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 0xed2696bfbe2cb42ed655c5a6442530126f16d61f6546da6015c0e85239f97593. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aeaee630-9d1d-4a73-8d1a-ef69bc9fda85.json and https://artists.proofprofile.net/proofs/artist/aeaee630-9d1d-4a73-8d1a-ef69bc9fda85.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 0x6f2631574c5e07edc36af67a45e2c5f11a488e30e1b8705c06d669c0e3f44dac. 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/QZHN92094481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1fe36d14c58b6c00fe3945a2945e9702ebf1dfefc3d8e568d538f47a6b5732. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZHN92094482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40fee78782419c6bc0858905dac4dc9820eb29d65d0262bfdc27908a24606331. 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/GBSMU8406263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d3648e8b8989671f68b5e4ea13654cc4fe4ebb674c3365ce250071719cd5a6. 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/FRX202118628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e210dc8d67dc01fc9e4fd8b6fb3c8dbe49ca1372a3828e8ca9604609f8bc7a. 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/FRX282146494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c1bb3bf6fd4db0cde91a883861e0e732d40bdedbd8272390a0c44af0bbabc5. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:40:53Z), 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/FRX762105595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d7cd3d448672cf7dd4f9dae3885b55b75176e69833851d1baa852f52e9b96a. 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/FRX872178170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d51299a176ee14172ee3c9941a6389e4ae7eb3cdb0dce8795d76e7fccebec5e. 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/FR10S2222720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf47e849b2165c0270838a5e9ed14348c4aa5e0385254c3c6bb9b1ab5b90492. 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/FR96X2238676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9a9ed275ff7e8e60df3ab1c731652f13fdcb03d4e10481a248e49dfc80b525. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/FR96X2238678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62a85cbb89ed8dc117ed148b2199b6191c4ee29567c233d0878a6802a1df77d. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FR96X2238679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d80f4407daa081c2a1633005ee3aa5e7dfe6cc8dd22089c244fcb339e43945. 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/FR96X2238680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31578ce28edec05d2bd416204615086739c2f036076478a3e784a31c4aa1f767. 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/FR96X2238681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978ace12184d268f983b0dfc48280e36bcbe3984d6f04375977972aea1caa545. 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/FR96X2238682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbac56d59f450b885b478a4b98baa83cced2db92824ba75bb04be6319524d1b. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:02:13Z), 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/FR96X2268129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75dac545637a44b5d3cd273b95ea0ffba0a0a0712aa1b3bb7cf180ea56c6dac. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/FRX202291271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257c256d573f3bd43b91c0273981a978a279d04725022f728cae4be7a51a1b73. 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/FRX202291253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044192f9decc6f3cb8cb12a4f60704c69cd210adbbe7d90a986fe2ab4368342f. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/FRX202318935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75e9ea17b6507a2c30200b7c72d6464eaebbb6d34f4391765c3dff87fa2fd71. 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/FRX872395794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618c0033c7983344d119d4bb719834ab9d9c51c50d6c7bb0a212edb662cc18ba. 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/INSN12300970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111cb83f91953a702fe1751566ef366c5218d9459f5ae51d0132e2af48c340fc. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/INSN12400885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6374b23bf7862b49cbbda03855d9716dcf26587213aa876bd9e7365871bc2aef. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/INSN12401589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb3a8b19d1dc9016b2407821d35d79c3b0ac3f27934310285fe7462f4f110d3. 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/INSN12402094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156d080dc6e31c1754a65af63f93e3a173a63ad18ce14237f8523abacbcfebc9. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/INSN12403017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de82ad3f0401fbfc3757aedf474ca6c9df7d8f49a514d8e73ed99a0ca08065d. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:52:17Z), 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/AUMEV2532673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70c2adc67280b8cdad14ba3b22b4d06ad084f64015d45124a41fd01f0de97f8. 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/INSN12509011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b44a71ef6a98bfcd61bca1e50b58980bb6e57b9efe39e2c6717a09441514b2. 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/GXF972527942.