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 0x05c2bc52442bf88b10422afc2e68067d2b38a73ef9db3d6744425137369eb99b. 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/16021546-8452-4443-bb82-5bcba2d910e3.json and https://artists.proofprofile.net/proofs/artist/16021546-8452-4443-bb82-5bcba2d910e3.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 0xb273943d51750c9a18ab415c754f88b6b947ed7eeabc8924c04e58e1f2e9e75e. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:49:48Z), 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/TCJPL2074065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe802fa209f636662ba43aaa2f0434ec15a54b2e65097764fe71fa404886e5fcf. 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/TCJPL2074088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5393cae8212b3c0379f0ec3e84f0131d9f8be27aa4eca22fdacd077e9f6adf. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:03:05Z), 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/TCJPO2197073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947cec95832e3904a822d423c39b1f11319a50330fc5a683560d69b66ad93e2e. 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/TCJPQ2124094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc4a92452a043ee09e83f5183f2a51941f2d1241883fa3380276ec2cf609fbd. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:28:18Z), 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/TCJPV2338746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb2ab989484edef86da86bb93e5a3f1671a93e1b39ea5a3f5b4bb140b0b0f0f. 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/TCJPV2338751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d1fd1a2cb0460c3f0f5cd5af263a933b921f328f8f6b93372a4c6e8b01941d. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:05:25Z), 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/TCJPV2338754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ecbc9a837bf74f19710c184354fb21123bcb8088047f963031b0f77345b047. 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/TCJPV2338755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7cf1a746e5c7170274c90044bcf2056ca0e83ec258f9f8b0ab2c285dc27bf6. 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/TCJPV2338760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58dd336e45a7848424a1e7c769b510c8bd1357e1af225e2337b81075d234e82. 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/TCJPV2338763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb228143e829baae4b3d843bea27a7fc26190c7e12b5e0e5041ae87d499114c. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/JPS802352637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda29aba9f388e36c8da194e58cd5f883ad49b45e8c2cc023d4003f77bf55f58d. 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/JPS802355239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6611f29c95995da4c0ebc1ceb19d1383e58018c46f3378325549c3fa1435b62d. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/JPS802351594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda3ffa77bc82cf282484094db427eea1937b3879e422e79509cd96771d04e8e. 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/JPS802355240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3649cf5a03d8722127159951875e766b780181b0a98bb18053504fce26b6fb77. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:33:57Z), 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/JPS802351595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfebd043422dd3582fa26f13fb77187880a43ffda1af97f20180fab9f989658dc. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/JPS802355242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa820e392a9a4f7adb9ca050ff50fe32b9ccdb8697f19246b0070338d837335ef. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/JPS802355243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5094c57e814d0d5444ef24fd4ebd2e475f28590612fb9caaf8d397776b0384e6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPS802355244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e31be86102796041d141627a87e366a64e6db78d606279fda953c4ea9727dd0. 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/JPS802352638.
そうしてあなたは去っていくのね