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 0xbeef36b766c15ebdf5032d71c3800d9c64f108c9b4295cd6f583fe190de5c5ac. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/62ab1934-6e5e-48b5-b37d-6623a74f1c75.json and https://artists.proofprofile.net/proofs/artist/62ab1934-6e5e-48b5-b37d-6623a74f1c75.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 0x0d4453910443b0cf2cdf1479c3302d0bba52a55fe8c291613a9d828cd5a57847. 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/USCMG0403076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0879d6140ea51f2d8c8a025f0535a24fbaebf54ed6b24aa5080f97f865715cb9. 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/USCMG0403071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50fa7554e9e6b0ed487506835b974d9a0ff4efb153e6dbd2cd118ecec965adf5. 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/USCMG0403074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a17cb9c066607d0049073401b3d09de6728547dd9b59518f30e04458db16f76. 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/USCMG0302978.
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
Il Postino from "The Postman"/Visi d'Arte, from "Tosca"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed86f4a8afa70c60fb5f8fa749c24bbfe477166fd82db87af35c2cf148a8c42. 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/USAR29601044.
El Canto de Ensarria/The Summer Knows, Theme From "Summer Of '42"/Concierto de Aranjuez, 2nd Movement
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf975cf45b1f1e11f04d6a24b1fd08a2774d431969fe7436b2121c084341a45. 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/USAR29601045.
A Time For Us, Love Theme From "Romeo & Juliet"/Adagio In G Minor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1fe9e0dd37b37d3b9d61711098bd16f1456e04c60551b258865472d2db9d510. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USAR29601046.
Theme From "Schindler's List"/Prelude In C-Sharp Minor/Hatikva
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2b5fde8e628e9ce279126aaec010aa93aea809349e19c78fc1dac7bffe150d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USAR29601047.
Somewhere Out There, from "An American Tail"/Rhapsody On A Theme Of Paganini Variations No. 18
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113186d1f39f29df37581c4485fcc44adc0e0d5816c40dcda96438e4848e76f6. 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/USAR29601048.
When I Fall In Love, from "Sleepless In Seattle"/Liebestraume
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf84f05e5bb5aa66ec1d4b580b4620e1873cfd508ee334275dc5cda6b5e30bf. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USAR29601049.
Moon River, from "Breakfast At Tiffany's"/Piano Concerto No. 2, 1st Movement
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29814c7d7c29624b0e98d551dcdc4750ed41197b559a147f6d15b72710ae8c4. 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/USAR29601050.
Beauty And The Beast, from "Beauty And The Beast"/Prayer From "Hansel And Gretel"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa5ee6c008caa1c6a610cc055c18d56addab9d392e2be48fd71f5617e23eb80. 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/USAR29601051.