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 0x4c53dcad52e7e6095035becf01eb2fa21b2f0a5ba7546a134ba89f40d18017ce. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/913aa84c-eb04-40db-b018-09df1cf4e80d.json and https://artists.proofprofile.net/proofs/artist/913aa84c-eb04-40db-b018-09df1cf4e80d.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 0xbbbed0b9724b0f4066c3d78c662f810ec413e33e559176481fcaaea274d4aeba. 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/SE6XX2513401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648239d95c5ba0d866d05f2e3799751d06790611a1f708f2e04bba2c5fc8674c. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/SE6XX2513402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97aa53578d18490bb196ba0f9e220a9575dede9b780ffca1a57414c94f6e8e76. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:23:24Z), 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/SE6XX2513403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4de6592cd19bbf1f5eaae30e459b310d3ce044fac1309fe6bf073e338e4b4af. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:55:04Z), 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/SE6XX2513404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd125f0cf543565eaae32268a79328584b2e28d35d7cab24401830d929f3d31. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T14:59:34Z), 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/SE6XX2513405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b78ecbb0ebb4f0cffb1804728e39aa6518dd0586770bfb6065a4d46777cc3fa. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:14:24Z), 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/SE6XX2513406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc7fa9153a333faf8e84b20bfa1d56dba3ea7a5eb2c007fb1276938eb0cdc4c. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/SE6XX2513407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe319145038c10c1d762188aa9e33eae6ad253c5919d19ccf438b2784e90d0427. 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/SE6XX2513408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e952121553ce09d4f920d417bcf6dbd506dc668fb14d2d217ce325f3e4538bf. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:25:26Z), 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/SE6XX2513409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4619fb894d52898af43f6ccc1db3c1ab9e93facdade74ec985a50d27baba0f4c. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:45:11Z), 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/SE6XX2513410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef263342bf32a82bb0451b30fcaa519e28daa4e82f2ef3d51a805ecc368cf87. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/SE6XX2513411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4368465a855a23b342b8faff6d86a825957e1268baabe454dacc3eca4243cc. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:38:47Z), 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/SE6XX2513412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b48ffdfa11cf3e4f1a7882110304b2e3505c076ee6d32f528109cff8041243d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SE6XX2513413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67e7b6fd1fa1bcd5e7dafda640f51c35e11d2df8160d6a67f8cf1b0f717d2c1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SE6XX2513414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a910f2ca3238dbc8d687a49b63544a50bf66c661229dd48e9dbf3d4187bc3d. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/SE6XX2513415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff45e3c852d7de7e38a380e2fe8620af199d2200c0b9112c098752e184a480f. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:07:00Z), 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/SE6XX2513416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159ba032ba020db1166754f4fb5c1fda2f5055d6db98c7046a00a17c785a068f. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:36:31Z), 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/SE6XX2513417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65034989a5af801b0555bd0424afa2c38d322ad457512d92c18b01115a5aa925. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/SE6XX2513418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed2d82fd51a993abace44b502f6a3ffdb22eff691c7c143b61ba1fa0d9f803c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SE6XX2513419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90263344df2fdb37d0e214262efb30a2265d2d749259163b8b2db3bec9f133b. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/SE6XX2513421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4e033565165b7e91007c8352aa0ecdb237d5c51caac271cd88c1c5d2c05048. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SE6XX2513422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5315ad0576ef05fdc718802457548fa2a66284366f0c665c25ebcd42629974. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-21T09:06:32Z), 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/SE6XX2513424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061a3008c0266d34ab36b2f45b4e1ef4fd5d65f50ff9d8915031dbec8da14bf0. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:05:56Z), 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/SE6XX2513425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc9008aa1d7a11782da8e6c1c932ad28b12baf58f0902f4fe44d8577db1168a. 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/SE6XX2513429.