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 0xce33de5a72a027c96d66aa3bfec21c1f83b09b9b1e74a9fb2c2a7ad6e1c90818. 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/23141688-7966-4bdb-9656-298806fbf499.json and https://artists.proofprofile.net/proofs/artist/23141688-7966-4bdb-9656-298806fbf499.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 0x050d04fee47558b9ee1d0d9ff1883b1d0edf7bc82c8e6d13bdf58c755b68d3f4. 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/USH951320004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5111e0da52269591c380a97ab8c6bd44b1c07f45e531b0da433a777e36d4d5f9. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/USH951320006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a60005bfd641877779d115dc966823ff43bef2de15b0044bcdcaff0692eb50f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USH951520001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8776f3cc4f135699f7195080e6e155aff6cbaf132944541cbda6e4b71833d1d9. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:31:00Z), 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/USH951520003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa699ec33c355bac52e9998de7f976d433da101e5df1249c2ae8fc5aa102c5b95. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/USH951520005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bbbeac93fea043d51948608ce9913d6fc337f882621531246bc741e8d7e4bce. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USH951520006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19edafa7203d7c13fd3d0eaf1b1d478d4baec73ff76cb2f0ce4ebc2cb62a8332. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/USH951520007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21fab53c7084903b1be40e674e21de825ebf1103b9b15011a663f5251bae535. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USH951540001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c2c6d323ac819ae65e286c6b0746b7093abcb9fbb3135f33fe1520a11951a4. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/USH951630001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbebd374de34b1901207c02c7928f041c2ed6e34a4712f56a7f8227596d4ec351. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/USH951620001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3012fc61dd9f17f9f1130c9686210103d15e7d99014a2dd6405e94f48b5f533b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USH951650001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce7cde24267697b6afa38fb2d200cdc487c16824988b7812476be4fd30da02d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/USH951680001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88480e4c7425aface60c1a7278402adf38eaeef98b4d1709fbd06bb538e4638d. 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/US8391700119.
It's Christmas! (feat. Ken and Liz Lewis) [Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2d0938439afc650090ce938f3557bc4e6ba4cdd9205d7f31a265c3357bbbbe. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZK6J2079377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d65514c5c6a6145b387fc2ddb526f0e40484a84401d07e8e638a3a8349c120. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZNWU2081436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8c91a84a36bd12d0249ee6d983131fdf418811901796f96ac193cde850e3e2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZPLS2004979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0fd17d3faf61d0eee503f514731a5499905222cb7d74b9778b076eb65455eb4. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZFZ32196555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f306de0c071efed1fca0914f10bc5a85f298a08835c3dcc986a8ef7d749bde. 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/USH951320001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb297f064a5f6467c9fb898ebfbcdb61a88fcd7f8bc792315b24eb5c31db997b. 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/USH951320010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72000e804ad6141c17c276d9352f9e1336f1f949cf7016e52013497ce2b531f1. 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/USH951520011.