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 0xd9389ae77f94bc09bd215ca59e02f70e67782c77e2e98a9868dad38f4c6bd5b8. 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/2e1e747a-23a9-4f50-a4d3-c83903ecf0ff.json and https://artists.proofprofile.net/proofs/artist/2e1e747a-23a9-4f50-a4d3-c83903ecf0ff.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 0xcf9fd9a609742d0487f3fae97fd6f95bdc5d0b9f9ce3778672087d45ba6c45b2. 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/TCAGB2223439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e13fa81bbc1bc6acd9d5056967bd13815eda975db788b49a96b82b1abe5fcf4. 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/TCAGB2223452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5670e1ace75a5dbf6ac3dcc364d76115971c8239e4602f997762f3a7a06589. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/TCAFY2120110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ccd83c16f88a2acd6e24cc76aee264352770cfe865133ceff9226bc95d0b0a. 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/TCAFY2120112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91123aec8e9a40724501912f11d1f1b9b5245a7df6c6ba4dbfaa041a12d68a48. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/TCAGG2224827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86dda87a44d0a610e7c4eff3e8f4f0e85bf51c267b9f9aad299e9df548098b18. 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/QZFZ22314582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f41a202a13a27873e866cc7810d8226a383485c5d69cb6cc3c8aa564ee31c1d. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZFZ22314584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8d21138e10c0f168edfcab58a8a1131dd5692b3f620510b3d1e0ab55d1e2d8. 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/QZFZ22314585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa053224f4a67c7b2be70d6b7e431accaa6eee1dfc7079c0c67feebdc46235736. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZFZ22314588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69bddb9d5138f8ffc85ac8a26bfc13c857cd54559a338424f3f787574848e021. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZHN72317069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0c6151f76a3721836730e935c9863e77d0eff7db737fec40e976777f24998d. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:46:11Z), 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/QZNWR2308498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398fcad09c310afae4149c759705b1976aa8182dd78d876f92ab9d395e370026. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTAX2304611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cee9bd63d16270892ca14e5cbc14e5d0eab9aaf6a350aaa05e7b6b3d2684ed5. 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/QZES72455440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b7557b0025e897bbf9828c8da78eb727787d14a921646a13ad125e32bb4e0b6. 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/TCAIP2437352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70392e4afc2c51b25a2392f1c997c968bcdd1437d5eee3d40932ab86a6574478. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:55:57Z), 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/TCAIO2479505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939cefad1fbfa28499d4dc100c7b8e7410e5c4bfe392375a0049c8ea3aada017. 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/TCAIP2437467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4006735cabe3412674b3f8044d980b1fda4a4b4612efc3291ae62dc71d3941ef. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAIP2437525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63af2fb8ed0c6c5f2845a44a1962cc357b70e43c7758fe7ede3b8c7a130ecb60. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/TCAIQ2437585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf8cc5d772572079b946f949bc96eafa0c0b6b5e628cbbe6a4ddb9854712f6d. 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/TCAIQ2437597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a476ff3ac3c6dc99115c9e41737828ec81a7dbe75054d785b5bc3738de23a2. 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/TCAIP2437647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc187e28502590fd078b3c36ad5e4482215e000466945cd03b00c5b7ccdb418d5. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:02:40Z), 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/TCAIP2437708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500e5439e63d7d796a32b7b7c74010c64b6628c32f7de13784a600333ae1d41f. 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/TCAIR2437815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10841ea034e97d2158c1966dfed7b8c616525d7409943b7648496d761de7ee36. 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/QT3EY2498663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2281e02197a9b0d11e8c021d0325722d295c57a619da84c67a882938b39833b. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZFYZ2590458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba904bdea0b0a578c61ef24b491e29c86d07108a9dadd606c78cb190d4c81c1a. 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/QZTBD2575059.