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 0xdf46db75eec17b449028fa480edb295c53695e8cc7c25595d3c7964f92b05a03. Chain 2 (Bitcoin): anchored in block 953996 (2026-06-16T20:04:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/30005eda-0c36-4c8d-994b-be4b1a09191a.json and https://artists.proofprofile.net/proofs/artist/30005eda-0c36-4c8d-994b-be4b1a09191a.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 0xb220e43330b96601d77b38cec183b3a0e21b1debb11debb78f7a031a91aeedd2. 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/USRDG0710281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e2532d88ac89ec8bc20b86f3a9b7afe9ebb02e405da6817f58701728174f98. 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/FR80T1101157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a6d9bc98adf222b8fcf1190f7782a14477f08c376d4751a0139b77df877b9a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USRDG0710280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c0db82ae1021453a434d3015605d62bb993d34c906aac6f7610425f84967a5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR0W62034554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0939c9d936d2c540ca4bca0ec4119d4e31fe1d7a10bca4d2869f93b3dd884e51. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/FR80T1101158.
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 0xb1b16be1df3c76f11333b0a25d9cc95c207c0df39ca33e5721cbf69e00e01aec. 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/IT7151391827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35cc33deefdf95e0b76ef8c24d062e0c56865b6c5890df718666f18cef6c902. 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/ITR551300204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c60446b61ad44417d1966de09deca3afc086a41a7c4f5b49e06737ef8db33a3. 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/GBBFT1000056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4f3649daa003c0e733e95d0e78688994b67f2c3e01980beab04eda4b515afd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/IT7151590778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559aa58bb67929ed047ba6a9562f18dac0b07cd5426ee5254165aa690ddc26fc. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/FR80T1101154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a6d9bc98adf222b8fcf1190f7782a14477f08c376d4751a0139b77df877b9a. 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/USRDG0710280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e2ca9be1e2e6af6cbe529b45c4160d5983e078db5fc34a25ac2ca15a911c24. 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/FR0W61595265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb220e43330b96601d77b38cec183b3a0e21b1debb11debb78f7a031a91aeedd2. 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/USRDG0710281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69b09e092bc1003891727ef9944fd1a33915566fcad7a9c81988bc190b59ded. 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/FR0W61595363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ee5564af218344a858e4a856cdc84e840aa6a04a8ba2dd1c02684a8da40f03. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/FR0W61595230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec6c9f99c4f927b8d59d1ca90d7fa0ce1e31cfabd8b05acef2c0da324b4ab74. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/FR0W61595368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e0b1edc77f504c0f0ccb469a4596260efa6d86d05239d057f54729efd1f013. 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/UST8K1551769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8715b5b1bc0ddee143e42e93a3379b6a9921d0227716b3281e56252f8c44f5. 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/UST8K1551772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85675492a8f7d7be771afebd35e8e2d2d57bd2b54fbf87bd485c8f719235eb0. 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/UST8K1551775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e7bf8e4f3dc35b44d51a370a381c86f4a66a590dbf68b1d21fe96714a9b368. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UST8K1551778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31a591dea6e4f45f01f4ceff2439f292f9a1bef494ece63561e919697130630. 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/UST8K1551779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9551cbed0068d27e36d8f2d05ef29025a49924e16b7be692c7100d9f768d607f. 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/UST8K1551780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce300e256b87d36e60bdfebf4e65636397e54f596efb30d90b4d1a0ffbd02f7b. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/UST8K1551774.
Assassination Nation (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06609e23f3f46c2d02ac94978a57549295472730d012e42f43191c9635f4a03. 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/USLS51830807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc431798686a2f3656c779eea8dc46ab11e91181613a535ce146ce4c5645af278. 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/USLS51830821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2724720a1686df58eb50b4fba14f378ee9b63f4a6523994c71d630fd96c35c07. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USLS51830822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb404494d184d8ea8ec70b521ba919d2b3fa30ed6ea12cb763464641bbe1d71. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/USLS51830823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe43b74f6c77cf1ce5bb69ca16ee55994912ef7f3ae2b7cf550ee76304e2bde. 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/TCACP1673678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed58f45dc2b4f5a95c32ae6fd9f77ab3fbcc83226a61659cece36298e83b763. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCACP1673679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd034c5de9bf56ed819598403010b6f223eb08b5b57c79d410416767e38e7f664. 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/CA82I1200456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b73a8d4ce739ce90426a7a64d038abd48f74de8646848398a5bafbe7f194c8. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/CA9G41200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb3a810dc94e0513a0c107f8ebf6b956ee56f6b75c4afde44e766c6fa19164c. 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/CA9G41300230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d1b6cd2fc1b9fc43359e893591ade0ffafe5cc2abeb5130bbb69213dcd1ddc. 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/QM2PV1653576.