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 0xff7476e3edce829090b71a59ebe471fab5e21f81720a75a7cd8081777c9a017a. 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/bb22be6d-b5bf-4bde-a755-54ae214cc88a.json and https://artists.proofprofile.net/proofs/artist/bb22be6d-b5bf-4bde-a755-54ae214cc88a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Catskill Mountain Air/ Wagon Wheel Notch
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 0xd81529647a87564785a3123ec8575f354312534ca198bb2c253aa0ef368d6fd3. 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/USCQR0510126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2b442874feebeb181177c3185aa890e51b7681a206ffb70734475941178127. 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/USCQR0510127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d48a66b9bb59d8995cc55f06dd7eb49d628595fd4ce8e3bb3e2236782571b3. 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/USCQR0510130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8edb826b6a24a65e7861b04f02b6f5430901aa1ba5a0b7c657caa11cf04f68. 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/USCQR0510132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b0ac951331a6ad2a53f2a1aed2617e371b8b40624c09474609e65c4c4ad0a1. 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/USCQR0510135.
Cropies's Strathpey/Spootiskerry/Sleep Soond in da Morning/Lassestrust in Providence
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ea2b4cc79b4826693f2ef6df675bd000d71e249b57a3b7b88285c799ea86b3. 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/USCQR0510138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e2b4e3ee0c561fed468bde40ef71ca54d9f843bceccc827cca34913afbdfb0. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/USCQR0510129.
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 0x59df50b067508cdd2894585ae9c224c14cdf41e1f2b446889eb57312838e5fef. 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/USCQR0510131.
The Earl of Dalhousie's Happy Return to Scotland
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5496a96c9a60ef1a21e178e4754e35987a603f30a6f4436fa5f0ab8fad96c5c. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/USCQR0510133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f39a30081d68d8304a26b8301edb8b92c53803712ec242a865e091626c952fb. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/USCQR0510134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4c6a83fd3bc3b4f1047a77173ced48611452c4b81f5f40edac16b03919e894. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USCQR0510136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28bcedffb720683d0a0e160b660bcac2d1a7f6628df3be5408d67a70689094a. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/USCQR0510137.
Gin Ye Kis My Wife, I'll Tell the Minister
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41aaa1d11a1cbf14410720d471e715bcd48f6338664107d6f7c55293ea8bd11. 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/USCQR0510139.
Ashokan Farewell . Beautiful Dreamer (Songs Of Stephen Foster)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f8a48b07846541ae5b248e8246166cb8f5dba188d0427dcef2ad7c2b497265. 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/USAR29901115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e1ae8e838343f9eb8163237abe774ece8efb332cd04a8b599e443821c0fc48. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T17:01:40Z), 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/USAR29901116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63459247e9b9d01e411be7e6886d5083f4d143eee20c40ef9e911c9389c63a35. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/US4QP0563804.