1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xa529c1deb6eb88e42aa365c46cd8312d1dae718ea4bbe958d967daf61203d0aa. 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/9a25b8fa-aac4-4f8c-909d-b8bcc083c847.json and https://artists.proofprofile.net/proofs/artist/9a25b8fa-aac4-4f8c-909d-b8bcc083c847.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 → block OTSBitcoinBlock must exist at that height 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 0x7d749d2fed16a8697d1d7680b79ec35d3825dddc3ed111c88fd4a3d5856695bf. 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/QZMER2381979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428c5614e932660b1c5744a961b0a76bbc3b227eb752c1b61f6ae166c76cce7b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZTAX2357116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1209ea702c0a14c16c35d488a898eff9b7f86b0d0f73caabc7b5fd302391f502. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZTAX2357121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a17b9634c9067497713276d27ac9c91998346cc4597a2518d953962cf51c10. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZTAX2357123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007dd901bbd3ea1e4ee2abc52aeb28cc04c6efbf4afcbc8c62cf69f2fe9c89f5. 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/QZTAX2357124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dda434a143131fd7f659a810a368ec1ee0e795ca189ae9728ee4d21161653ac. 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/QZWFK2387362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8d187612673b1272e1f45fb26dcb2682ea4449b9b01c438b5ef58b8ba187fc. 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/QZFZ72413772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22acda8a1926fce8def33033c364168f13ddd98bf99407f7b22c670c37c2dd94. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZDA62493332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2973386453699036fd43deab0b9cc6b3e73aa5e17866837770d793d81ef71c06. 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/USLD91755967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56b730f5ee17d4ac01103169cf53858e5da370c31a6890a29b4945da2954b78. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/USLD91757341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9fd55791b452b206d88906ac164dadd8e8e23bccdb6b7e432b255c6be4b2c6. 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/USLD91757427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09cd116e45d9b02511885da82c5ecc931f2f3f3c51f6788858fdb8d204c4f4b9. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USLD91758331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965d6d610230314e61eb39fe44c322001cf56b6600a4edf32f2f12b114120cae. 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/USLD91758332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09bff5946dd5a305291e76b309e6a763cef133795073910623513c6de0fe9b60. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:08:49Z), 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/USLD91758334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7feb5e35191f08615621bbeeb87a622969753ff1772743e13168e0e6a99079. 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/USLD91758335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5e09ec39d16b639ccb644c9c77c1d11debd072d0301bad7af9632dd2c6182f. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USLD91758337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0099c8d5fb074aa7a89ab411a39c7ef7d0121030c17b8613c44e0605655fbaff. 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/QZMEM2434180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568b64279f7c8cad2b9d0b721fe429daa262285d95a499e2cb0f27611799da10. 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/QZNWQ2410630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68793afdb5cff2499a2fb9ed6f23f73550fe8466b78104180b14d8ce7c919a51. 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/QZTAS2402149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7cb8ae9028dfc2c47f70fcfcc5df3c2779b4b1b1c7461e85465515b20f69104. 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/QZTAZ2453581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ba6b96c2605ffc77155b8f3ecd6d7c67b1e3eadb079fcfa144ff87975e68a0. 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/USUYG1590980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf922fe18bcfa81ed743a2390dbc36dad125151eb9bf5dea1af418e3fc513b77d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USUYG1590981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823a5cff8fadfe38f35e522684211b28d00cf49fd55e25c325f94c353908a548. 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/USUYG1590982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84bd7dc76adb39ff87e3cd871c1916151092ac28036be1ab13ce005086f83be. 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/USSM12405489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0a5e872e1dafaae9b7a96929ec41d206bb3d767d0e51256f09bb8f22f2c05a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZTBC2446222.