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 0xde06d61afff17b0672a4a086584657606a5fca5d56594ae87447e8d0ad13b2ae. 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/961bd61e-948b-49ee-8659-f7f1e305f79c.json and https://artists.proofprofile.net/proofs/artist/961bd61e-948b-49ee-8659-f7f1e305f79c.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 0x15e84148eb977aaedb86369307b36e22af379663c7de031959c3363f1dd4ce5d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTVM2225505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb06d7bd51fd3e192aaf1f07a70c615a460078ea1344ab1fdd691fb745de619c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZ5AB2339914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd8df5d7e767a26551ed10a674b37a741ff94f865dd256b0a251a574abaddc7. 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/QZW9M2258224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e84148eb977aaedb86369307b36e22af379663c7de031959c3363f1dd4ce5d. 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/QZTVM2225505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84479bddd42d56ebc77c739cbcf2d673c80e26f9cf183c343689009f5b027b4. 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/QZNJV2219285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e46357692e9838ea3119d064655b6dc00c238253a680ffb9a5d96858eda53c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHZ32257364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841634b6ed1c98b8d3bb1a5df829d2c3858f3a05e322cb6d4b2b075dee3288d3. 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/ARIXB2402175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370189d5814c198d6cd2fa99ecf7c8a3898dcb4aff65892c0aa155d9e41b744e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTVM2318050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd0e90178c3b079551ed901d50ca798aa90713e4af60ea3c96a8708960aac47. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNJY2382507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8bc58496f82899c064ad6679ef6719ce655607aaa05d626235fade27acc887. 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/QZNJX2369531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7da53a13c6008ba87ca947f425da7d19a05d18e37e492a6416bbba1bbe5ab9. 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/QZNJV2314192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521dc5d8095f8a1e1785da24dafb8943bad3c1c197855409b1e8100673528f93. 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/QZGLM2218957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbeb3a91503fa636d102639be119c5a2b45bb4b1f19beac0d66a2b527819abe. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZ5AB2297455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad80d1ef6d2e0c6e8ea64ef1cbe9db0fcdb0202345bc6377df79d25aabf6d52. 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/QZNJV2194493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64978713f39e4c8473db7f7ce7542275b43c33b03d67526387aa4464045dfcce. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZGLM2135248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60bea393c56ea654f4b6fc5f2df0390d188eca43fc27012b79f657af658d514. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZMZ92004563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1988bc53850c310949b202e996e8978b117af6a711a002109e837e4f76f476b8. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZHZ52083245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b64c900b7cc4747d9f928eb017f0e17aa4f8c4d954956ccb9402fcaebba87e. 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/QZHZ42071896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7c90d0aee8c32af9df659855fd3f4e6a9c731a3383953d6bf50c281d44e5c7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZGLS2069293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862e1e40c0c3192f108892c2057d4db2f3e3fa4a029c11078b52bf713dc955e0. 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/US7VG2078918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204a698f23bd370cb832be748b87c820c21d0b98947638feee545780b86eb32f. 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/QZGLM1927312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46dfa76cd0bf1653532fefb035a74b225d36ddcd777beb94cf82cfcb372f3346. 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/US7VG1946260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba58e74593f74b5206ef6c6a843be13434e127a5fefc85aa4a3b4129e82afe7d. 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/ARIXB2202945.