00533250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ebbb63605667d9898c8ceaeb2414aac2c992670f3d17d68f11448b4fc503c6. 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/JPP400700695.
特別な気持ちで (I JUST CALLED TO SAY I LOVE YOU)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160941e45c68bb1a5ddd4f20933c146fcff7fec2e173cf9bb9ec125be31d7166. 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/JPFH08420001.