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 0x1b59f42b6b7fe6ff2c1b7ac65afe59dabd60ba793639fc7913447727aba340d0. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f22e0590-d588-4e28-932f-f1d54d7cfb99.json and https://artists.proofprofile.net/proofs/artist/f22e0590-d588-4e28-932f-f1d54d7cfb99.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 0x2c7d776a6aa63b027e956db78dbbeade18504637ca76dbb1e92af8391086bda4. 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/QMRB31800017.
When You're Home (From "In the Heights")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17925e1c63e4373dc7670581a6f0babcffff8dd2535b7fea2a0011d91aba5c9f. 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/QMRB31800018.
Yorktown (The World Turned Upside Down) [From "Hamilton"]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca66377d57edc28bf92d5d3afbdc75b16cc6b75778f680777468b4e873f8b03. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QMRB31800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47f1c812c172e17fd53a63f203a4e41dad53a424eeef871a2c89dca7066df66. 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/QMRB31800026.
I Don't Wanna Show Off (From "The Drowsy Chaperone")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedbb26c711e444f4ebb9d4ebb2d13b0fb9edf289fab3a4d2411250b8a5089ae9. 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/USRUF0800022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea0af260c58f0f8952d128e1adfa09a79e2863ea806ed11aa2a7aab94b3abfd. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/USRUF0800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ec0a082fa0bf821478c81d1076152c9dfedd817bf168fc6aa8c5a0e41aa006. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/USRUF0800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913b66a8b70afa9fa4897bad571b123423d87ba959ac2b52c4a6ea53d90b4faf. 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/USRUF0800018.
Gimme, Gimme That Thing Called Love (From "Thoroughly Modern Millie") [Arr. L. Durland]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6fc74e41dda5169e2e20b5694f1fe248cf49240411c373f15709903556cfefe. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USRUF0500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50c22181d8a04aafc04c214b70a653dc53d7764cbc7ba6e75e9af70e027ef95. 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/USRUF0300064.
Do You Hear the People Sing (From "Les Miserables")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7785b09d50400c63633cf197bac8c98f5108e3837921e40d3a6d75ce5c545ca6. 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/USRUF0300052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9881574da0e73c467e56a3a4629510dbc9dcaf79590bb84fdbc992fd055f6813. 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/USRUF0000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe180856e7ecf7e1767c2b44476fec31bed89ecaa6aa78fde1e61a15dc9785ac2. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/USRUF9900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378ddd860b1d50f21432519f929ab2686bcb767f6930204582c07f2a1ebc18f2. 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/USRUF9500028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0ebbda8722f2ab70f2c6554cefc1efde6cca59d16040f58c567c98c7f74a06. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QMRB32400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74baaef5474aeea80ab70ec1b1b48a08b7355d88df9d219f70a7a719685e8311. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMRB32300058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0884c962b8b5f1f9fa82732f78beb7107d66dff0dcc81886e097634cf177d7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMRB32200051.
Disney Medley: Part of Your World (From "The Little Mermaid") / Go the Distance (From "Hercules") / Out There (From "The Hunchback of Notre Dame")
A Million Dreams (From "The Greatest Showman")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49926a41d1dc7ed53d0a50fa6f5ebb6a73deea10abdeebb6799a28c3b2d90783. 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/QMRB31900052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fb2466c65cb4db704b84b1122deea148d138b9d34c789d0a2a05ffb3c39241. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QMRB31700005.