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 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 0xdc0a9320b16fe8a1729e0048db2ee45697b8ba15b1a7b49d0a280131ef3cbf13. 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/42bf1495-73e0-438c-92a6-fc01e4a23b44.json and https://artists.proofprofile.net/proofs/artist/42bf1495-73e0-438c-92a6-fc01e4a23b44.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 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 0xaa6865e3e47afcaf10cd5139b3e5292c8d24537220199223335f2dfa04906acf. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/QZEQU1904171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7d47f8b5513ee2a36a7c364714c316b603a7d430908f8490b9ae72d5b07ce0. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZEQU1904172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeaddd261caffb5865a9c0777abe4d5539405a868d0fd0e944dbfbca3e119ba8. 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/QZEQU2055099.
I Hope That Somethin' Better Comes Along
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1143dbb02b0f461e061b2500836d89b6da55156a44924be51ea3b0fad52cbb. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QZEQU2127241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46955cadd8acd0214c9ebdc5354f6047e1d731aa507abaae93629fc465ae0758. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZEQU2268322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec61535155f96176fa1e60f713b1c628969f52f1b27e667e849d1fd79f1291f. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZEQU2268501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57938940c4488a26256d96b669e619fca3ce84e704bb75dd489cba4cc4c35c60. 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/QZEQU2300871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d6e8aa809c71212c6c2b713109130e7ec5150fde016a1a6f52e41f0ba450ab. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZEQU2300173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931bd28fcbe98f8ffe63fdf22af5018e328e3b058df88bb781668e4b020007ad. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZEQU2300175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9371a6928c464cc351d2e90b6f170d9016c3db1246b87ae353590b3232877083. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/QZEQU2302085.
Happy on My Own (Live at Rudy's Jazz Room)
Give It All Up (Live at Rudy's Jazz Room)
It's Not Easy Being Green (Live at Rudy's Jazz Room)
Do You Think That Santa Celebrates Halloween?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff4345eaba8fcd068f3753560fe9fa4758cf4fbde6fff784f6997252826c635. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T19:58:35Z), 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/QZEQU2401168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e32c976b437731f097853382c995ec403770037d1f4444ee6e52493fa38ca22. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZEQU2402512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ca489b2df873b149106040703cf71fe3b180ea3f99265164f7d88ed5e0efa0. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZEQU2500018.