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 0x7d6f504ed306f3a4a2b137cb36a18167880222fd292cca0fc6cb12732affea74. 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/d5b55003-e463-4994-a96e-ceab3421e6f0.json and https://artists.proofprofile.net/proofs/artist/d5b55003-e463-4994-a96e-ceab3421e6f0.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 0x318e5e3d89e358a67e6bf15cb0fd600cacc8019d31d401f90f2ca3a29c02d03a. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZPEW2459959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba663c5d87d5eec5235eea0f8d87a3c27bcda68da5811af7ea318e4c7cfbcf95. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:52:41Z), 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/QZVEM1813552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500b7f8c8f9b2d881684736e1558a5c85c3ba1b747b5f1ddf6c202049d899f84. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZVEM1813554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f57bbae66c01c04ed772cd33e44843541ab61861060a67175fbaa8fafb9bc1. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:51:22Z), 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/QZVEM1813558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c82240deef830c3882fbf56b42ef42fb05572d1681a3cd51f453a8c929c50f. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:06:47Z), 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/QZVEM1833735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7bcecc8ef1d9226eee67ff128bad1e8293b1b7b1dcce4a97c783431d532458a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZVEM1833741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50678ab14bd972501dda74fdfe7541febdc94f6226bab7e12cc8a5185a52f906. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/TLVEM2421672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d55cb9df198944bcbdb9fa335b4ddc24bf37c7687d41e6d5ddd7fd86e3a5ce4. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QZVEM2542538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab48ecd23ae7bafdeb43655ab7f2e704408ad311568583ace3c83f060fbe1039. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/GBLFP2505512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0bf45bfa9fd534dc458664c47840d157301459df2085050bb17279511460cb. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZVEM1813553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500b7f8c8f9b2d881684736e1558a5c85c3ba1b747b5f1ddf6c202049d899f84. 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/QZVEM1813554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c3200bd73c451dd7d9723036f50f8bbb0b0142c0a5353c931a58acdd503618. 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/QZVEM1813556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901ba606477606b2be6904525db3774918088a516867b78d2c23bf286850aeb2. 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/QZVEM1813557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f57bbae66c01c04ed772cd33e44843541ab61861060a67175fbaa8fafb9bc1. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZVEM1813558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e40b75429ff8659e104b63ef9194eb5179ea6673cc806a010d60449a49033e. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZVEM1813559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3e2824acb670fc560cca87cbe57e3e103b477a301cdf6a5f38541a231fc79d. 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/QZVEM1813560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcafbe68ba2728bdf9306b17e0c459afe20a20712d66e9ea3bf6e78ce50ff8e93. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:21:21Z), 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/QZVEM1813561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f71b7af6c196f1b2790825547b06d68e9b2ff55a6709f2b2ee5ea4d346c45f9. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:34:54Z), 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/QZPEW2583177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a249fe0119f8fb24e1ee7b979674251a18df7c6e6ada793aca96e5e46691ed7. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:16:45Z), 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/QZPEW2583178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d91334dcab3e018dbe41faafde0666d2a40a19321438875c313671425809d3f. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZPEW2583181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60967a7d6711641b4b6f35b18b17ba4ef3eefc6b825c517ffa1f317ba24b7fb2. 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/GX3Q92502791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd9e5b78e23c2eb6429a3003551026582982eec720755faf87f4ad0fa1b641a. 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/GX3Q92502725.