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 0x5e23626cbdd1bb5e9db019179a1fc3a442afc9659422fd8d3f5089a4e6cb49bb. Chain 2 (Bitcoin): anchored in block 953808 (2026-06-15T16:45:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f1828b07-aa09-4bc8-9283-02db0e917443.json and https://artists.proofprofile.net/proofs/artist/f1828b07-aa09-4bc8-9283-02db0e917443.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Appalachian Banjo Breakdown: 30 Bluegrass Banjo Classics
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 0x2cdd07be5a016e0700f5f77001d98313cadf4eb0d8372349b219f3ba46b846ca. 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/US86A2100450.
Vacation-Grass: Coast to Coast Bluegrass
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665ef3760bea145ca2856d667d701af9f8d2044100d7ce1d44c6215f02b6fcac. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USA560514826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2865b24b0039067731e7bcba285866095604c540c9bffd69413f4e85d5a7a38f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USA560514827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea075ee7b395a9e4a51fde53423c02c62f078cfe8936140cd5f957e495261921. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USA560514828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d079d2a29c6655d4aa28c142e8fe38f7676ccc6ad69e329f80378ff30be20a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USA560514829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32eb35d76d4e05b590f366ca6c9196a334161d1fb90c2ebeaff8cbd39004886. 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/USA560514830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b9de0ea0b2bad5cebe8f1daa106767365094335e9a93f88e308070b0c67a81. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:02:45Z), 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/USA560514831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc7169867583e0726f8dab56c296aafce94fee5ed5d17057eadf0eb29d7a761. 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/USA560514832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465c982fe23165b5558fc1a453dd34f1970f8577bb2168e90128f3404645a821. 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/USA560514824.
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 0xd300b875b920ebf9a6f513f48c955c188e45c9b340a42cf0b27e2f43e994fcd1. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USA560514825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a118890b42e4576c861da4af9aa40b86362fb49562f36d731dad1b4f321147. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/USA560514833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9592476a39ef496152d1cd3e0954032d3f577952ac1e60f147883b773118332. Chain 2 (Bitcoin): anchored in block 960177 (2026-07-30T00:21:01Z), 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/USA560514834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309e939b9fa77135a025fef4222649a8401618f3b8c3e3130fd6ed5c2092b310. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/USA560514835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a28f9b1a27daa402927a01f8b055c7db86160e0e5a4c6800fa9ea0d3c9361f3. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/USFWP0500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181078cac7e41bc68da7b51eafe5ca18175ddabb10bf108dcab958168288166d. 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/USFWP0500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e61a6547c12673a6486807dae93b6671808d355cc6683117000694689630cfb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-22T01:19:25Z), 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/USFWP0500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c96a4bcf3656273f459f6b12a38b4875faa2865372cbddb829c7b30e9e6233. 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/USFWP0500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea784afff29aef7ea35b2b8219c7916ac7cf761116addfe88f833d2400c12f0. 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/USFWP0500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57aa590ae9c7ca05217e6f788374d3db3a628601f0f995b4b66704c7a6e75f0d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USFWP0500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ae4f25c8de0546232062b8afef22ac82d1cf4c40e5ba84c51c1a581a7ff610. 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/USFWP0500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344dc3543ff4e19f0ffcdb2b252b16128c55886a4088e36f728344e8f3d2aa06. 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/USFWP0500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291d16698ec6d475c2e83fb950e9cb0c31fa86e173e620c0baf496c0335e2da6. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/USFWP0500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91127b469ee13bb924e157ed29402dc1d3f22ff4c59a5e9df84bc6f0a9e851d. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/USFWP0500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b20a02405f91d5ed15b05c8107a10e0c28e3cbdf53ec5b4151456ef12196f41. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USFWP0500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe0c011a8815f89d0582af3e1a862127777f0c7055f387818cadb47151a7110. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USFWP0500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88eb743cbc78eefe08400d9ef2bc8feeac3899127971bfc844bd7368eb0ef8d1. 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/USFWP0500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042fd58fbfdb4ed26ae6f043ee8f0ba028499ad2ea37ef0bdbbb6ec0b218e20d. 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/USA560592344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f098cc59a74e43a4705a2eccb611959e7781fa4f67ae5b162bc2f6bc0fa646. 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/USA560592355.
Cardio Grass 2: 2nd Workout Bluegrass Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc82ec70b881100beaad644ca20d364efe8f3da554212b6403f6915aec95e5e. 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/USFWP0600008.
Stanley Brothers Classics They Made Famous: Heritage Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4383d1277234ac46193925d7dbfe23a0eafe1bbd67a2ef67858d9f5f59802606. 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/USSE60413325.
Travelin'-Grass: On the Road Bluegrass Collection
Bluegrass Barn Burners: Rattlin' the Rafters
Bill Monroe Classics He Made Famous: Heritage Collection
Flatt & Scruggs Classics They Made Famous: Heritage Collection