1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x7e11e9fe6ee295b0facd1fbc712cedd2f6b2dcd1079e23291a1529bd7f65523c. 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/684e9ee5-a556-4446-b417-d2ff9195d9ad.json and https://artists.proofprofile.net/proofs/artist/684e9ee5-a556-4446-b417-d2ff9195d9ad.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 → block OTSBitcoinBlock must exist at that height 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 0x505c02065264e6768c9ca63a08500fd61a4dfdabe03532d30f8ad68949b33456. 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/GBPKN0400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7fd92c04cc27d7d17b1bad3909b52258e6b7ae6842ff9ec553eae6f69517bbf. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/GBPKN0800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade7d7c0161780b5d99a06df564151d19e8391b77a77add02abc5c18ef58f9dc. 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/GBPKN0800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc62405e790a66426892184956b1288f7e47e3574412cdd29d5c313c5aee135b. 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/GBPKN0800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6fc48c3958b1631a2e03b47e6804bd57bfc6f05cf735d08013c8760667c0de2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBPKN1200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa876805c3cc3cb228a6e2341e1a7d8cfe00b4e61dc1ae44cda5979bdfa7e5ef4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBPKN1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d8076c467b5259a7fa0e7bbf8e30befe0ff7e11377efa9ab9ee01ab079e852. 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/GBPKN1600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6151be808dfd81c3ff99299bcd43ede4a36baed47cff4423f24fefd7818e760. 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/GBPKN2101001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6465e11e93e2573649817a32d357072195a51a215df7ce945cd2748a38fb486. 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/GBPKN2101002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3885dbf4659cdab0602b819df873f6c4acc46ad9ee85aabdab10b60ebe61ceb. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/GBPKN2101005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9c8fcfad7c4d2f3d9106be12e827d30481ea2a8a7fc67e2dfa48f71ac0433a. 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/GBPKN2101006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390250814b5f4b5410443fa9dc4128ceca021b818d6d4e0ed22d25e95800c3f8. 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/GBPKN2101009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb85847db010616014c09438ed2698bb0fcaba0f7b0fa282774088de3aca41ea. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/GBP3D2100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da6f3987e42c3205a56e9588238bdfb460ebe52659d36bb6f99afa4ccfcf89a. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:05:26Z), 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/QM4TX2415319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78bf0f1f0826d4a637324deee19dee5ae48824a1e8a588e469264c6495e4a74. 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/QM4TX2415320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59dc2d3bb6a8b9b070b5af8dbbaaa0d1ea5201e2de40824f8f5988663142048. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QM4TX2415321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667138a06e3132dbb980948adc2fe02f6aa8c396bc53708ad5aa7d8af2a160d3. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QM4TX2415322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126d709cba26dfef5548c65f5e9a48155578d523baf1d962878a6504b664de7a. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QM4TX2415323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9eeb46789d6431b865fdfc51e1e9b0833df18179a5c0f70d10c0ce35a2b44f4. 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/GBP3D2400024.