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 0xde6143463015d29cb05313f06342c5d18af58809f4de79232de98ed8fa7a89c6. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b8ed49ed-f5be-4b77-9661-085c7fee0a9b.json and https://artists.proofprofile.net/proofs/artist/b8ed49ed-f5be-4b77-9661-085c7fee0a9b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Horton Hears a Who - Complete Tracks with Guide Vocals
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 0xab586b7ea6ab5ab0bb0d3ed0b9bd1c94419c76eadd3d2f9ec04b938c21edf694. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QMFMF1578038.
Biggest Blame Fool - Complete Tracks with Guide Vocals
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b1fcb1fe33bcd43427c4ab826a74608c148c6cb5dc230ba991dc1b08742e31. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QMFMF1578039.
A Day for the Cat in the Hat - Complete Tracks with Guide Vocals
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e12a4602416fcf2f75c5e30ac2ee8b724a70748e6f3571e6f6cb77a214020d. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QMFMF1578040.
It's Possible - Complete Tracks with Guide Vocals
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08fa05f6151067e1396728b72155500fe55d45f695020e95608774eb978fc087. 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/QMFMF1578041.
Alone in the Universe - Complete Tracks with Guide Vocals
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c3e2a3fa84077996030b811eb4b99fa77d50a83f113ada038a330d4d8fac10. 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/QMFMF1578044.
The One Feather Tail of Miss Gertrude Mcfuzz - Complete Tracks with Guide Vocals
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de00e74fa8c0b548936158368bb0433e89a82fb4dfa971af8f05074d17eb0f5. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QMFMF1578045.
Amayzing Mayzie - Complete Tracks with Guide Vocals
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfeff8940db76c5be229099e9de0ba5323094f3a9deb66a2de58f4db26f35098. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/QMFMF1578046.
Monkey Around - Complete Tracks with Guide Vocals
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520c362d1e5f9e36cd3bd8b7c92393a992992ea17e5cf98ad4b16ab580aa32e5. 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/QMFMF1578047.
How Lucky You Are - Complete Tracks with Guide Vocals
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42edf786a9e1d578f76f334e14c3af0e8eea581eb6c0ae8f5237f036a13853b. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QMFMF1578048.
Notice Me, Horton - Complete Tracks with Guide Vocals
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa897e285d0c5817896aa5faf7dc9c6780130b650ad40de244e859d101076f83f. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QMFMF1578049.
Egg, Nest and Tree - Complete Tracks with Guide Vocals
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296210888fed0bac006fb7a4a2408cdb61fe0762887bf72363a0fa19a4fade74. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/QMFMF1578050.
Solla Sollew - Complete Tracks with Guide Vocals
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965138879c7c5ee6a1fba88f8f31bf956998cd231923f8a20606ce34fdf68e32. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QMFMF1578051.
Green Eggs and Ham - Complete Tracks with Guide Vocals
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f61649eaa2f8095ce24a980e73271fe650bd814262e4b46c188d2434995d715. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QMFMF1578054.
Munchkin Musical Sequence - Complete Tracks with Guide Vocals
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26783cadea6dec49eece7860a43070adeeca376a236903841cd651ab92fd0acb. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QMFMF1549244.
Follow the Yellow Brick Road - Complete Tracks with Guide Vocals
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa366ba010bc53412af62169bbbe27383d6c31fed62e9b8b9a016395822fd69b2. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/QMFMF1549245.
If I Only Had a Brain - Complete Tracks with Guide Vocals
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d492b0291c3848a5fc287fc926a057772f345bd17ff0db298a8dced4550590. 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/QMFMF1549246.
If I Only Had a Heart - Complete Tracks with Guide Vocals
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25265d968e5f2f232d973eda5438de7df11bf55e71d57d89f2bca2a77027b580. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QMFMF1549247.
Entr'acte / The Merry Old Land of Oz - Complete Tracks with Guide Vocals
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a75e060542f833ab3bbe349cfa73795d5ff0a956e318c6014acbd20e7db48ec. 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/QMFMF1549250.