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 0xd01fc719c44d63824ab9bb96e70cf4af379683dc432db04f4f31231a3710f362. 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/50fb27f6-5c6e-49e8-affa-a3f9d1f24f4a.json and https://artists.proofprofile.net/proofs/artist/50fb27f6-5c6e-49e8-affa-a3f9d1f24f4a.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 0xfb3f0e4504e7d85f966690e80f05a7977f145e31780a84a1b4426e6416badf2d. 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/GBFFM1912770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9426b030b51819f55cfd530f0076ddef6f64fe62bce995c7e5b16172d17ea2. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/GBFFM1912776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bdc357df49de2aef11b955b643a801681fbbddba057d0aacc44a4c6b47975be. 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/GBFFM1912772.
It's a London Thing XX - The Blueprint (Mixed By Scott Garcia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15f7d1650df6fe439acc1db5ea499292c2cd413a8dd93722dbd79fd63c60b18. 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/GBLV61415004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306c1d945106be78d820d411879a36f6a56a65d1dc2618817a53387abf37fdd6. 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/GBKQU1736323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e757b53f52b9f36542634ea1686db22a1251fea597aad6f4316ad75bcb25a9. 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/GBKQU1736324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35440dac14194a8eea4957d66775ec8a916bb282d3deb943a95ce851f1e8696. 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/GBKQU1703963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a2c8c10e9cbeef20ec457c95e7e5d59b6303aa6fb8ade3981339f39a015c03. 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/GBKQU1729331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f17b5ffd3b0b911ec52d0a20d9909c59e172f95474d944da361ef51632a663. 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/GBKQU1736326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25036078b60787085e7b86c747dff43f3dff037cd10a82fc6995eb9aedbaa99. 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/GBKQU1736328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012492a042e62a3b5233a7e7777a8df712fc6e755fa0f3bb3fe6702754b3ef10. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/GBKQU1704511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06845f9a5db5d988a6171cc4dec374ace0db0e0ee723920b18ae37179eba370d. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/GBKQU1704842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190ec966d0f62166bcaab422a66f296a07f8b09b7f35e0ea5175d7b0ef0f81dc. 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/GBKQU1205563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4c6d01382ce03037ef1a3bca5631c2a2ed6660e9864323ed8bba40ac3c4d88. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/GBKQU1736331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc970b2f8c4cbe291110fcda77f76ed8ba0ddf7bc957016f2d576992945cda072. 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/GBLV61415005.
It's a London Thing XX - The Blueprint - Continuous DJ Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a1be3998b11db3d1474f03fc82dcf9b69d95b18540b2d0cf4c777ddcba90b4. 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/GBKQU1736332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b99f9d6cd21855567b86d52fb194d96d77051517b668b528e2c9d09efb193b5. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/GBW9N1100247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344d2afd04aac6e526e4d6c147680b2bba19a0774a4641225434fc3ed7057d04. 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/FR59R1832078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fea867e4e8607b5db7f23da430b25505b16120e255b12111760a209d199748f. 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/UKM4U1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2e9fe42f65cdea85fca529b78746c09301310f57d360f37f94d160e8fa5e10. 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/UKLZ61800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1bbafc70d001a705c2292ea0834c49606ff7a128afb65602cd5852698e0c5e. 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/FRX201845346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e66139160308bacd2792d6bec1abde1c039abcd94d7e9c97b57690ae10e900b. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/UKAV81800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b2b6aae49cf339b43c62b20d2f6efabb99005f2c435dd3f047f6bc39d11e5f. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/FRX201845348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f9a12223a5721ef488920233206d97db9c6ee95149315ebca1aabd99428df7. 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/FRX201845350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4167779668dc9ac7716b18741edac98e2265e39ed6f38d480ce95bcc3f1a4275. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/FRX201845353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1a6ad36042f42d9e31034af4179649a5a13bb72a63825ab7737bb6acb96f77. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/UKYSF2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6327055f9029e176dc84a78d44bfb0225236e6056ee444b99870259d356de9b. 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/UKKP31700122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9cc32bd8a249efbb47a6b1e4d5632d1e357c44cf963098add72d84025795f02. 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/GBLFP1795163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698da15725cca8f9f5a421bd298af7ef9a101acbb228784ece7a5bf5a384de5d. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/GBLFP1744872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac80f08f9829a4c30bd97e11cd455d2525ab0d7f2cef52e70af5ad7303aa877. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/CA5KR1528918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e35244834e730b6e9a15a41a92232505f6b54079077f7ee13fa76abfaa446c5. 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/GB3RT0600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304cb70d2d50ad9690e2a80be6e1de12bdc267f9533f2581629e6d8788af8288. 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/USHM81541431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9612ad1752c0eb8fba4e991b514f613d5803062dbf4b001ad661c7ab951d2fc1. 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/GB3JG1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a8017a86846c4b7a714c9dc11b409c6148ea67641ba2c6d6c4888e4fd5b9f3. 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/GB3JG1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8171d72d5471b095667da4b6a70f68ae6d143c2f566aeaf1ee9fad43ea37da. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/GBKQU2111228.