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 0x3994389dd78ea7df830fd62915fbfde21444a73464e5fc819cd267bb70507e0b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/39307d41-eb40-498e-b338-b877d9d98b14.json and https://artists.proofprofile.net/proofs/artist/39307d41-eb40-498e-b338-b877d9d98b14.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 0x3fa5a580d608b2e36b93160e04e7c38133fcac7359422746572ed218dd7c66a3. 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/GBLPF6788329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2a8c990c2fa0d8d7065850fadb8d26a90c1fb5823b2e1ae9938e5e7d173cde. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:12:02Z), 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/GBLPF6788342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01f18d5a60109392429c5fa66ede9e8080a1da5538b0be11faf3ff9d72d91bb. 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/GBLPF6788399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b63a7ce09bfb7b5a4c46de23d79de2b9ead7e5f37df99d267def189e2a26e5. 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/DE1JN2444543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab399dd4907d52bf8e087fb33a2fa4e95de2cc6b8b5c830be41985cd9a70fca. 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/DE1JN2444453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c748fd3b0cd01b571bdca9722387b41ec6ab6566abbd1134fdd2f74e63c800. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:54:14Z), 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/DE1O62456202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2434fe5807598b7ef177e8c094390b3cdd369c4bd707d44345491e0e099539. 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/DE1O62456082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81679d5e4d4849482cb96d6da1a9eea5d93296b21b7fc78b46e1d404688b494. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/DE1O62456366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc1e10bd3113e53bfa340fac58a445fa887ac8f4f21a05f93281b623055d583. 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/DE1O62456128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f120d2c4a1e0b7156aadde97218113502fe2df0353384a55ed0764b75c4761. 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/GBLPF2401490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee533bbb31da1157895bf9702f7c4906da1ae354628760af6b98f0ac4098144. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/GBLPF2401486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a003ea0b8e233323b8bd411f1efed8a335514a6950cb9548cc27c938adfc143. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:38:06Z), 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/GBLPF2401489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7961655c5fb910a93502739c1b4e08d80968485eeff65c98100be6526d713f14. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:22:20Z), 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/GBLPF2401488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd8ed7077023c9d2369308a767e4c3b0fb8e6681e3fafe8fd5e61b179f42de2. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:59:33Z), 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/GBLPF2401487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2a4e7ef2b794a67f73273a16683d5adaa9d5450f3c3763059e0c7ca1f29d4c. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/DE1O62456121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa78f3abc15ef66e4b9e4309f6a6fdfa5efc9c779f82949d88dbe98fd79041faf. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DE1O62455988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3694cf7aeed1b27e2f18b1b22020f8260c52032a860a7e3f9faf0db015354572. 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/DE1O62456083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd694c3490ddbd5317f174a19709e731ce9f74ed25fe34d809f6b1baf010c8f9c. 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/DE1O62456624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555c16c767c0ebf76464f1762cc6ab55b2e5ee65654e38fa34e8bc687f722c99. 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/DE1O62455072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562c6142ce28f05008bd779bf17c0c5a457caa223e1603693bfc1ee13d36d4bf. 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/DE1O62455410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda285ffdfdfa6d526ca472eb6fb87a229fdc2b5cc54feaa6134d7a2f2315e3c9. 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/DE1O62455331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b814e26d7c8b4a4cbf27282bb2eb6a2a0ca8f664b94369269682600c8cf8fe. 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/DEAR42595113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4340f6e9de6a35758b0689610f2dfe9e7a90580e0eb85b6858079301248c542e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEAR42580468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955edaaef26df05eabeafd72c0587f9d0b0d6e18aeb6b8c5b562fd9c301fc2d3. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/DEAR42530021.