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 0x5dd422b3f6628b6551cc8b7ffc4de385a9e475f6c0c16a4ab232acf2e9d0931b. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9c0ed605-853d-42c1-bd6f-116c95eedcfe.json and https://artists.proofprofile.net/proofs/artist/9c0ed605-853d-42c1-bd6f-116c95eedcfe.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 0xba216fb9d00dc75cc617c029e8dfdb079cbca9f3ccced109ad74e72ae00abc8d. 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/QZK6G2488915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d305d3bf6463daf315494a5648b42d20069baea9de447cb403fe3b21c69f2dd. 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/QZK6G2488916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79837f545216cd541663cccf0b1b3f072c4cb19612630e228d2e99139f1c2dcd. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/QZK6G2488917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438cb5d2096be7e9446ba9dfb247c2b5e0034bdc4dd377c35fef846b4988777f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZK6M2553477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec7e8d43ae00cfe24c6339f9f372b134217ea7851cf6734f5ec08db7e813bf0. 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/QZMEP2509938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e860ba506a7b9bc3e57c23e633c0d46ee21ab107f3ce4b5dad07e8f746faee8. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:50:40Z), 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/CHF032508410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b441db168a37c5f666e0dc04be8e779e3b0875d54a261e19a98f3a36320b4f2. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:20:56Z), 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/QZNWW2548265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150af95266b4e4bbf495f24925e8188a2d10d16198302571c47dc90ff405ad1f. 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/QZNWW2548266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76cdaaf42c745da2c4f818e9a1df4e79d2011d41366f9aa218dbf6fe8fe5a05b. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZNWW2548267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a1a397fa1e819f6a497cf83ce5c8f6021692fb1544fa998a23277aae6d5949. 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/QZNWW2548268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c6e091dffac69603e99cdba563d93a3afadebe374fcbe7e299ede4d1f0ea4b. 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/QZNWW2548269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4939d20a4e502ac995a38d2dff69ed44bf9beecec14192e372cd2b139e8ac1ad. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QZNWW2548270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20055712db4b4668d9b55cf8f8de0a6d8abdbf993e75e44e76d48d6d50f7df4. 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/QZNWW2548271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3258348386b97c62d9602c295d9d415d6e8e19da7f165ed610e78258bc55da. 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/QZNWW2548272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed36c57dde0aee1b93c3483b0f0c2b7a1fb773248788a724112971e246df24d. 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/QZNWW2548273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2777700ef5c0aa0871446da9173c6266804a579ae29e9fccc46377e07c41da. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZNWW2548274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a401a05ad3c3fd9b7ef1eb2670766122493c545438212970281cca988a87006. 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/QZNWW2548275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78fde93d12d7df43a73c1c422c69081a97aace1d19e4a8107a3827270e7ffed2. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QZNWW2548277.