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 0x4f944f8dad1e09b59582df60ff2c80c36d01736684ff280eda704e929c9e9cb9. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d36b937f-7500-41f4-9810-a6fcb5909208.json and https://artists.proofprofile.net/proofs/artist/d36b937f-7500-41f4-9810-a6fcb5909208.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Never Ending Love: Songs of Romance and Commitment in Marriage
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 0x1552de7cfdd438f28de27854133e15ad397a2a23614e5c27922705277d90cd07. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USACX1301989.
Hymns Of The Wildwood: Old-Time Appalachian Mountain Hymns
Hymns of the Wildwood: Old-Time Appalachian Mountain Hymns
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146d665a2eb0167859a77778f087f514efa8ce3cf5b8b0ffc13b3bc08fd86c75. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USACX1302016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba29cc53d7fed1b5d00f32768b4cfed193a06cfee8ef369df4abdaa1e3509f9. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/USACX1302017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f19eefc1d643d3aa7ec3d952d1fd84d53e722ef405cf732013849684bb7509. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USACX1302103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb1d90316c5c00cc8ece037011869dd4673d0f837f0cfcbe64cf5e7bff4092e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USACX1302105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3959cf2822931c9b1065142b0e14fe0ec4dd4bce17fa9fdd86534d6c4b9732ab. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/USACX1302107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592b1d4ecec97b72ec437ae4b3dc45c73e8e6b7dbf5f66f5131a2d2ec30be7e2. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/USACX1302108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae044a209c08312bf239587a47f792164af1eefed22c388a28a4504efa30951. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USACX1302112.
I Am Not Ashamed of the Gospel of Christ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43be544a20ba48976f4438d79d449ddca412bfe4b8b3fcf65a31b22a434d2516. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USACX1302030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995ec9bd6df304b56343b7bafbcbac25191d12081eb3201a840bc50aae26ddd6. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USACX1302032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a723e8c182a84840ee0ce453ff1b99009480a9ade767e34729fcdac3787eba. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/USACX1302034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04401f7f32e58a91eabd8df38e2c0c6bc2333b5d6c6444d12e60aa641f38a61b. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/USACX1302038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa2777e77cdea168766357c56c831109529e6ea35bf6150e4657c828f1c47c9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USACX1301968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c50cc41e58afaa9761f24e09ed3fda4d337b6e39da8029aab77eeb42910ca58. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/USACX1301978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf436973b8a1224173757c943236ab15c79eb6c2bd09001ed2e0e226cc4e1c417. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USACX1301979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca18ad40cc2cf5c92b724a0fcfd97a062ad85a3b102e075d8ee572704acb190. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/USACX1301969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc909dc45ce44a9e3ce34bf49856c5df90a3e2c27d7a8b59f32264c192830e3fa. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USACX1301981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103de04e7775f2463b066dd20226dc714257e4d46bb2f43bd9ae3d72e855adf5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USACX1302166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c708c82e45b24577f2dbedfeaadc9d5fa1eb87f5a5bbe6c2aa749477878225. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/USACX1302170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b38ca5262d7fabdc6bdf325e14502722d2cff956f509c5b662e58b3cd347ce. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/USACX1302172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042337fb3c2ff5132075616b3f4de4340a82bcada518ca0fe66a3ae5c046b194. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USACX1400690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4682eec2d27c3dda13656eba7637cfea47865e39085261887bed513c0c4b72. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/USACX1400692.
Smoky Mountain Christmas: Appalachian Instrumental Hymns
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a9cfa27bed7a81722ceae2ee0209cdeec45e5ca5ad3559e8ec0b3f7f8cfc2a. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/USACX2200125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61927bd4ee2d543df80ff30afd04a5f8dc51b59236c14454667185ec478c6b10. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USACX2200128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2b166ec3092a6299f251bb9c1614ece0496981c538c243429cc063ba4bfdb9. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/USACX2200130.