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 0x07bc65fdf74f9059a8ee183d6ed9fba2d5b8d65faa9f9475a694062ab57955f7. 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/479767ed-b0c0-444b-a954-d8507c43c453.json and https://artists.proofprofile.net/proofs/artist/479767ed-b0c0-444b-a954-d8507c43c453.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 0x9d39854b94f952beefd6617b05812c770d59110a4b834e68439193c13c8e67ca. 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/DEZC62200132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ba069bcb2b27aa396379ecd38675bf85905de38a4219cb846c42379a509a9a. 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/DEZC62200135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae9536dceffd42f1c18959618d728f8a909bb56ac427f510d72d4a813788c60. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:01:11Z), 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/DEZC62200139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602a2e47718d2acd06ea9d9b1989d44d1524a4fd45e4898339ef96f13181345a. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:29:15Z), 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/DEZC62333985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc619c3a1de63939a782b516e0cd9e111f24b3bcbe583bc35efb5fae2ccb7d7. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/DEZC62499134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c8142cf21767220db25d0fb65c53148221e9e52d90284641b4df7b6a435954. 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/DEZC62499135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e592624d8b52df0e91cc86cb9131b3a85a095cc070f58a1b60c2b8dea6e766. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/DEZC62499136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6f0f330dfe2b78686a188d971cc340fb59bb3f9d2390a6d323b019136699b0. 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/DEZC62499137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f41b4098796b3af4b81c871a5c79232f6bced6e9e9693729dfe8e6a65181d86. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/DEZC62499138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7c06417a44704058c8ae4e81067419c14a4f22713250258d7327df84cfb5b9. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/DEZC62499139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa7a8014c427ef2f69637fd352a5ba0099a98fe0386854847b0dac93dba242c. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:41:40Z), 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/DEZC62499140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ce25349a8bbf88ce306e0559a52287e098bf21aa36ef3064ac86cd9553111a. 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/DEZC62499142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b7fe972e2d6aca6f8f4991cdf14e64dd6045726c5afdc19827054a0c75644f. 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/DEZC62499144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f45a1aba779a434976db910e17a69014798dafc01332f08329b839ee3ae41af. 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/DEZC62512987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d62a1113583f1dc5a75611ef39067a15f9d364a199128cdec2adf468590b264. 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/DEZC62512989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6d3ae0a6e95330f782ac1863cf58be5ed54aa669144a7bab89fc55c2d7cbb5. 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/FXQ132200087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d390ae9d6618e8109e0e46c8efd53dd5d470fc7407e429939384d1036664e3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FXQ132100034.