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 0x473be906e570b0d61bf24cfdd47102f7758cbb48ab3d119492528c4f81b24de5. 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/45effe6c-a099-4d81-9f76-557b0499f5e1.json and https://artists.proofprofile.net/proofs/artist/45effe6c-a099-4d81-9f76-557b0499f5e1.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 0xa855b7ae810f710657ca6b3f2aef06f8a2aa8a1131f87db8c3ed5f5f954e9b77. 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/FR2X41828212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9ce5da4c11b967d0b29ad6be832e64793d3f705645ea727836c58bfd67e9df. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:08:39Z), 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/FR2X41828213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10060d9fb17403b27ab6601c8b331942295c14dd6cdf7914ce8111da7f8530b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR59R1892205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82816b8392386bf0c0409dc8e28e1232b3dd5f36e30d221216a03a38be3f9f08. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:49:55Z), 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/FR10S2035192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f90935e4d270dea3316ed9caf2073797ee9526b16641535f7dfbcf315e21aab. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FRX452025576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f50baf4bb4f80e10d9a3075f61f7c1c33b8cfa9bebe2dadae0d3e66537af8f. 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/FRX452025577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26cce2870b521bd4cd8e18ae30496d87dfdc99ef01a020b0c6d17e2e92639a9. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/FRX452025580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159a64f4154d7f909465f5e09fc696a1cdafc5e3c1c9f27e01c05a0c56bcce84. 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/FRX452025581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea008035ffa3f8f28824502477a9a389eb5b3100f467b790d7dbeb56b8ba654. 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/FRX452025583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88167bf3499d5152234b47dbd7a4ce1011b332315932e782bacc89354da63455. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/FRX452025584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f90935e4d270dea3316ed9caf2073797ee9526b16641535f7dfbcf315e21aab. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/FRX452025576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f50baf4bb4f80e10d9a3075f61f7c1c33b8cfa9bebe2dadae0d3e66537af8f. 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/FRX452025577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159a64f4154d7f909465f5e09fc696a1cdafc5e3c1c9f27e01c05a0c56bcce84. 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/FRX452025581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40da174118247b24072a4fb1a928922280417f022df96d8edae70e186fcdae8f. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:05:08Z), 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/FRX452025582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea008035ffa3f8f28824502477a9a389eb5b3100f467b790d7dbeb56b8ba654. 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/FRX452025583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88167bf3499d5152234b47dbd7a4ce1011b332315932e782bacc89354da63455. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FRX452025584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612216a964c76709e2de5d44762c8527804f6574398621699075539879bd298b. 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/FRX452025586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f50baf4bb4f80e10d9a3075f61f7c1c33b8cfa9bebe2dadae0d3e66537af8f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX452025577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea008035ffa3f8f28824502477a9a389eb5b3100f467b790d7dbeb56b8ba654. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX452025583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612216a964c76709e2de5d44762c8527804f6574398621699075539879bd298b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX452025586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b71502c8c0e550f051efa28d2f8d8f8d0a8b20c4f215e132b6133665d3ff48. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FRX282112383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d1dd1a455352e50a40e9f212d04345d3c8bd0eec97824719f01c7b5dd2294f. 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/FRX282180332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0318728b0f82c9024d54237d08212138835c7afaf0501b9c820bbab61c5b1932. 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/FRX452138600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8234daff0ba747841e63f89de00c3d6ce1547648080c5ee1c9581e0fd4b236. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FRX452145874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464c01eb3e3ef657d3ad2a9c827880287ae9ad683842292a7d366f7d0b15ff4f. 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/FRX452145875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0318728b0f82c9024d54237d08212138835c7afaf0501b9c820bbab61c5b1932. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX452138600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb928a1fc07436b1978aa97d9988c85c3944bfe1e12109eb5b3114d9cc2d0f9f2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX452145877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2221778fc5e1ea95e2caaa1f6a2de6f08aba7d2f92659d2bede8961bf9cb85. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/FR59R2214982.