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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e72c30e85218f0e12bffe5f7542aed0199d449d83ae332e81a96dede8770e89. 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/d7ea9568-f112-437b-887b-219a24b4122a.json and https://artists.proofprofile.net/proofs/artist/d7ea9568-f112-437b-887b-219a24b4122a.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9c4591d733ac8fc0be2cc8b51c6e58a64f59342b4669db43fe69cd84d220a0. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/ROROT0606002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d9e034c538e1a6a5174457773f8663957dafeb041460f874a3597c92981f8a. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/ROROT0606005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd520393b2ae264df683a60f922b216b8926eda02e5ea85a87303858ec783dd75. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ROROT0606006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070fadd8c1aaf7f333967de484258a2abf907cdd32decf09fb0c5442b05b75cb. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:17:27Z), 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/ROROT0607202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f3cc8ef608e27b22448c7aa3ad9807d974e0b0279d90d3780887e7a229ca69. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:57:36Z), 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/ROROT0607203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50afec767439edd380fafe27ccefa99a0327c65cc728836480ef0695f4115fcf. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ROROT0607204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d8636d4a9138890759102ab184b3b3856e7b3746c80eefe0954732213026ec. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ROROT0607206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcbec57376b19596ee64467a21e1b7f0dc16c8fa49bf1e177ede261345020916. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/ROROT0607207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017bde26e7fd90e7a3c08108ca3c086104ff4b87af6b36a50859df438dfe7bea. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/ROROT0703909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f978314d66c39b07f3f0a69d8efe8512688d7b1ecb930f1c970faed96b2119. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/ROROT0703908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca43f1e2d6459012183b047b1c94893cb838f63a38aee277aca57852e1ba098. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ROROT0703901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4606b537c7e23ee7887f67f3b0dd5a4702fe4b2cd758632057c1d205ee2727d3. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:24:27Z), 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/ROROT0703902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b8b424e031c575540f81baa0fddfc0718f88a313ef962928bb335fed54bf20. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T03:55:51Z), 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/ROROT1105901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff854fb5d924a62566d009de2ea89070e89d3a283c15aadb68d570cde6fa4ad. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBKQU2068593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4ac7a094c756467de1d91c317838d3ad7a8f1c1a172d259839ac2b533fb3bc. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBKQU2068595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6c6a67b039eb15e544360ca7b5d4cc5f64e990670e1920cfdbadd2e7257e48. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/GBKQU2068600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0cf9ea186e49be5daa2305626e47150c32f3371f23996d8fc66baa2092d1e4. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:47:20Z), 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/GBLV62009686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ac51877b1252aba1e05ebb993e1245d1c0d145d83c58b19686f7c0a76884bc. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/GBLV62009689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6094fc41644a1e5a81d40d1e6069d607948ece94a9da2d9ae6fb3e09aeeea2. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GBLV62009690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794c754f74d2fde8b1352666be3614a6f0f85d12a6a36b00b7a84846a223bc61. 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/GBLV62009692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680c4697c91e7b144ee0ebbb111458fc2734f6063b5c870d3f5ce6ec464879bc. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBLV62009696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a5526640cbd7e37f377e2f7cd89109c8648b72f7f860c270a38e968bc5b21e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBLV62009697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813d49fb0003adcb812a2270f25f3b2dd55ac14d99475394ec998c84e07a1c93. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/GBLV62009698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c578c17e4b2fd71829fa06725d3d2c8774f54a497d63ad26b601869f015eef. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/GBLV62009699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821be676b7c115f0cbf397e6ed3ca7d448abd176a1aa128bed9c00a71fae691d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBLV62009700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92063b5e389494f43430975192cbd262eab660134aeef72fc4ee63df2ab99c2. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:37:27Z), 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/GBLV62009701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373014ed048b779493b467252970b3a5c4790f89b219c226905134e7f11241dc. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GBLV62009703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4545a853ed052b52b646d29502b8717b69bf8c9f606811839121e06b17e30de. 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/GBLV62009704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6aafab6d3b6b9618ad69bf0bb8ca1cca69db16d235a159f06314ef928fb2b5f. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/GBKQU2227308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72309e11d5be2e3baec86d73c4080b68f8a0c51655122d721561d44b876e6618. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:03:10Z), 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/GBLV62216981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8699ca7d8a6a6d94981b49dfce5aa3e5f28bf17466755dd9f11997fd3bfa41. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:28:48Z), 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/GBLV62321332.