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 0x8f3841f050bb9eb48dd0f816133119117629e8e9538f402bb83d890f30890362. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d4d7fb76-3e6e-484d-aaec-bccffbc4e843.json and https://artists.proofprofile.net/proofs/artist/d4d7fb76-3e6e-484d-aaec-bccffbc4e843.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 0xf8742ff3017587fce578a059e2373b4a61023d324194e8a3cbe4a3c556a75970. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:44:16Z), 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/SEYOK2135590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16543e824e32e37d07ddd14838c9c4670469f1dbc7905fd37afa1f7f6d73678f. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/SEYOK2135591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960e61e3bd9a1cf684eb5a92c2a0158609f7e562623514bd31383c432bbe5ae6. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SEYOK2135592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901c3239aa7cf01fdaaf7d88ae6c9d7c7a2ac699c5f2195f02c70cf11e77842e. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:03:33Z), 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/SEYOK2135593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d2b585ef8fadd8613a561a39571754fc0b641569ccd6dd0b19015e35c5f9d9. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/SEYOK2135594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0438256e644b18c88bc7baf08aa5ad31754bbb9435507e6d05b5627c59e1d6ae. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SEYOK2151807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a26d06b02ad132ce5ac652fb263a3ec22e90dc80098671288ef2dc51b4633d. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/SEYOK2163539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa678f387abe0524de12a5197acb2a1af196010a665a6f93302fed47344a05e01. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/SEYOK2206962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b3fc7656d07b9207c4da0ecd217f417b2fe2ee8c7374510353ec458d2dd51c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SEYOK2206964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c3c7d4a7d8a1a62eac3a8059f1b01677798d574ec7cfad2e94715c8b37f8bd. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/SEYOK2222139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec0ea47b6eca51deb7440263eb4df12839ae68bd1c9961fc6173a13b96f0444. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:24:36Z), 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/SEYOK2222140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857bd1413d33b8b33338cd41faf525d3267ea6059eea4086e3f0999e28352d0d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SEYOK2222141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a126ec120022bc718932e20e70abb2e642f5c0f0274507c2c3a4be42f402983. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/SEYOK2222142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f9d6c33c885dcfef9577ebc1bee2d1689aeed16854ae4186c1c03c138298d9. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/SEYOK2222143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc00e3887e4e9dad4987b418eee86931e9d07c8100c9c03f88ada1e477c1d1d4. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:54:42Z), 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/SEYOK2235681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07204e50079324cb763c21352918c2387dd3774c281203aa6b8b83c8fd5132c8. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:01:29Z), 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/SEYOK2235682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1e1039aeaf6247c9599324c08d3cd62330e11134750f19e46d8893df534c26. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:57:50Z), 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/SEYOK2235683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26b3ef635e037bccb520e65b2047a22c7b4d097059b2099cb52cb40e135f0d3. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/SEYOK2235684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77cb6924d2615168aec5993e9b0ef2f068da3dcc702319c12d528641cbb71162. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/SEYOK2235685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0989ec337536971d5c23cecd5426985e201e4cf0d9f2357abe13312780f93b78. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/SEYOK2235686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2bb258144b62d5f9cd4a6104f7a2da9c7873782ee5afc4419336ae4c71ef9b. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/SEYOK2235687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78589d5e7306dfd9652b73b9b4296ce5a710119c6cb80f702c0ea074e81fb9f5. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SEYOK2235688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd945fa33c525a8caf22dd1e83b85dade58bbd2b46e1be1a564ea3a63d7619125. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/SEYOK2303862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe511898f4e6422a48d779b731e5311cd5cabbfe136e9ade4227b22620627bf31. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/SEYOK2306959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb94d0aca3f4be9973ee95e87e637839c8a22f581ce5b0377d1ac3ae15c0f5c7. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/SEYOK2306960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf80fd6aaa744e2a8408cc642b1e184346928dadd4ae431874f6c00fbfab9aaa. 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/SEYOK2306961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88228568f65eedcf4a8212c0cf67d3e3745288fe1286884a00d1610459f2b2d. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/SEYOK2306962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153c2e4b7c596982e61a8c2e0aa55ea52f5bd7dd222ca998f02dcbb1e3eeeb4d. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/SEYOK2306963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x073d03c81e972d8dc37bcfd57f4c7c481388d3f3b13995bcaf8ae06655e0d773. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/SEYOK2328271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6805483282ea2fd9fe9afeff7ada7b31748c23d9f917e03388c8aaa9999544e. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/SEYOK2328272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d40f337730c3e51418fe6b521f509a64266411be25d7e837c46765b032f8885. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/SEYOK2328273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ab7ee367ed939fa143da5345fd478e81e2a0e187b9d164a3b69ab3fcc210be. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SEYOK2328274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1941ff7d423c10b4f75ce48ea3f9787fbbf103d6582cb80ef43416e3b5c36c. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/SEYOK2328275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfadbd00545d5c07f76e4b175dd26417f4018db7cee0853e4ba6a308dc4f7571a. 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/SEYOK2402628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa817ae7c16e59b71c9065065f9f3cf345977c3eab31e23f4c16b5fee800e14b9. 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/SEYOK2410646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8683e7debbc8453a65408d23a496cbefa5b1e94d5352d5c95d004706d29905df. 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/SEYOK2410647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123f7e02bfc321dcb9dfe2202c3a6e1e820b703b292026763f90f83341d1248e. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/SEYOK2410648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5ebd0151718c564e6efca3fe75fdbd450e8205aa0040dca6bcb63fe114bb9a. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/SEYOK2410649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50cc439639617a444f397868c3adbc859b1f168bc134c25e987b8a59b2cc3421. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/SEYOK2410650.