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 0x974970ad6c2f9097f43519b4aa76c4336f371554295004db728f8257cdcb2628. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cd9e6148-d19e-4248-b1a8-f9566cef87c5.json and https://artists.proofprofile.net/proofs/artist/cd9e6148-d19e-4248-b1a8-f9566cef87c5.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 0x5d60cbc443413e6bbbae9f397206037108ddc35873287ce4b949c251c22ed540. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZTAY2319865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bbd3c92b423f098de23851e7f731c406b54831571de62afc45df42706c588e2. 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/QZTB32376202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91b6b6534a1b2e8fcf94a3ab5e2dde49d9412b379a5f558e7634d5c217e649b. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/QZES52439198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d42bef1fd510d3c128f764288f041cc51a1b800da720991ca4f5f13a3a7b20. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZHNC2518575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9041e528a310a92f4557349d3c97204577ec297fb82cc9146093a6860663e7bf. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QZHNC2518576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f08a8f736d96242b6d1a95a102cce4ba153ec62a0d88383da2fb2d92a946dc. 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/QZHNC2518577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384aebab663fb0cab2e92a938fe61314b0541b28234b197e9d8cf2dc3c919188. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/QZHNC2518578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f7c82f4eeb43987fabeb4ac6c59204489b752e58f17455347dd2922bc18a03. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:47:20Z), 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/QZHNC2518579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050a73f88b332951fa6bf86cbeada22b98b7e27e937a751451274f5bc231dbc9. 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/QZHNC2518580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33defaa4c587744b184f3acab080b9479eb3e7dc2bd0dc9b73ccfd36bb30e54f. 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/QZHNC2518581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb41f4ada4b2cd3752b47c59418d6554dede6dab6213a9dfa6e2e68caecfbeea. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:28:32Z), 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/QZHNC2518582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320a678328b03a8de2323ee54b9fef44f44a7ab96b796abf3f8733c7aa4ff650. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZHNC2518583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b6ad59c01da0d7c34558eedf8fe112741f540440276fa8d2eeb441d9f4591a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHNC2518584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4afa394465f3e5200ef1485df565cb5be981e19a502fe09621bba6ab56877617. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:56:15Z), 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/QZHNC2518585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3349c7e6fc35de4e9c20cef5c732cb536f169b42f62eba01bca5d95a255fc433. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:00:12Z), 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/QZHNC2518586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb889d0aae019dbd96c09066a1e199c55bf99b60308cce437e943b5d38057bb. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:06:37Z), 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/QZHNC2518588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2929e483bc56eec11be46b34e3525283969fdb5d2ed207c9e9e92e8a8180f33. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZHNC2518589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71805ea02d1e805346c598631bb5221bca126aed6ccbb745e0019ff1ac99760b. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZK6Q2508132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d4a10770df865bfe7085ec79f990e7e883a11490526d77ef5dbf763846b0b2. 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/QZK6Q2508133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9414e1c216367a4bd52f22974242c84ef7158b4bbec0117914272fcf11d881ff. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:07:58Z), 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/QZK6Q2508134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9101749b96bebd14518a69564a40310f9bc362050e590fb93b1ef6b9e85046. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZK6Q2508135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac027cb73b13c948df497caf98280d3cb7e0f438c724cf2efe27fef70bd11d6e. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/QZK6Q2508136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fee26aec8dd58f07aa76616aefff15dd60b4b692779b322191bf6eb8014dc70. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/QZK6Q2508137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c339e3617e5b1c7c204ed438f919c32489037a3e9983c3cc7cb493490f33627. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-22T00:00:17Z), 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/QZK6Q2508138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1ad247a5f0bbe49c77af93f9ed8cdc8d11f432e5cdf4bcfcf5588327e23bf8. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:47:46Z), 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/QZK6Q2508139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8ba9ac788c812333101d0879ae23cd6bde1b0cada0b3dcb6dabbccad21edf1. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:34:38Z), 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/QZK6Q2508140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9997602687225e6b8866006e9fd5d1386d0beb13197df30a43f2ac4a8e7e104. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZK6Q2508142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2653666b4e285621b9b7e0cbca1a28420c5ce561c1d5fe279998780d5a57db28. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZK6Q2508144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a1e1848512070dc72d7b4af23e6e3186c1a7f89ffac4f969b72be6b8c44e55. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZK6Q2508145.