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 0xe15cba2de4f42a62b14c4c6975750ca4f93245dbc713ecf32274427fbfd423d8. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff79969e-4b70-43b9-b0cf-4f700c3caaf2.json and https://artists.proofprofile.net/proofs/artist/ff79969e-4b70-43b9-b0cf-4f700c3caaf2.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 0xe9e319310c49e5564a5171e5596385aad0805ff65a7285b8ae87b2833448f7d6. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-22T00:35:11Z), 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/IDA172030217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d5cc0f7f1368e041823dce38cffa3ba784139cf9cc814d53e034d195251c82. 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/IDA172130014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3c8e80308d9334e8320f19a0710ef5d1c2e3294a4cd0343613225c42cc41aa. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/IDA172130212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a6a8f4025adf9e4a001972afd2552cc71caf241e0d7aba39cab8be169a445d. 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/IDA172130214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf8f2d516fae9b05dfae2efd9b2e053570db7bc2c094adb96361c9473b72588. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/IDA172130215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a75fbe3ea9ba6e14ecefd3a3a62f1e0b5d09d2f2d7891a64336520e9b80eb31. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/IDA172130216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc011fdcaeea9d9a6759d5a632ab31e0b433a9f6c2c961b71aa1e1c71a7a26138. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/IDA172130218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd735a16d2bab44a0262bf1028cc3bac6410c4a0a232be88ec68d28129056a2c7. 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/IDA172130249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc17168c5316b7774bc7b48d7226aa15424f108ecda9e20cc25c16772568839f. 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/IDA172130250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaca08fca8ebd114514662aa608413b1f6a76e6b2762818bce11737ff8f733ae. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/IDA172130252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a5fe4093cda60d15b56e5d10264ea32feceb7266e6f0765d01ffa6ad5a6e3f. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:07:54Z), 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/IDA172130254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d1c872a3c79589c11bb0a7cb9e1f6d9e71ad85af06bc3a6afb8b30331e9da9. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/IDA172130255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc4a805a04cb55171dbb8d6838fb2688119b3a48b06034f3ad362b5a260efff. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR10S2249598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc7ce17a5c671b8230a365f59bfca30af03d77e5d06e49e7302a8ab421553a8. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/FR10S2249599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a2b27cc53a9addfa7869cfb8f3168d70ee1beba2640c06ab5119cde149c821. 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/FR10S2249601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b210e309df640930b004e8db049fba3c391b4084d19b28e90f89f2192a8561a. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:53:27Z), 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/FR10S2249602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8fa6e727c3fbb222cc188be56636f727d3224746d3f6e968f8d28bbd697660c. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:44:54Z), 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/FR10S2249603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c81d6a6cdc07879d86a32a1be90874634b0fec51921a23d72763d6084d60586. 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/FR10S2249604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc52cae654844e52632cae964a8357e51050c4a65d4306383042bde59e5ec1c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRX452260220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20fafd48d517048c189a6691888c68d15baa5eece400c513e1a07d167019e09. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FRX762259557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92354bf9f1c73c4f0cd95e21ba6d219e2a9c8dcc5c8d203419d9abef35f11bc. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/FR59R2392535.