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 0xf243a67ae8240d3c4bb152111cf386233ee742d817088c7bfc602cbb13c9703a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b73fb94a-a8ab-4a17-99d7-8114bbf456ea.json and https://artists.proofprofile.net/proofs/artist/b73fb94a-a8ab-4a17-99d7-8114bbf456ea.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 0xcc883eca2165a4feb753ebfa67bc03a08ec1438a72f558a69c3fa4a7bdea69be. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZ22B1974583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a9fa2bd3a8c37b2b11d20861a29b009725d1df6f0f379be8bb5f5945a53a502. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZ22B1974584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50acfc25e8d0590c067dd07b74ef4900517ab9ef497d9150072c662b58665e22. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZ22B1974585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7e7492681e508f9c65168a52ab649bb6f9771a4e4c462302b0f976f18d0d30. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZ22B1974586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f93b0cfc4d050d1f668afea4611194bb9f86a451d6cd8d66b580be012a1fc7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZ22B1974587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5700a63ee7ed0e68f485f2c19e9b49a4ede148ecfaea4ee5ae3adc95924c7b63. 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/QZ22B1974588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd093f7c831b55330a8a42c2f37d0e045789a10c7778375ed1bb8aab32a93d552. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZ22B1974589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71fdd1c5f59615f2b33c8c7ca1a177afebe99978963e18d91d28046563d72af5. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZ22B1974590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee55d01aaf2189d83746b4da98b207f67710580fcea14796ccd041728951c903. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZ22B1974591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d59525919533fa6573a1a7f97c281ffab4d50a26c13340f4224b8e35297f4e. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZ22B1974592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7c592f1c6b0408b070774497ab5fb2546f1079d417c4bc54e8e38d5f331a83. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:59:19Z), 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/QZ22B1974593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb954dbdec6e651ba7ee530b274c6615a9bd03c54a9a4737ea1eb1ce91d912cd6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZ22B1974594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2524839c7da42bfee763f42b1d5a0308aa78bb6a49d2db1d823dadf35d48a24c. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZ22B1974595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2141d3416592f1fba5fdf22e4030a4ba5c303f0e58d73052561b9026b82275. 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/QZ22B1974596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e1106d826e26824877ee0fe080426e2229ac0949cf7a3eb723d6a4587d93e5. 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/QZ22B1974597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26698739d1f88fb4a846cb196afd3ff87f82d4c20a209ab7224dc0d3bfa71d49. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QZ22B1974598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3ee4af85e4eddfb18bd279283329d5260c04e05a6e1410459a33d5d55453be. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZ22B1974599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11917d526a7c64371a7517fb5370b68fb7d8c54caa3f1d32c3568b7071e4793. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:37:47Z), 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/QZ22B2079954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de62acf9e35c56f57ca8b8eccdc77bedea8ffa7bbe3ed9d39467dae5ef22d79. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZ22B2079955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9681ce99879826515e6c7c95f34a3468b14a20a0ec5dc0a10cfba61bec909b07. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T11:05:17Z), 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/QZ22B2079956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7947fae88b02b8d5e3875561ef560d9efde907352eb12b1b744889d6352e82. 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/QZ22B2079957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b101c54cb9d34ca8de19e2f09e92006556fdb977d8179001d0842e1b830915d. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZ22B2079958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf808306e69a7b2d6d75d22d8a14ec0c8ea7fde2f22b8fa1199f9f29afb50436a. 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/QZ22B2079959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce56c253cdb4e6dfc90adcf73bea9c089804d779a4254b56b68236fae22e7a9b. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZ22B2079960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da76ac90bc42971d6fb9cd17603829109a92a281922d34b4088047e98c94807. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZ22B2079961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df936749fa946e53057b1176f18d567f457c529d7ac733eaf0133d92ba28167. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZ22B2079962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf290fc5b31346b72355a38921f788531cfff180199ff7d4469f20b153746ca7d. 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/QZ22B2079963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8ebb3c4b7bc2665723ae01a9ac02bf9b03d458163fd8724dbeb362c1eeb282. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZ22B2079964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf69c66a84def294c6e1be3404b99ae54cfa95690668321dcf5b5b39474c70c8. 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/QZ22B2079965.