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 0xbecd9c4b770a0f12608cc8482ad55ec114561fdf54fd314c8b8c18f02d6d403c. 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/640e75b5-2521-4d39-bb6f-e357ef4fe7bc.json and https://artists.proofprofile.net/proofs/artist/640e75b5-2521-4d39-bb6f-e357ef4fe7bc.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 0xfc3c8ce4a2b0b902b7fc706f075e85c78d081b4187247abb220107be9fd37bdb. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/USY280785833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49fcfb2f358b2ef57b28457d28748edf319ccd8c87d964454cbb440098b08ac9. 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/USCGJ1074581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e79c697d151d897f4b2ca075d053c12cc1e7f935865ab87fd30eabe7995ae1b. 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/USCGJ1074583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f81a1350d981b8afce4c6a09b165f599659f472fcb2b86c25cee6065e8198c. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USCGJ1074584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa0555fc5444c4915c5d658050de7000ffd9fc8d855d9e7a492fbf92ee1048b. Chain 2 (Bitcoin): anchored in block 957550 (2026-07-11T09:54:43Z), 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/USCGJ1074585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c1ad25081d43be4042f3b46c1dc8809399662ffcd617db195cccb2531764a0. Chain 2 (Bitcoin): anchored in block 957550 (2026-07-11T09:54:43Z), 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/USCGJ1074586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0183c37dd6c1797e3d116373d4ff26df6595817f223dd9528101f0c7addaa7. Chain 2 (Bitcoin): anchored in block 957550 (2026-07-11T09:54:43Z), 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/USCGJ1074587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43300036603038ecd7b3d6337a28d1240a69380429e9158841ae18c617a27530. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USCGJ1074588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0a6170eba0ca9a1b89dcbfad52368aceb0f28d18121c4fca93b4dfe1847896. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USCGJ1418625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd828bfd4e5ca4036d3471cb0cf64c86019596fe5390f55ffc867110d654011e. 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/USCGJ1418631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe610c3e86ec5cc063412db2d99b1081b68efeaa36483dab5240851784688684b. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:24:36Z), 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/QM9AA1660656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300a7ded396d6ef93d8f3ac48aef7c8bd1b6c57004bbf8b6d5ef1345166817f4. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:03:15Z), 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/QM9AA1660659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4a5415eb387c7570786a14e267ee0b24638cb020bcf0b0443414e78c6ba5da. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QM9AA1660660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657e67906aac00e268656f90aa06d84414f92d42a9edcfa1e774eef8e9750c0f. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:12:14Z), 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/QM9AA1660662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa137c1d7ba5b7b9b15020d022dbcb79158545b92dfd5e5be8c1995cc3e806ef9. 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/USHM22148003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03254a7577b565435067993c3ff6c4d9636f2851a17c43fa087d29697fdaf96c. 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/USHM22148004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac5640d9f0ec79c1dbf68613749ad66091146f637ab3cd73738a8dc95bdea21. 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/USHM22148005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41220ae7298185506fc9886b906238441413c1ac00881918677989072486e03. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/USHM22148007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece63abeaf42dc615e46d50823b4d5854407895bfe68c4849b1867e5f0e79ec9. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/USHM22148009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67e4dbebdce581ed04d52e623c3a419dbb2ee9a7c5a61eaf3aa3b350a220cd8. 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/USHM22148011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8550266feb15b214475acd13cdac494629ed501e88dc1f4239125acfca2c2b0a. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/USHM22148016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a088cecb8ee78cc0c15f7e98588841c2b17d55d956699b9e6e0b8ca135bb058. 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/USHM22148017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c7f0dacf1cb6267b291b1185e148f82ca942f13ae5d28ce3026ee41d57c788. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:04:30Z), 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/USCGJ2258025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5361f2f3669625403806af099ee990671e800e61659ba7beb926fba6e1bde7cd. 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/USL4R2479778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1870ccf437fbf26e5e742892b1a0e7c88b904b2c232605d6ac4c290483319d. Chain 2 (Bitcoin): anchored in block 957810 (2026-07-13T05:55:46Z), 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/USL4R2479779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29449a20f2ed29a9bf142b4f235ade1525e495bfbb62abb48e5cee26e956d399. 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/USL4R2479780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85006fe8924f79db4c444e0864cd91b97bb615816ab0ae64252daaa497168074. 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/USL4R2479781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26d214e8d3ab414c791f5dcaf6c4cb5fa730691d69ec3391c72270e0ab613f4. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:31:07Z), 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/USL4R2479782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966c048fff7f803e5d51a5d308a020e9312cbbac7568de5236b3ba75da437ab9. 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/USL4R2479783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012e101d2c30232eaeeed0d12abe8233e56533458b3a3440e78e6f8190a57fa8. 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/USL4R2479784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b36f237eb4b2c445662dc3031430adc19d08affcd53ea79ff94701c877ef90. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T01:00:30Z), 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/USL4R2479785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa5cee06358a0c6c430b551bdae7ba7100f8e7f2a5daf39dc349fe0ed404633. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USL4R2479786.