thumb|200px|right|Cotton Valley honors the Cox family with a tourism billboard. The Cox Family is an American country/bluegrass music group from Cotton Valley in Webster Parish in northwestern Louisia
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 0x03a21a89aa7c5d0d342c9c615fa96634947b3098edaa624a9c43deb904f3cfaa. 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/3dcb8bee-1561-4fae-951e-0111445a16c6.json and https://artists.proofprofile.net/proofs/artist/3dcb8bee-1561-4fae-951e-0111445a16c6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
When God Dips His Pen Of Love In My Heart
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 0x660c751d74c90fa636d5053a3ee4263e4d1b8c3590a42374bfbfc003f3b70e01. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/USRO29302981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11933fcd3c49fcd5edad82ab60cd034d1db8653253a91b8f4d65ba271db3a26c. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USRO29329701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f79a494886592019ccf8fe0bfd777f0cb98e7e68466c5c09623d1d172904a63. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/USRO29329709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2a5a5a02f0591a09ad7748335d63eeacd4b78dbf4e22ccd72ee8157a2638f9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USRO29329711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6854e403eea716981a6b373ff7bcd769c42769010718bc3d13a8645f5581ff3f. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/USRO29532709.
Gonna Sing, Gonna Shout - Bluegrass Gospel from the Pen of Rick Lang
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b35a04d71b3d6cc0b64a6fd7294542672a3f6a7915a4ddfa3f0247ed1c9f81f. 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/QMEU31725218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2a5a5a02f0591a09ad7748335d63eeacd4b78dbf4e22ccd72ee8157a2638f9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USRO29329711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1be63cf10fda5e115234677f5c1ee36a8d1b8874339de46b3771b723574abf1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USRO29430710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e44a441b083845e4b474b797c1f714cc63f03e6a02b2f7a61902565a00e9baa. 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/USRO29430701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822cb7386662942652796294f002edd5725cabdfe617be6e95ae9851afe49306. 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/USRO29430702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f562c1c2d3aa5589bdb76aad3323aafccef5b771a2db796eb8d2a4bebf299e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USRO29430703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4264cc33eab7f8d9a7e3a76e8a4b636ec26a4fe996e2872cf48a24416a7af6e7. 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/USRO29430704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5ea88a3caa849127a9e0a9c6df880407858c37b4413689487baa9fc98bcaba. 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/USRO29430705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0499041b2b99515b00ddc452124ac448632142088f1e3c8140975b4054ba5e4d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USRO29430706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89fdbe333f02472e6474f46ba7aeb95e251b8ed34813e70326c49ff0355e2f0. 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/USRO29430707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3021255fc6b1156c850b1b86cd4874ceb46fc132fc54bb6380cd74eade822c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USRO29430708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16517fe3f913d5cca961bd09e055858d8c05851dc40edbceb6a9ec64e339962c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USRO29430709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a26f6688461599b3a8a91f33454e8253fa28e7518d83c6f3b7a6e35d6c3485. 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/USRO29430711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6608deff2cabcc8c8390e9381e6c611cb17454de19e5d5f55f5050079eddbde. 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/USRO29430712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3021255fc6b1156c850b1b86cd4874ceb46fc132fc54bb6380cd74eade822c. 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/USRO29430708.