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 0x6700d15954b6fb3aa7eb23b46f7b946358cdca35a978287aeaecbcd66272709e. Chain 2 (Bitcoin): anchored in block 953991 (2026-06-16T18:47:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2e929506-28cb-4ca5-9afd-3c2200962c5f.json and https://artists.proofprofile.net/proofs/artist/2e929506-28cb-4ca5-9afd-3c2200962c5f.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 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 0x38f4c3e6cb22c8f41adf19b5af426a60f7d7ce285bd31e905f1aa010a294dd44. 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/USHM80406120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728d71a9c0236285925978bde560a702b558c7a9873b7073b440adbd5322d024. 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/USHM80406122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15665ce92189bf324e25de90593cc6c47e22f4f0ddbf053081bf161a60b455a4. 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/TCABS1372952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c23ca3420e1e398f110c9c63ddb04132d6c31cea4731ec91cccab535340fccb. 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/GBCTF1000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1abe8148216765ff04bc21f2ab406b15d7b0e31de250998c7be5be2827487d0. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/GBCTF1000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97344891e94c94d9392fe9a9efdddfeacfe94e38403545e7d6e64de7ae843805. 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/GBCTF1000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b4189c8d7e175490eee478ed42d50ece699bf7e03e9ddb524eb27f6689bf9d. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/GBCTF1000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e98726cf0db68d8647cd7124be21bf8bf0e09731aef1fcaad38cc1720152cc. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBCTF1000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d403ff449a5b4e27110dee8eb002d14b58981de051781a058be9eecc1855e1. 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/GBCTF1000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855293373a346af18483cc1fe541ecefcbee6c70445b148819bf5d94533b0471. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/GBCTF1000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2360e8252eff57c4d6a5da8f7864e9bc02e9a65a099969ecc9ce8717c5e78c0c. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/GBCTF1000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529cbe8fc4eaaa36f1a5302fdb2d007768b4a4bff4c601a679af7fb7b7dd7f22. 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/GBCTF1000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21f9a42e773eea344f38e7c22ccc093456fd8b3bbfd45515d4e09461c9095da. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBCTF1000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d4b6e04895704f73a109849d4163b73b736ab4411801756f19a8764c9dde97. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBCTF1000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd04c7ce01a2cd30b20197c2194c74588742c9d28092055787da9b640a0449cd. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/GBCTF1000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecec74513a039748187458048dd8a91ca8fc0a6665614bee0ea12f258d1ba2cd. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/GBCTF1000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ed43575ee2e2d8890bacb187cef25389b844e397171f970dae942869ae02d3. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GBCTF1000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d8180a8dddee1053007a4aa0feae1182b59fab70ccb7ff05f79b591b08225c. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBCTF1000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e02398c685b02f0e4565dd91c2cbc5a9d74431e14b4ad37893857cdc2d5050. 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/GBCTF1000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194d8c0f70f9de1f7c3b192be076eeda158591aeb6d9673967befe348d3054d7. 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/GBCTF1000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81b76401a00f538f5d1e52ca4488ea168a134d159a7c58669300f73c4c4f756. 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/GBCTF1000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a95207c3c53f5971d9df05e011a2ce18049641279b294d6ae98b38e6ab1740f. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/GBCTF1000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc489e28b6eedb08e74620b35b7fa66c5b31951609aff0095572fb34622fd3ff. Chain 2 (Bitcoin): anchored in block 960305 (2026-07-30T20:14:59Z), 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/GBCTF1000021.
Tickets For Doomsday: Heavy Psychedelic Funk And Soul, Ballads & Dirges 1970-1975
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a9da6d9568f93962bb0e94380bedce28364577adfafbbf7f580bac1dd4e37f. 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/USA2P2147141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ffc629bfcc502e3f602639fc3041b2e5061529ff03d01abc50f2797eb3edd7. 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/USA2P2139097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd447ddd5ce310ba530e620b616f887ee20a6c57972d74b37ce14953dc4f9cb16. 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/USA2P2147144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c05355513c53058565a93927321cdb655376ad005482ebcd287f07bc3f2805a. 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/USA2P2147142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec55fbed628880e9f58a01af259b1d578261393beb931c01fe92d79cc2d20c4e. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USA2P2147139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34ed657b24f03e5a8194d1f30710efe2de281c1dd6c9a5367464e68bd69b8ee. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USA2P2138555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e47c03d8977664ee00c1c8f4d5215701e0a5d65317abc8e836b7209aa422a60. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USA2P2147138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c7ef3c2308c99bf6916100cdee03473696230dd52113a0bcfad68a9d2cebe2. 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/USA2P2147137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7162d03dd1bdd40f59548fddf2ed67512322b2bd459b8d892abb753de58cf2e5. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USA2P2147140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed3160e25c2186aa9bd6161734c6b419f37981d51354a8280101e54761324d5. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/USA2P2147143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a988befe07d47eae839e6b4c8430b72066c124f3375f73efcb959d4c0c519f. 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/USA2P2138556.