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 0xc2745f9bdfce109cbde17076d572e13a7afd70318bcecb9a73a4e1734a1db13d. 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/c11c656e-8e8a-4083-994b-1aa86609439c.json and https://artists.proofprofile.net/proofs/artist/c11c656e-8e8a-4083-994b-1aa86609439c.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 0x180bb1a8dbb4b712a61de2e334187c32574e764284452c5de3a3358150ef8e25. 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/TCAIM2401886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323958978365d8cfc08d0125cb14ff84375212c3f9947c44ed2236972bec7889. 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/TCAIA2402860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8858193fcce35e7c1dceaa629a30caa2dc96b76f06b9da953808e919ff39b844. 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/TCAHW2442982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353244162e7950050a60e1daeb9a79b70560b0e23347215798fde2bb34599e99. 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/TCAHT2312865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffac690d34f8d9e1ec76e0b4c9ccd6796837acfdf229e731244ea41fb644380. 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/TCAGC2283226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456bcd2ff8586310fdbbc7ff9af9ec8482dbf097bb1ab53ebc768650b4372cf6. 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/TCAFO2113380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d64e2808fb522018999d9b233320c0b227475416c94c724ac7c8ef7ee05c77. 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/TCAFJ2126716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a88c0de1cd460366dedbd5c307b8ced593cfc1b77a04974f0cac7c2fafb282. 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/TCAEX2066709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b745988ea56382a3ac65eefc5a97f60e410773b8dc46ac45a09221e12221c9. 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/TCAEY2008900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5de07f23349544765dfc544933b16fd178a79e6d3a9d43177630744ef4851ab. 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/TCAEW2038704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75895ab8476400ce64def25f0fa8523d2a0cf34a095f155269ab860c05319f3b. 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/GBKPL1969321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d6bb034d9d80bfeb787f2a5b3e92596f0227a275785770c791d9e2b724bb2c. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USA2P1934674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207f95de6ce7d91801aaa8114ee831b9d5b2e63eedfae38bce4a888cb9999aee. 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/USA2P1926337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45dce9915b845d783ac31735a57ca2dc32f584ae78909feac188f41b0a6c3fa. 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/US3DF1800492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a2c012c3cb8d1eeef703d26281f2cf9f685ebd316ed5f972bf174f9321970c. 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/GBKPL2163610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57125ff8eb8d44be2b1085cf20a69ff1684b8eec85e2ee6f70407ad7dce1cf97. 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/GBKPL2163612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b1b56b2e5264753fde79697467ef05771880fcea4cc28b2930f24d792e47ce. 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/GBKPL2163613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568a9281faba6e658ea6352d4dbdfb50183ed0b03f13154e999ccbd23cfc59da. 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/GBKPL2163609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32cae20a6c510df284d1d5641ff5dd097a3c8281a81641b80bdba1a1d0f0fc69. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKPL2163614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7279ae06da002d893f2a8c452e5d6923548d25148ea4a84370cd193adeab6a9. 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/GBKPL2163615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046c022d279fc642b15ccca49399bee7af87bb294911779634579abff58b59ce. 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/TCADZ1861328.