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 0x35a593e34aa7453bb71d215157f95cb3fe35a82f9d5b0717213ed36a887ea43d. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4517b462-a059-4409-94e0-7706264f2040.json and https://artists.proofprofile.net/proofs/artist/4517b462-a059-4409-94e0-7706264f2040.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 0xe415928d18abe86c5fba0906c5d686b1b18a0fc6b18b105e3b6682d585b0fb69. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEY472277590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4256eb807daacd008ebb44f27470cbf154a6be9cf4a895cb8698d7cbe919efba. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DEY472277592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa817e072272de5f59905bb761246f408adc3255f0dabde8b13eac8d15ac06d59. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US83Z2350332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1ab393999be22a9413102e52918fdf690cac0378244dbf69cf54390e9a7c00. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US83Z2350335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15703a60b0d251035e5f2b83b1f1b8511dd64c4eacfc75de62dabd79a83d1d68. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US83Z2221213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c92676d60b5fbbe285e922ccb3905d4311f2496fccac71ce0473855d231eef4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZFP52483953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf31815e1067abef527e2b9c053a25b4bf71f0f5654d07cbcd8699c6db22874a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZFP52410698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6d9a0a36228085c971d2247ad55c303808bfb5573ef30bca73baa610e632c2. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/QZFP52410714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac6af852844280cb7f636037f4a4411ec81b203b26e834875f9e7f6dcdf2f36. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US83Z2350329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d47f616164c5859088adc0a3beae06dfacad49c3380ebd8b5074244997354a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US83Z2221212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27adc6870c175da9c8891ce18d2e6a18c9cab2d0d7af1c3fae0c264defc216f0. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZFP52298771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076932741c77b024ccc83f90487aa646e50cee9c28e64c788bcf5884977bbef0. 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/QZRPB2193141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b74ec789f379124c656a2a0bcc032210cbce011bc7f81f33830bb6ea38e368f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHPJ2176002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847501a8ab28362cd8bb1a71f10c8f48a5634e482809d4f2bf6eafe847ccf3fb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZMHP2047804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f542ba29f8a9772c221625f6ee50d460a1834baa7ccbb5733672a915b005cc. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZKDK2139556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f8e5f4dd046af185895d32f006615e92582604160e459b13384287148441c9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZK6K2048738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93c52321b0159f1f3684eb9e405795441d2bba70ea789d3c06d0adeec871404. 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/QZFYX2033749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedddc22028ad92e592a3082f199800c279d1309607624bb1293aafb68121c484. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZHN41984880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97aff06272fbda77053515bbc10827e752fc64950d1f700a9f111a364e77a32c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEPQ62000912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669b3be0d3a1731f9563617a5384b94c90a9a9aa625432d2e476551955bb6b1d. 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/DEPQ62000914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9ff1aaee3a4d5f93f6369f2d73909d3645d3a8ba9650a5762c7f7e4bef0019. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEPQ62000915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e200a9961bd5412baf8b606bd28bdabf2c4cac7693ae14ab5bb77ba9ab21c06. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DEPQ62000916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f63f408779c68aeae8907105a435faf541be7ef5892528d75a082255569b7c9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEPQ62000917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b49d15b27ca624dbf00d839242f9b971a77accbf253bb8d40e7584a6229011. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEPQ62000918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde758487f0f461eb14712abf195b879fc21ea66c03a9895694a163e482e77c09. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEY472472131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77e31b7efb48eb090bab681ebe955c2ddd686c734cd5e774b7d537415d6b658. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEY472472132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd116cab7e7968fbe8f0b6ae828b89d72011e4ccecd5e1cb2051d656f0df01b82. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEY472472133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0b674e2309ba0b8b1dbe5097170075531045361d5d16c08e1b9d89d7877b73. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEY472472135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fef88c319c2aa2b898977e2fa711066a2b52d6a07ced640ad13c23e1fef0da. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTH92315696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b81160ac3924de84176cf6f3748edf0bdb80325747ac58aca95dc28475f5e3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEW872004806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0a7de1f6801db0cee26da24ce84115e7d0ed234665193c2e0f4b5a75cc129e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US83Z2426931.