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 0xfad99a70c2197dc6badf93fe7dae247c1978e5bfcc0224a84cfa22c7bd2f19d4. 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/c97f0db6-bcea-451c-8c6b-f3e7b61fcc24.json and https://artists.proofprofile.net/proofs/artist/c97f0db6-bcea-451c-8c6b-f3e7b61fcc24.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 0x61837f6dfb6d24c52b9eb8a8536752f7bf737864ad20ab10e239e4a1efee522e. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/DEZC62136034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92aa7be6af6fa5f6e4089604fd6699873c4f1df36584688804406aad4909f543. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZTBA2257332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e81142bf80fe5f9edbaca82bfb0b3030606096eb1da987c04eec2793d1e428. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:07:56Z), 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/QZHN52387054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124cb5e4ee06e59752470ecac878917ba29a4b574c80296c95597e02be6773fb. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/QZHN82367326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41dff7ed874744d06a266f6825a78b7a587ba8f1aa565fed752928e5a93e266. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/DEZC62373677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17002083ba469e8f0fd0f1dbd7871fa94ab68c54c7535cfe7f9d108deca95cb. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZTBB2321896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18212b33cb886de2c5e0d66d56e0b26562e0d1c6eeec514eb60c9c47d7597e04. 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/QZDA52474988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8decfd80267ccedb5dd1e3ae819d71dee7fbb3e48f2b9d34e3d545a5bcbbc3f. 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/QZES72466877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f963cc839dcdfddd21a75eafa3e7883bfdd7d75ec599ac62092c8313dbe048b. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:54:12Z), 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/DEZC62434839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6175eb01c6d511ef2f55802fd2f4c5cec9efefce15287d28c2fc5a529f31a1. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:32:43Z), 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/QZTB92461996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79700d0938ecc1bf3bc9c2ed9fff4acb25b1e87ea70143bfe49483504327440f. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QZWFG2423335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43675c757bdb130724d0dfd2a1523c2349f218f97f40ed36a375548842b233d1. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:32:21Z), 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/QZZ7K2465737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a372bc86cda613abb9315a75380eccd7dcea6037d9c9ff0ff52d279da8c86e. 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/QZMEN2599856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19f70042b9660e7c0ef91616214e2a515d26dd85655cb297a2012cecd7d7a09. 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/QZHN92504630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29269304b8b6add2bd17a32a56fc4e51a9a3a22cca6d71e9ebc51f3692e654e4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTB22529933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e95406d5361b97d6a6bde47348bde06c1ce2fd22cded2800ee8b9be06c4a21. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZNWW2523774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c44d09f550c992f15e6c206a830f17265a6d41dfd0624c3ffca69defb45eb2f. 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/QZTB22529935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79700d0938ecc1bf3bc9c2ed9fff4acb25b1e87ea70143bfe49483504327440f. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZWFG2423335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56d76f1250fccb47d0f333184933d842c0d8cc2698ece036ac5c812dcad7b52. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:51:34Z), 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/QT3EZ2513321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6b4e43048280b40a2e230993653a15967c7249dd90398a3f56168060d59860. 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/QT3FB2529769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3485e3f7c01d572da784ab51b70532d44f9d78f0fc903008f57678cc4a1063. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:09:19Z), 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/QT3FF2541489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4c907e2212231d8423763c049397d7244665ecac8f42d26430f454a44b236d. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QT6E92537580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499f9ecba5b9ef5782528fd5569bec1c5072f0f3cef3579285eb459144923ea3. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:03:19Z), 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/QT6EE2508226.