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 0x2564e15fdcfb52166eade8f96d0e6df59288c8ac5cd8180cd697e262149bbe98. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b01bd386-36de-4d18-998f-7cf92662544b.json and https://artists.proofprofile.net/proofs/artist/b01bd386-36de-4d18-998f-7cf92662544b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Filthy McNasty (Intro) - Live At Village Gate Club, New York, 1961 / Remastered 2006 / Rudy Van Gelder Edition
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 0x44729edb356e398c57ce2a21aa5d6d9260dc6138da21c8a3fb795b654b4b7be6. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:56:29Z), 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/USBN20600262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288fc07712586f00f70409e325594fae1185dcf03d8b09bf4cea4bd7ff675d00. 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/USBN20000872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09253b2e4231460e8a9ced4f9107b151aa937eb69499dd1cef6d0fd29295df5. 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/USBN20300233.
You Want Me To Stop Loving You - Remastered 2007
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb181c6cd502cdd4d91eadba97ddf17dac0fb4517104f3bea6a11ef3c1128854. 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/USBN20701127.
Little Angel - 24-Bit Mastering / 2003 Digital Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80a9526957224f474f4366b9c773906cd40cb9af5b56953399899357d65c242. 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/USBN20300246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6893f388f0b868202a5fc52b93b3bf0f380d35bff0e93e604dea7d763499c129. 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/USBN20200185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982ce864dfbf3bb0c654115b5e3d7247c45d1b36d32becd9ffaf2a938ac17fd4. 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/USBN28700070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6fbd51b8c94395ce469d4f2291e642a48ab2fa78d045f3a8b5865b0987ef1c7. 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/USCA29900969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3d28aa950e9b4a3bf4425cf6864d30fdfae14d0cb2e7449756f3d4541224a4. 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/USMR80400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb29582a8e09572849714887bf780bfe1cb60f5a795bb302b8082097e9e5b8a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BREMI7300618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b928e3df6896f422be2face4ce04e1b00013402ef7366eb38d8f31014f573bc. 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/USBN28800725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3ad6fa0309fde6651b834f85a541d209c3ac3ea0bb49efaa2618216444a921. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:00:39Z), 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/USBN20800398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688f89bbaba4aaa573ba881d138e2f1f36abe56aeac44f538e38638b58c38af4. 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/JPTO09807160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbad25fee1e54078eb17201684658ab752f29a5f92f1d2e77847fe3fa93f4e95. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T18:49:24Z), 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/USBN29901181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5cdf46d0cb5e502986247b75cf1ed852941b813372ea76b61718b29ee8dfaf. 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/USCA20001369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30a4a0bb64f3b8ebd70e9097b8234244e25d37b10f42dd87df04a1f65421b49. 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/FR7V30500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e58397efdbfe9544e6bc746ffa2783888589cdf60eb8d2d51621dc05807fea2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USBN29200196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711f8fe4b44eb23eb4cd34cb5e5eadcee5af8b907b89eb7ecaa94375d5b970ba. 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/ITO0P0401068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83a0f971533f5f1f5c706d7e9605481d025c150ce535f97d985852ce9b89676. 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/BREMI6500113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ef28279697656e6411c9914deabb79d4910bde25a7886cad5383a99ab47de5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USBN20100919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a6f11c55253d2de2f29aed79ca7db0ab34fe04fad125a508aab0934d0d7d54. 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/BREMI0501102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61948e3c0f594e7203636ef8b2fedc22750dbea5c7e78351665e4778394ba3f8. 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/FIEFB0500008.
Organ Grooves And Soul Brothers - The Best Of Billy Larkin And The Delegates
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c2516eacb0ab8c4e861cc72ec51504ea0d3bca2a5ab8bd0eb6b34d77a5f1dc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USBN26400122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ffa0837e9fbb3cd3fc5927af71fb97aba56226270241e92c46756ce14dfb728. 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/USBN26400123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb7921c64f4afaaec456400998648a4254db7987a541e871b685183fbfaf5b9. 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/USBN26400124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893ae8f4ee603175c844fb473e8498a79f2137b6a88db381a5dfbb55a52aef87. 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/USBN26600144.