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 0x7f9204a423c45c878f7eb23a804a5bdd8c2226ffd3547ce232b15a28a6dc0d79. 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/62dc067c-f69d-4cde-abd9-2ccf2e2298c0.json and https://artists.proofprofile.net/proofs/artist/62dc067c-f69d-4cde-abd9-2ccf2e2298c0.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 0xbceee7f5304b84472e6da858606e74350e32cad04f2d92afd9c51dba736f066a. 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/TCAFO2132031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd44951eb78bce1779c904cd19462d93b96b8c187f294bacfe9ce887ac368d18. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZNWT2042664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6ba18b331d8b8fea92170b5e7a0c335312d125dfe411bfac5e4ef50e985051. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QMGR32247889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260d7f4ab38a4a3d8dce168ec7197d5f4fb949df218628e446f8eccdd1c83f36. 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/QZRP42256313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5873c3096bc6e77db698a176c5a875670f01725fad4df015ff63cacf58b67f6a. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZRP42256314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c27aa0d0e7929ae3b798bd5ee3542f45c89c88a9fa1c61f23ece4c923082961. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZRP42256315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb5b4c99a5e087919b6558a61ac99c37875593b1e1c6408f41a5529d7b99b05. Chain 2 (Bitcoin): anchored in block 957830 (2026-07-13T09:15:55Z), 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/QZRP42256317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8b32c92bb160e117dbc77bcbfa132e8dc61d41755ee8608ce34f2bd5d07695. 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/QZRP42256320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd46f480c5b859cc9a4b95dffa5164a907ce2c441fa52414594b10c1ea2f0da3. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZRP42256321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb425fc2e753575476f87a314192fcbc368bf36cf67435044c77ee1723d5f4285. 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/QZNWY2476175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911b5147ada6abf76a9a8baab5fcef8f6f7e156ab9df1b34b55778fcab1b48a0. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZWFK2447202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb99d579e275cc920549a2a1a132f5c10f860d2dbc277f9bc498cbe33f05b253. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:41:24Z), 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/QZZ7N2448810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66bef7aab3816c3aa222fb5453058f46f68e394e749f0379f9e54a53219c2d0e. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QT3EY2476068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f964f79600855e6d768bdff6b68be025a41c2cb9727abb44cef14602d2b136. 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/QZZ7N2474257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ba23b289f51b723bfd2e6b7655dc1cebab50f097d3cbc0f5ef13f418a87984. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZES92517674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa7830da066bd92448e8c581df57b81f0f4f6d0e83506b6b093666790874603. 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/QZES92517675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b23ce09d433ad141766e0bacb63a0608cd36e659a35be351e6f4627ea73280. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:09:52Z), 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/QZK6N2564521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423d0de49dcd4ebcbd046d03e17af68caf2bdd49cad5371e7a04007b00ffae43. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:23:24Z), 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/QZTB72568196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6165681c5a6da4c32fd66b3d51724a15a187c16d58ccfb594d4332f5e033e0bf. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:05:17Z), 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/QZTBD2551484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243df1f714264fe3a5c3e86f529a0029bfb679d112d90afe90864b2639554670. 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/QZTAZ2531556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5badfd6c544fe5995c9d992b45fe0ce6eca3891314ed5f1f4b263403941bde3a. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZWFV2505956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe452d81528bf20f2252e453bf6a5037d3b71ede1da89c1a7596247de849f1e6. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QT3F82563035.