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 0x62ff48c257e1700b9a4dc7ab2111cc72f11fad5abd29332da8e2c4d89fd42d25. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4eb1d1eb-b497-4c9d-860b-317357b01c18.json and https://artists.proofprofile.net/proofs/artist/4eb1d1eb-b497-4c9d-860b-317357b01c18.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 0xa8bd342b1ee92f7105fad7abf91da977f91d0f5f460249a0f59e618f95fbbf4d. 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/GBKQU2027130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d3fb61e42210ae675c2f4aa4f110199023e3a239b6fd78352cce99ac52371b. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/GBKQU1910626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda552c79b4d980a3835269e1c120d355366ea3e7520a7ac458262071fae3b6d0. 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/GBKQU1909796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82834564e9e93437342090e1e33395d1c7b36cb37b1603f30270db815c1c689. 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/GBKQU1539448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b94e13027824184037b2e35c77904582ad33994ff9b1665a72d3f34af46edd9. 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/GBLV61406302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe544a714caaffdb7fff470464cbd07bc7e08b440084fe00135e1194470a3f45a. 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/GBLV61406304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe698225455e196c4149be4bc793711691f109bb426d4e627f4f9a8daa388c967. 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/USLZJ1401848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a8d52a3157320b30e4dcf6f052e24d8836b5769d20f1e47dd4f760d9004396. 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/GBEH42110031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abe0f735c3c3808f09caf3baf4232a1fc34708a4282b9cac20530071a6ba25e. 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/GBEH42110032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1422f12aafdaffd1c9f59c60095ea00cc2a6a92ed77916333e66eb97ab7cad8. 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/GBEH42110033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0f2b87a7578547bd52bbd7b11ad4f622d5104344f7860d35bd1e23a8184aec. 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/GBEH42110034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ff7691c8576296339398a605e58996229dab4fa12e2d4b7d0d2e766dd827be. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GBEH42110038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3441c37fc1b25e65720ff4e98aad20f0462b3e2cc2f6da02f0779eccb46cce3. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEEE71600724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a07c9a7abc22d0d33305c7cf7df4f504a0c637dfa0f2c8d0101d2f521523c4f. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/DEEE71600725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a02d4da2f8ead7d3ab3fcca2ce0f35778a2bbcf4d909e15456d51c2546d1de0. 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/DEEE71600726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725968f25741d5ffcf9e851b49def71306c7683e1b59d0865a315e74751be86d. 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/DEEE71600727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6367885fd483a8a0390d34b83a02b2047eb79b19b30193c60a8a6d9474289b91. 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/DEEE71600729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80451fdeadf00ba2fd8cd77eb1e8237bb211294cd03a17c83d0f403322dd8026. 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/DEEE71600732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73f0cc12fcb7db93e3bf6d745a1a83300d72abddbaf098404998eb349deec8a. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEEE71600733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d143715e66c61a2f360ff7f0b8bb7a0e39c1c769209ee2591533107ad71954. 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/DEEE71600737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da66a05212db1473abd7961f5011697258aaaa20d35a62f1f5187cfc94b539a. 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/DEEE71600742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe171f16f1e5f321096606a78242b3ddd7171ad681fe392c97d73cb3697a064bd. 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/DEEE71600743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6576010b6a0fd8a5ed46276d0d131c679d148225604793e1d3c7a5546a6fbca0. 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/GBLV61819649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99eb4ec31d0f17cac476ac61915b0a09a9b4a16ad88740247fb6b7f7d83d993. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/GBKQU2057081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18f1bc3f10cc8e48aae91fca96c1ae4447cbcf8b3e9e7a259a07884a953197f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBKQU2021410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0f7145f02195251d270b71ad0bd8b2db609e6f78c601c2f543e8d87c80ef03. 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/GBKQU1959930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefdc0ab536f7ef68eaa04f2d76d5fdcea9008ac1c70c7a288fabb731fa840ba0. 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/GBKQU1915587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363c27da2f6383906725a386324537495523054ffb24fc3cd15cc56562597cd7. 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/GBKQU1753878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5288f4ee36216df94b4e95e6873d3aa076157ee9e32d50bd5c27814ffe88f9a. 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/GBKQU1753880.
Love To Find - Ian Tosel & Arthur M Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d2dca1aa63234b3f85bcbdb353377a2f8f915648145274f28d5d6444f85da8. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/GBKQU1753881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b87e0e5d07158c91d17904368d832a94415c071f73b74554a9ffeb79d03565f. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/GBEH42010253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bd2b3e98bff876a9771cf21e8ee5f63756a51433bc094029ec16c1624df7f7. 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/GBEH42010258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3daea5edfecf4a644a3cbacf6223a6654a024ce4c390903ae7419aef4852cec. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBEH42010259.
Zirkus Zirkus, Vol. 19 - Elektronische Tanzmusik
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584a1204d423b8e37d2154abfce125f721829117b5331b2d79978858924e1993. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEBE71700216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c110357b28f55973c64822327865d61796c7c469f720762e7b6335a1cdce11. 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/NLL8P1600150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00963dce3c04e6c2f8bb31283a402abc4b037c60e9eb0e442e3006a15e51c05. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/US83Z2241781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00b2c812a8f953a03ad62dc5df35ba712d0e5499ef3f1f74efcbb8428b6da69. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/US83Z2239641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93a880da9a6ad040ac55aa117bb045df816bfccd9bc57735e2d3ed072172913. 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/DEW871607475.
Zuckerschlecken, Vol. 10 (Deep Electronic Sounds)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ae7a9087aee7a7b7755c2f5282a519b2fb2ef1a5fad988330fd8da8b154200. 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/DEH741409114.