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 0xa107567cff125cb80d6afa117ed68360efa39a766ce430e84fe88e1912adff74. 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/170c1efb-a3ac-4c41-8310-9a0bf9560433.json and https://artists.proofprofile.net/proofs/artist/170c1efb-a3ac-4c41-8310-9a0bf9560433.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1ab1a8dbd9e3fa60c50cf57c0e514d731d6b86468350fdf3463ba8b042255a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US37G1485914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcdb28d45b2ebdca3ec77249a1537af8df5d4663d0467ff9cdfdb1bc4ce0f0b. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/US37G1686307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae67874d28d563e25d4d90141fd30fbf6097d67238ee9bc8b7abb7a370a75208. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/US3U81900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9f96b74f5cea09223035ba0585a3c9872b7bd4929e90f33005cd6385c895da. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/US3U82100050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454fbcafc636b543e1ea7161b6c2a806234e8f676f3b3af40725d22db98f08ee. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/US3U82200330.
Old Fashioned Christmas (feat. Paul Williams)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a6035312b09363b81bce1dc8e5efcdddbb7480f45f843174625dd7c2849f14. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/US3U82300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a6035312b09363b81bce1dc8e5efcdddbb7480f45f843174625dd7c2849f14. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US3U82300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa544419af853e576d955a37653fd580a497d2d4f398dbfb1523e9d7658440809. 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/US3U82400637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd10fddc2c170b12e674ab7f3ceedc01dcd4c725a033e157dc8a257eba79f081. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/US3U82400638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb80615351885e3a51dbdeb1627a0837c8b8e1ef2e1e34f7ea129b36434dcf1. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/US3U82400639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81484b0e249826c6e85b188b20ae768e9e5e218f87f03f4607942a89b3f8e68d. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/US3U82400348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691424fb09a53c6e0fd4c27e4745a985fd2ef74b2e9795cbc1cf2d3dd23e9eff. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/US3U82400641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa253c7b1780fdc845ea5ce50aa5992720e6c06cabd18a1f517fd988bfe5da0e2. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/US3U82400642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071d4dbf1d24cf400353c11ae70bf53e571b5aa96714231ca3eddebb50cc65d8. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T03:03:08Z), 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/US3U82400643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0fad7f9d24aefc7d98db8ed4c205b490d5c7848130bcaa792439ffe7fef2d7. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/US3U82400644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6878903bfa51b0d53615d6edd4d45b897f7ca2e79145ef914bd9c9c63447a0ef. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/US3U82400645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb1aff1a9982c4140d992a722ffb26c8012a5267bdf39de6b757a9889ea7775. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/US3U82400646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4089d862803d77a7af511dcec028930a15364fde85cd3932eafb86ed927afd46. 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/US3U82500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4089d862803d77a7af511dcec028930a15364fde85cd3932eafb86ed927afd46. 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/US3U82500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15aa51c6614c86d5b75961112b195c11c6fb1c2028d9d002921a93a147ea5a15. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/US3U82500106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49fc1be3893b41abca9e28146538138b49db4ab04f4828db422059223b69d6f6. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T04:58:30Z), 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/US3U82500108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd978e0aa0914a61c1c267e32154713eb51fe54da56949f43bb79b611b8cac1d1. 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/US3U82500109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb534dde12afc1ce8c6efe927e5e98a3c14fd4135897b60eec107774a9c45cf37. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/US3U82500114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c46fddcbf69a5da5c86469d3a8cc70892de7582c14eee1915f211889c3a3289. 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/US3U82100030.
Industrial Strength Bluegrass: Southwestern Ohio's Musical Legacy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a7f77bc20e336dd993ba7ac7b89abfe02aa2f3cfb97f103e2edb6a6c94f336. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/USSF12123801.
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