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 0x25debaf85aa250287c48bef85b3514da4844657e751f160482d6ec950d7675e8. 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/e8e56e07-a0f6-4d39-9d48-f755c086c430.json and https://artists.proofprofile.net/proofs/artist/e8e56e07-a0f6-4d39-9d48-f755c086c430.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 0x30314a0eba5a876e7295fca138198a2a87ba0bd4eebec2daf880c8fd4005e5d7. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZDA42261606.
Good Problems to Have (feat. Eyeswideshut)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed46c7a1534b85784022a3ee0d5289a363991607a9b0bc86d61754a2382c81f. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZDA72370805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa78db79b26243e6d83269d2ca82036494cbf981d83b4c57dd30042c727c94e93. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZDA72370808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45482b8c4844d2ee2921ac0477d25a6b2d356777f75101941f46cc87e96cdea0. 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/QZHNB2454816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b11050f8a6a6b6718cf6c9d70252b081ab491bded4516dd2d5fe72b248f779. 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/QZHNB2454819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a621f7631f4d75b02d54baed01dfdeaf008db86c5cb6fee677efb30809a4a0. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:41:05Z), 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/QZHNB2454820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481702f10de446d3ecd30d052121008c966d21f0947dcea1da792aa6e7985bda. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZHNB2454822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16baedeec3c514e343bba3ca137c910b8899a014a2dc8d882fa79efd4ce5ed12. 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/QZHNB2454825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d399cf23dabf5c88dac45d3effe6bd28291dddb425b9636a199cc48ecb7881d. 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/QZHNB2454826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224f43ccbc6f9558f1a6b21562ef01b96bba974d8c759b0b28c8b41633195313. 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/QZHNB2454827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07089b134cd3ec683f494498fefb45e8ad904ded25fadd0e1007a45dec95161. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZHNB2454828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f757c437c04d103d0cdd61ace73603b6b0c6c0cd7ff53336e6b5dbaadd093e1. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:12:28Z), 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/USUYG1579019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4b9b3ca9d7b29a8af55c273401d8e80680726249b13ea31da62bbbc98598d1. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/USUYG1579020.
Spins Around a Star (feat. Eyeswideshut)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931a76a221df1a132317063fbf740d26e2a091353d64025990849a9c337f0a63. 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/USUYG1579021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0342ec780875b3d7d7eb514e8a7d3eb003185a180609cadefd9641e470cf9c. 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/USUYG1747850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e416a0db8ce3a417d29f7c2f68c359ec58cfc95d666ef73631fb4418416e196. 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/QZNWX2296250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e3de6a877bf9ca3e7d390b022958245f56924729a15da023a681cfb02b7bec. 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/QZHNA2196581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1ad3dbf16066ae0e64a0943e36430c902fe336052eccaac0ffd7a15097dca1. 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/QZK6J2295685.
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