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 0xbcde9eac691703980577d9cdf033682aad5aa2a0341c4ace285710d36975dc5d. 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/cd8b577d-43af-428b-9e21-f8e68583c108.json and https://artists.proofprofile.net/proofs/artist/cd8b577d-43af-428b-9e21-f8e68583c108.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 0xfaf37bddf82a7ab552abba2496a5a019b247d5b12c5efccd9cb9830d7fd9b0df. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/JPB600234402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcadd7c3b6b5cc3ce5b09cb041d951fb95d478596909b1a6228aa8859a388aad3. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:43:51Z), 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/JPB600264201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70694c5ac5370577483579de139a41d1bf86012704f0fb731ef0a1af9535ad13. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPB600272102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc808bbb34bfe03e152bd49474a59a3d4fc394efc018b194e95c77b7f7f609e16. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPB600252005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1135634b60a452169bcdbadee269436e4ade1832f835a25c3ec6b19f67b6565. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/JPB600340302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f9fdbdf200b3c3dee875a6073bf5b42c55123c4a2f3eb1cee79a4788bf5c68. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/JPB600347801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704a67fda13f467234aa35d4ca462fd68c394a29343fd786779df2666a579a62. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPB600380102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda511de172e397359db8e9c7c0e43e066e5a332ef5eff8d595e4be5e4fb103b7. 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/JPB600412203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54634d55ee39f6bfc6c46667b0963f5af458794ceebe7a5aa83287df55aa9989. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/JPB600378501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4e9d153a108c8e897777f7aeec7fab09b228e75930a399ae072fea64c3991d. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/JPB600446703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9fcd8794b2be6344f1e0298d1c96129d52ec530870e5c5b02b6f9e2c654a4ab. 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/JPB600494601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9fcd8794b2be6344f1e0298d1c96129d52ec530870e5c5b02b6f9e2c654a4ab. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPB600494601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f9fdbdf200b3c3dee875a6073bf5b42c55123c4a2f3eb1cee79a4788bf5c68. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/JPB600347801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b66e89f82d51de850ea854ccad807fecc2c869b312050a614c438d99b010e90. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/JPB600252002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27adaa0d11491f4bc86b7943d6169f42940b43bc672c78a73c49d7b6e7c46666. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:54:16Z), 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/JPB600234406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1135634b60a452169bcdbadee269436e4ade1832f835a25c3ec6b19f67b6565. 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/JPB600340302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351316e1b019eae2e3fe1042f32f579e37e917890b83d7f3c1759ae612da9c64. 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/JPB600347802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fdb623c111ee5d63b61ed429f484e5929eb5e29028efe0fd0ad51cb85cb1d4. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T10:22:09Z), 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/JPB600546301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1135634b60a452169bcdbadee269436e4ade1832f835a25c3ec6b19f67b6565. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/JPB600340302.
day after tomorrow が止まらない。 Digital NONSTOP
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1135634b60a452169bcdbadee269436e4ade1832f835a25c3ec6b19f67b6565. 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/JPB600340302.