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 0xdf64eb775f9cceb58f7e578b517d4b501555e51381f715f5b65d3edb058579e9. 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/f27ec857-2080-46fc-85d6-2e038b9f43fa.json and https://artists.proofprofile.net/proofs/artist/f27ec857-2080-46fc-85d6-2e038b9f43fa.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 0x80581f020abd95b098383e2d225bdc12bf7843786f3c41bc8b248c31bb01454e. 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/FR6V80778195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b09436c2a81d9267dc8ae8516a81a8ff2a77ce1922890820b8afe1a741bc5d. 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/FR6V80778196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0e7c4592d5560a9cd86cdd8d129e1800257f9e28f64109fa982777b3f600f7. 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/FR6V80778197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c042a47307f5e32d0721534d9b9f9710b4c7dcc867f8eb2b05f1194e533355c. 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/FR6V80778198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14248fb3df2d2b2dceedbabe60c4ac2f74711afdf16f5d054f028bec13e2ee49. 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/FR6V80778201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c89b614a8f3e2f9dc1cd4f7b0bfd55701169df1de620abd98023f25e514ef6. 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/FR6V80778205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf6ebf3427863c2c62915a9679f287a4363a2b4b602f0ea218087f4859ed81c. 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/FR6V80778206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bda8b544f5af26c1164929aaed940cde45a749b19bafac7b013d52aabbcec7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRX202414535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959ac1dff1ba8075d20d7b21ca1413f74e2182be39504e9fd5a4d9e10f32712b. 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/FRX202414536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4906d2eadf887375f19d1ed233e5edc3f1747488ec90c0b360b663bdd29ba1f6. 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/FRX202414537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e85f71f37cffe15ed72e265f0d51fe49a017e4b14f1abf589de05897e469ce. 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/FRX872309111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263ebce2cf36bf403538f8c576655a5935573764557367b8633713525004f8a1. 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/FR59R1964227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4cad0f66e33c1e3934ab5681f785ff7711c0ef307bd46128cc66981976e2cd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR6V80900089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f784a5c9fdcf612fc9acdc81c4cab91400b86e0955f55c44d76a0a27b3ad85. 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/FR6V80900090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d7895a5943fea3c54c5557134f97ec315393e0f437db84168fa7c00cd04d39. 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/FR6V80900091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2d5c596311bb7faaa0407edabb02a3eb753d9130f14f877d0d85d3d68e7fdf. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/FR6V80900092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d40ebf0f6fa978c9fefd47ef8bd695f05989d2e3da0a557519e1188134e2caf. 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/FR6V80900094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b0c960261dc4d4769572592ca97ac22cee256736cb730dc77b41c402531fa1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR6V80900097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9972fa65d6f0b6d3dd9ac7ec549106420a6ad216e5d8406556f40d7a0eda19. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/FR6V80900098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a0f403e61adbe02eb7a43de9a865f9d7065fcdace7b5415bd029fcf707b791. 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/FR6V80900099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8584a4be92d95230daea0ee70f3954dd0b02eb8b2c58ed341fd1b4a54b4cf0b4. 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/FR6V80900101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0a7fe38d868dea522f99b2f70aa77429f0371d9eda26f044b2b01beb15a767. 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/FR6V80900102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0a9d2f2b5c670a737d3fe1b7a14e7e27119053b3a410f8aa43fa0d0b75ec6e. 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/FR6V80900103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e12bd93b0228c1b2b5557e4cff478015c0116b008df4a43a40d80450ecef7d. 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/FR6V80900105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64ec751673679165b66ebd097eb2628b6deec346ec59ee20047b7aea434cc7d. 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/FR6V80900106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffaafc2dd15e7c8de12092dcb3b120bc444b1c18e2b95130e27c70590b78b583. 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/FR10S1799285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4121ce00317c8beea1751e013b268310de347f066346a30f00181bc23263bee0. 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/FR10S1799287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677bed39d996bbb99388e881506790987281defa14efd4b20184df449cf4e161. 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/FR10S1799288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8e1332486563d8341266ff140df0bc9fa2cdb4df8e953b9c383a3ca0c0ea60. 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/FR2X41628935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2a5eaaed3a3ad371e4196ba897f32781aff14a4b90d3c6a43fb4c05f398a6d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEBL60950470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ebbe0170ed40724756d066156fdb03eb3010e39f75f605eeb23698402a286c5. 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/FR11R0000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0145e88beee37cf20ee611691152e6f62325dc2b94b621ea25b7f8a3e8d68a46. 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/FR0U91202218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5343fc08fc6da363c4be0c556e130d6f44cd86f07aa6b34a440166af5ca0b0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR9FA1700050.