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 0x1f60b950213881206f6de73dcb37385d2620d74c277e12efa469d6c4abaac258. 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/0f26e78b-d6f2-4dfb-bfb8-8ea9b745345e.json and https://artists.proofprofile.net/proofs/artist/0f26e78b-d6f2-4dfb-bfb8-8ea9b745345e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Buddy Rich Big Band Live at the North Sea Jazz Festival 1978
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 0xaf2e603a9a9c0ce3067b8ce629dbe4ba2386414d1160b24bbd9b19ce2469074d. 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/USAT20403465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5768011c2b76152caa63743dd74e1f928376a85e957ce11f3a3a5db65ddca7. 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/USAT20403466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68acd438981fcfb10fc140fe5ee8841710c913e37b7b56268fa8378533116fb2. 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/USAT20403467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bea41348064728061ca91d33601361b4ce72b8e190b87c050dcb6f72ec2ff03. 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/USAT20403469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03891f91a1b5249979d841d8ac92c6ddc1198beccbbf11c9627f7e259d93d73d. 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/USAT20403471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3958b7763b06c9980c2c08a9a1c5c16d524f7606fdae2063e615f78d9e6aed. 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/USAT20403472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77caefe39561ee9fbd74ed29c861d9aee4cec726ced487713f0e0b0e88d34b6b. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/USAT20403473.
Preach And Teach - Live At Caesars Palace, Las Vegas, Nevada/1968
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262ac780ba78f0d3ae09d77e2f8c0c33de14afa376685742dbe7382114fbd8e5. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/USBN29600667.
Big Mama Cass - Live At Caesars Palace, Las Vegas, Nevada/1968
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd61e6811925e724480640570cca9935dc388ac07bd165a3b5edbdc0630bfe8. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T00:53:33Z), 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/USBN29600669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd88d9a0d526be06d875e38b5dab14bfa416c36b9294c82390b447b5db747a4. 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/USBN20000149.
Wack Wack - Live From The United States/1967
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d531c12a0325d575b91a5eefc89b70d88033c341f26dda31a05e06bab8a9f6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USBN26700106.
The Beat Goes On - Live At The Chez Club, Hollywood/1967
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9ccb2d37764773815fee186f14cdfd6b8f974df597cbe94df73060ab8c3a91. 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/USBN26700081.
Modern Drummer Magazine And Blue Note Records Present: Jazz Drumming Legends
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249db541c1289cd9c132ebaf25fe5c299493bcd37a427e32aaf210029004e798. 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/USBN29600668.
Swingin' New Big Band (Expanded Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4881b6e0c7ecfcb02c5edf1f0dbb3b380a19963d80f48ff958e61ef19cd521f5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USBN29500486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398f615113288a5e27e9c150ce49a50772f901b087c7b0af8d023a232c42f394. 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/USBN29500487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca63567cd0daf03d995e308cac63b878d3785dbc5e2f0a4e092cfbdb97dac31. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USBN29500490.
Norwegian Wood (This Bird Has Flown) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136b49f6e9cecb17df2a20c63f69df677d95e1b2dbc4897822643be40430881e. 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/USBN29601235.
Big Swing Face - Live At Chez Club, Hollywood/1966/Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e601ebf58df81e2058eefae98856a3f7bc6ee12d5f89507bfc95248d5fe3eae. 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/USBN29601263.
Monitor Theme - Live At Chez Club, Hollywood/1966/Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30203cd26f19d514e6ba5a612270a173a611dab88d75be03ebdf8c69b738a417. 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/USBN29601264.
Wack Wack - Live At Chez Club, Hollywood/1966/Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db6591ff5b1dfe50c83652f67bfddc65170e3a302ea9a02b6fb097c14e2354a. 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/USBN29600937.
Love For Sale - Live At Chez Club, Hollywood/1966/Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ebe40acd6b6781f13625e9ddd219d6330b8a68d8087fd1f945717fac1d9b80. 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/USBN26700057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a247f2f912eb838bef95423418aae7f4c3a5d45732033fc8c243240d1d21b9b. 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/USBN29600456.
Willowcrest - Live At Chez Club, Hollywood/1966/Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2c27612aee4dd38fcc8876831d8ed6c862f05bd67ca856928287ac1a0700aa. 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/USBN29601265.
The Beat Goes On - Live At Chez Club, Hollywood/1966/Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb7507469dc461ad64e86145e33c7858e8e3b15d150d4dccc1e7fba24184e24. 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/USBN29600396.
Bugle Call Rag - Live At Chez Club, Hollywood/1966/Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9287c7ab13437769839595e55038ca8981cb3c8a8ecc61ee4aeb3593abc56c53. 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/USBN29600737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2b610c0c3b80dd3b330bd052de3ecdd3a03471967446afadabb9b7135724c6. 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/USBN26700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398f615113288a5e27e9c150ce49a50772f901b087c7b0af8d023a232c42f394. 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/USBN29500487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca63567cd0daf03d995e308cac63b878d3785dbc5e2f0a4e092cfbdb97dac31. 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/USBN29500490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4108504996d108c9600cc8945be6196451dcc4d85620cf0220551f8cb4bb478e. 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/USBN26700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54fe0c0ab6163ac90d41ee4923f1a1e5ebc2519da22915c878a16fe705aef70a. 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/USBN26700010.