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 0x71bbebf08c09c19f4570edfea1264306afb03c83a70114dcb14ac0c841a3850a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/670c7514-9d01-4d55-8343-fc05fca31712.json and https://artists.proofprofile.net/proofs/artist/670c7514-9d01-4d55-8343-fc05fca31712.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 0x89789a93359278adff050b15cef2518f60994cad7acaa55e7b452bba37f67168. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T07:56:11Z), 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/CA5KR1703118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6416f4ec0155b9a44a478f5984fc317c0ead963374a297b20a1cdb287775ab1c. 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/CA5KR1703119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0338ed0beeeb25295f10e01c6be4ec8b62ca34f572696ba288a9dfa40dafce. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:49:54Z), 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/CA5KR1703120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7c9e5fd49c5c2037294a3ef5b83e7a5e5e83cd4a4aa82dfdb5e5d8656f645c. 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/CA5KR1703121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd907b0c3e7c04f19238330ccc233789f7b775cd0147120ecd7ebfa901ac89fc3. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/CA5KR1703127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156a9736bbdba4f857bc09f9fb1127a0a5e8a435f9c0ee2b651ad0fc8a68de71. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/CA5KR1703131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a6f3052c8b9b1ca541e3daf26d942370b7feb2f6ea700bac9bf4b2540b086e. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/CA5KR1715781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8addf72e28b092ac4746254015ab27cf80ef94c49ec4f349b37d2468e7ac00bb. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/TCAEB1906345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1550892beaf785433ccf02ca47f05cb49fa5d9cd1369b948076cbc1eb3867b. 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/TCAEB1906349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b75f6037073f025505302011937e5dac6a8fb4db0e5e176f6b206e053d7fa6a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAEB1906378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2d27ee63f8ab78e82a458caf847ee860dfc0bef5dbe6124dfe9abc514ea2eb. 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/TCAEB1906431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7335a52c83ef01cd377dcb8fe2d71f8548ab9b2dc9d92e5679b45c5ad39960ad. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/CA5KR1813012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0c1dacd77460cde7bec1f347ef71e3108bf943d2d1e3db58225c58da944590. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:54:22Z), 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/CA5KR1813015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb5e383e8a3c2210b00c939d464d4476d54f97add91c4d01810aa1f0cf5d7d9. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/CA5KR1813020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab820eae1ab867590459fd644b4481af8d232549b26112d5262a0ed910ee56b. 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/AEA3A2398545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fa324453260639f663654b34363a69e003b8dfbeb4296fa2bf6a844824ea12. 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/AEA3A2388433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f1a76895f79b9e554cd26e17e0b35da721bcb13623099170517ecb7db665cc. 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/AEA3A2351565.