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 0xf98618decb913fdb6834c4d588fb09217045cdead19de84f762d37ccd19f5932. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6bcc159a-3ff5-4385-b3b8-9fef1d7dda4f.json and https://artists.proofprofile.net/proofs/artist/6bcc159a-3ff5-4385-b3b8-9fef1d7dda4f.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 0xc6d830ebb3337861b107429fc02f200f55e3653835a3a6981cb8a54df03e670b. 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/CA1MF1121442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce2b7e06ec075ea5bf77e0e08e33f974e8ab1b7df8f38980d0b288afaf48f3b. 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/CA1MF1121444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42385f1d0dd11a1c1e1bcc3c83c04104cedd8d65d0baf3390c47fba807691d69. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/CA1MF1121448.
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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7d2393acba919105acdff62b94ce016e9d236f0956575237aa485465b0702f. 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/GBBBA0641710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46a32c79be206cfd54b8caf298d8f99e9e11c12e2a15a6022b6faabc62a0bed. 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/GBBBA0641840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd018ff4b3493166e0c34f216328a53265580377c875986d5159b7ffc8591349d. 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/GBBBA0641780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93bc759ea1458bd9042678b977e424740446e8a5aff6032e896714a1703dd2e2. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/GBBBA0641770.