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 0xbd9a9a319a109af6a37f70bec12d1f1c8d82e9ef0e7ea20402cd16da19581dd0. Chain 2 (Bitcoin): anchored in block 953719 (2026-06-15T01:07:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/89c620f9-072d-4b84-82a9-a0db5e25b3a9.json and https://artists.proofprofile.net/proofs/artist/89c620f9-072d-4b84-82a9-a0db5e25b3a9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
朝の都会には乾いた花がよく似合う
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 0xe83645789773359a828ee26fcbc546a61a86c9fbb04dcacf9c237e201d313ef3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPCO07386680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa639a83df0b9f95ccc1e991e592f8d5e0b5ff5b7a59b946e5839e7a66bf826ae. 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/JPCO07386690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ca931a4a9cb7c3cb7adcd41f108a41b729f1d4a0478dad57263e6971eaac14. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/JPCO07386700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6f11cd0911b7f45e3009dd78a30238009d99caf4dc8d214f32301acbe9abff. 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/JPCO07386710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaca139094bd1b06d0304ab7fed8956fee02b92fc44b87ccbd12a81f36da1759. 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/JPCO07386720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986dc1f3e53d60d958a26ae79cc55c977676e5669a048ddbc8d2ae014c2e0bdb. 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/JPCO07386730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3703f122cc26e48cc1ffa52612e670ce2c716b0206ec8b3bd0bd1711ec5d8af3. 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/JPCO07386740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf708dbe8680d80e24cc879ff477faaeee6b23c56e730af3481d4198ef9519913. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JPCO07386750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668a55f7c19628a831652947cc54ffc71bf509043599636af423ab2d95dc5a2d. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/JPCO07386760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7041a91235f887f78891f02f19f40d2c34c6880eb3318170d5dac9874fad7eb5. 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/JPCO07386780.
スマック・ウォーター・ジャック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef37dacc1d4e7dbd7c2ffe1c0c79e6c1a5150984c594e6d5550a2e3e54e3832b. 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/JPCO07284450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0967672da39e706364d06e73da68b67502b7e800f7c952c9b380de8bb7121375. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPCO07284440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d4aa2b128bf95cec572db06bc4ea1005906026e1980cfd9dd36f5066228557. 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/JPCO07284400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0967672da39e706364d06e73da68b67502b7e800f7c952c9b380de8bb7121375. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPCO07284440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe835fdba83420573b33a6a25ee1f647b6e1923679ff46854783b56214b00e691. 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/JPCO07197970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734a665b762fa6383c3eb3c37c4e0c91acfe43df99af711e4e70e411ce2bf6bb. 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/JPCO07197980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9565a4d16ef7fc157907f5b73852e220884bca2ed4dbb74b231dd6332dbc9f7e. 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/JPCO07198010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06e999237eac7e9b63a9989afdc5822df29dd9b8adf20955f42869ed2287aca. 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/JPCO07198040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24299afa070ad01cfe02ddc70855beeb54bc7d4d84262c8309ece120d6211e90. 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/JPCO07198090.