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 0x99e13bb2781f80449c7d84fc65aee9bc0c8f40d980ba1453937907757495506f. 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/eb3ee7a9-8ea4-4b83-81fb-ada5d12a5f0c.json and https://artists.proofprofile.net/proofs/artist/eb3ee7a9-8ea4-4b83-81fb-ada5d12a5f0c.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 0x6a02b00a9e64d201a0d0505e5936ede189e9d911eaf5020e9ad81a9a4d810be8. 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/QM42K2058215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518550ce70653fa9f83e19d7321d06e44b6f1f1f5648e7c5b4f4508f438e041a. 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/QM42K2097023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fa139b76305e8018eefa8b86f48b366ef538befd68050d47e3d2efb6471509. 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/QM42K2028382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7422615d754d61f608c50af84e6ed192a081b0f12dd9eb2e033488a82310ef69. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZNWS2061742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd65ed0c7574f50cd0a415d2c20ae0c5f7da5ca65d6de8e5e2a1aadae0403f9d. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZNWX2099491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8581c19b1cc71eb06cdd011ae580cba5f78f5957c4a30359f36e2bbd2e9a462b. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:01:56Z), 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/QZPLR2052553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e236a159859923e498bff83b04ecd2789eaca4b03744d6e051dc7ff48a4707. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZPLR2052556.
ppp parasites eve (a collection of songs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85033e3566e95bcfee570035ee85e83aed4378791f4b855a10f6608fd988ad23. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHN32108012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4272e631894f1aa335ee1338811c8880d6fc4103394312ce15e45953b84c375. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZHN32108013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61cd3d8bbc2e6a9fcaba290cc0b94a1a90c5f85a9c49fe0efd3942b5f7b09c4. 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/QZHN32108014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4988f8f03bc991a89748397e642139427aa78c67ae6a7a4589383066b423e0. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:01:58Z), 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/QZHN32108017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237a65840d7ffd25d36ef0247984f258e9f7e92f0672f315b6c420fb0aae9f4f. 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/QZRP42121571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee3ec6bbfc721a164eabb8e8c6c168e696f22dbebc6fb22daab854dc69f7588. 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/QZRP42121572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c153f869bcc09564693819ee1def962a6238ba4ee4a38f0d3447d018433ca2d. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZRP42121578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b433f01c6f26af02dcfb6bdf579032ee427516018f62d86cfc099e6bc4e3619. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZRP42121579.
Hardcore Will Never Die, and Neither WIll You
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e35bee936d805823375d3efa46955536fd15d3e50329bfc0a07eb49539f89b. 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/QZWDE2313305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0abf38679319e788cb0467ff5d8dde468d02c178198c6e1b8bf6f7dacf840375. 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/QZWDE2314091.
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 0x93b69ed73c18eaf68110847dfaf0bec361ab64ee7d05a10cdbd2baeecba63004. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZWV32495129.