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 0x94fb404399ff429ac1472c28982c0bc0037145cceeb2d225afbaddc4cc8e5971. 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/a6e0c801-9d25-4908-b2af-2040011868a9.json and https://artists.proofprofile.net/proofs/artist/a6e0c801-9d25-4908-b2af-2040011868a9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dry Bar Comedy Presents Kjell Bjorgen: I'm Sorry but I Won't Apologize
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 0x5ae7b2dced2fa67d8e86905c3c85ac7d56cb72e28d3f4b88d904201c87b435fd. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZDA71860151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcbfe5ffb70c5826128285e63033d75a28355c57c9c0cee93b8edd9b4c38e153. 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/QZDA71860152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c17b90f5bd0d698c96f629fb91aa192b8128ff35dd2c19074874ab7464ccc7. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZDA71860153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0994f9d2f01c634c34ae398047cdcceff730c1cbe2a89be4c436f8e06aa90dd3. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZDA71860154.
Dry Bar Comedy Presents Kellen Erskine: Composed
Dry Bar Comedy Presents Dennis Regan: Dennisland
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5fbfed5b5a112f70b6b902e4174e601527ce450024964e29aa16f3b970d2a02. 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/QZDA71867006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5634d9dbb83372dcaf273a73b28752f63a0a5bf9aff2cefa9c0b7f65d4466952. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZDA71867008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5621049fcfe4e550ccfdb04db9370fc14d9cc0a24d3cfbc143e6f6da60a4e7. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZDA71867009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483dc4ab3fa0c8c9aa86d8ac00635cf8fea59a42218b646144504bc8a330faff. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZDA71867012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d2ffcf60a08c73d0902f7d42b6c6c2835fb7daefb3f1cfc3199e0eeb4b080b. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZDA71867014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582c3a35f4815d904a809e9de9aa63d3e3d62bc8da89db0630c091ac7106747a. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZDA71867018.
Dry Bar Comedy Presents Tyler Boeh: Wait for It
Dry Bar Comedy Presents Zoltan Kaszas: Cat Jokes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c2f5ce0b5abb4813641aaef1a19d4486ba184a9f70312ba40ae7d48da7aa8a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZDA71873596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c075619273401164bdeeb607545150d716fddbe109d4e65ed33e4b6c41e7b27. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZDA71873598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61dfdbe0ff771f9e676a66e6e21311f68bac44ae2a5b5eff8e6c2c3d761e6d5. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZDA71873599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3080ec245fec7403caf0da86f800dbfef656f74598218381758236fe4f5278f2. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZDA71873600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c188a832e3b095e540466850b3c7d943a82b6a1fa1904cd4b0c443e45f1592. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZDA71873601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933cf8b3b9eed3fe126a0bdc38ff2f07c587e1d51801ff77a66ac2a17a12d97a. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZDA71873602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f0195fb1de36c37e1f4d9bb50c025c7d9813d63ffa1fb5fe7b7e3b3d02c73f. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T21:24:46Z), 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/QZDA71873604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4cee294f71b4cb3bfbbe70e9de945aeb47d52ae9332e271d5bde9d8352275ec. 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/QZDA71873605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c143890548ba62679165f237db6c233a42d9f086d1cad2d7d3bdb9cfb7d1620. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZDA71873606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49cd77cdd7c5a370ffe20e5d50596e75a7c497e6b6d225246fd0ee9abd16a29a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZDA71873608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6aadb0c14eda2cfc490c9470221c688c5ca3a5d2afc0624b163d27857e35345. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZDA71873609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148408d3df10879803ebdc8e24562de20b6a0f188230df48955e7a50543191a9. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZDA71873610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34cab5d4455c8720427754d0864148117c845708fb0c51a1787e6392cff4e143. 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/QZDA71873611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06344b9c932d8830bde5ede78bd30bedaa88237917587331292bed0d63b227d9. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZDA71873612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51dcdfcb1405cbcf4232b89bd671114e91b4df9c98cf5fede6650c95e7570c43. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZDA71873613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a20870af8e8fc661162c07d30d77d01975a57fb833e57d197080a344341f37. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/QZDA71873614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d5f408d899d3e8e39e81178d3af241aea20874011017e0716e357ab3ab15ba. 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/QZDA71873615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b815656fec16632c8d888e4abf88932df1b7802f2f0c99c0eae1c566a3d016. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZDA71873616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f6dad5c43e188169b7e37fdabfbf4da493467276774d449eb89112521d6e55. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZDA71873617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ce4df8258a7dafd49b134bb1b07cc28f41bc1f7875a2aa071860e96d81ba89. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZDA71873618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae2593d727fba32a1910ff42ed7fe2cd32c1023f90e54cdc170a7c5fb63f486. 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/QZDA71873619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f8fe5087fb2612d7c55d088ba0b398b99d58ca699950ad94a4f4f03cb27816. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZDA71873620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e52e65ee01529adc6ad15b21cac2d60c554f41dc1a7eb4616b875c1f64166eb. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZDA71866397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc1bd98d81db3bdda3b5f8e10cfaf84330052114e0de3996fefd239fb3322c0. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZDA71866398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a20f9abd62123942c62b45bef06b96ae4aa661f31294e5e211205332b928ae7. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZDA71866400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd5583e9d73dc8029af3b812ea9efc26f399806b515c795c29584a3d9222976. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZDA71866401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655d74524699d6a6768c87f2ba12a333c3ae664d2f2077d059adc04ca74bf825. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZDA71866402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5210c0f52d3d7b18dc01afaad9b1aa91383414fa3a9f098857b33427a00c35e4. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZDA71866404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da7980312ed762c864134bba1c0e73f52182f0c20584a26a8be157660d7420d. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZDA71866408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0348a31a834b61a1e729f2872405699fa011997c3ac97c8ca6ce0c0f85087c39. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZDA71866409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c9194f96a91335fe8c8c788c2741fc68b4d63a7ee84b48813549580cbd24e8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZDA71866410.