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 0x822987b444ea554e4ec9ae5020f4b9a2b7859dc084fce04d431b4b5b0168c1f9. 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/89c2327b-6019-4773-8183-4d319497f79c.json and https://artists.proofprofile.net/proofs/artist/89c2327b-6019-4773-8183-4d319497f79c.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 0x0764535394412c4e6da59d3ccf52267b8a0bf3b77febc4288728554c6b1b24a2. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/UKEX32136056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5b282f8b7f44adc40169966ab123510d19618c9ddf4cdc97231c24315735fd. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:02:59Z), 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/UKEX32138787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308ce7d1e4cf42dfd8bfd88a5e56e8e9784532618f046c9093e07e7f35a3ea44. 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/FRS182149532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1040827abc58312a32286d4d1e02cc1027b8dbd050bb0bdb9851ca5e83869aab. 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/FRX452247683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c668d7714be98ac8bef2fb836c3832a303c9da44740e5d0eb219d946f736de. 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/SMRUS0074056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba53219013c5ee0727ad093a1d32da1a429cc7ba84e6d6d10f193e53044a83d. 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/RUA1D2399374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2186e4cab3e0d14178edba2f1a7ea28d0e49107c8e19e0197ac9c82c1980122e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:48:50Z), 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/RUA1D2399375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ddb4d9bffcdfa41b2d33652e7f77aa01de15aff94aa9b8d3c9526991d1f215. 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/RUA1D2399378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ddd5c0aaab900f83e6381b8b557fff95db4483b034f92b85bbe8ca4b848c1ef. 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/RUA1D2399382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df86c0911c1f4512aebcf837e824e7b6e761dcc6eb71a546c290ba4810b1832. 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/QZL5N2332098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc91f1618d5466477877a98c41f91727c8896ac1ccc8aadb8e563e3281f4a30. 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/QZL5N2439509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f462bfcfff87fd95b094b861f98d8adc1bc8e37b24f97a5e80ad79b8cd5846. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:03:31Z), 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/QZL5N2445370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b3921792cafb86418969630395538a412bad2c1ce79fb7aa79f3ad02a74254. 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/FRX202224876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x548384bae3ba091d574da1f33c78e45c5b04e2dad1edd2aec70f562729c3a82f. 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/QMDA72175967.