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 0xa0ed869e300949b0b3d4c12d554024854cedef8bdc58c3867f73996a1fad0975. 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/339fee7a-9ae6-4959-b36b-af14d59ad046.json and https://artists.proofprofile.net/proofs/artist/339fee7a-9ae6-4959-b36b-af14d59ad046.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 0xdc2ab26d8db8fd7dfc3c881c4482946e781945af2ef82f9c7bf0b5d460e32ca5. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/MX3741200153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2a45a7c7b30bb81b6fe6a7fa786dbfd1a8a8ddc0bcd5e6db11df749e58d316. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/MX3741200159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa4b9586a5476888e1170d5ec2c90f1c28e6b652ac7847a17a828f9f29ff52a. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:40:57Z), 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/MX3741200160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f9c1d8437aaffbd788c8c593f8ad3de932c6a6dd9d039b23547d0164a8b127. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/US7VG1530896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ed35b1cd0d0ee32cd0ce04f7d2e544c044ce24b8ec46aeb99008b4da2e5bd9. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/US7VG1530897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7203ef14d5bbbe0332f70c884254a81705b5f5ee3f523c0f89cbf312208459ae. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/US7VG1628695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ebc898aff65c3abb7a29d3ab505d417eeefae03e682afb65e74d2557c7ce2c9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/MXB231900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7bbd952c7e0aaf2362551d47dfd69bb4bf24fa33c20cf44fbde51082066fbd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM6MZ1946920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610bdb200b3731b7a368254b81b4856b320a780d680de532c739ce5485cb8eb7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM6MZ1947043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeff635ee7f909d8726e23188dbcb243998a4311fef67697198f4dfa86a4838e. 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/MXB231900056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeff635ee7f909d8726e23188dbcb243998a4311fef67697198f4dfa86a4838e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/MXB231900056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ebc898aff65c3abb7a29d3ab505d417eeefae03e682afb65e74d2557c7ce2c9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/MXB231900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc87bd72ce3813548ac5d55f1b4ee5d864a6596afb3c6986b93266c52fe3617. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/MXB232000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc87bd72ce3813548ac5d55f1b4ee5d864a6596afb3c6986b93266c52fe3617. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/MXB232000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370faec00972ab925ca3ba1c23d959829e0de85d1b30ea3f3a5fd125518b055c. 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/MXB232000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf51747c359ce9bb082a2ed9b2aff61584564f666bd16923cbb938f91f03b09. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/MXB232000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090b860fb62ad1b0ef4c8aa12ac74ebf2a3365a3a6bda71f23b16b5ce1ae538a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/MXB232000042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d6b40ef053fe8552d67a5c68b63ba7cd1f8967bd320e4de4ee19345f63a31c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZZ8A2448152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c56974ec84312786d757924175a716f9bd8d026e357f4e61390136f51b10e3e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZZ8A2445382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab76d1fabd924881dd10a270a70d39bb68a6c5971a491e36f118e83b5404d318. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZZ8A2448452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4092d7cf7c0288de4b638f365f6f094b2e7796d384e93002d652f784d5b5f9d0. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/US7VG1766936.