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 0x0ea82223237ad95b3264baf106004805f240afcc7232e3eadce8cd9cfce25d56. 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/cb8d9cc2-7057-45cd-9914-4bca846cf513.json and https://artists.proofprofile.net/proofs/artist/cb8d9cc2-7057-45cd-9914-4bca846cf513.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 0x51490f5db246631b744ea42d2e6543a342f77027a2b83298c2790c544693000f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:20:46Z), 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/QZK6M2363017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51490f5db246631b744ea42d2e6543a342f77027a2b83298c2790c544693000f. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZK6M2363017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4816ac82bfdf8de86ed3b7bf6e958363e32c4a80d455f3619d1f9d6fd366fb59. 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/QZK6M2363018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dacbd33348aa4c027db35153c33cd795ac2b86e687a953baf10cbc61c7b972a. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:31:30Z), 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/QZK6J2392324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dacbd33348aa4c027db35153c33cd795ac2b86e687a953baf10cbc61c7b972a. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:48:38Z), 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/QZK6J2392324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078d84756ea32f5866532b626eab0676bf62e2edf3bfa0cf6311751b18f0d478. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZK6F2397310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c1a4695fb1a89f8f34c8487570536e1a567c302262683f9940e6297ec372c7. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZK6F2397311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb084ec60f92aeb7e0c2916072cab98bdc3cbdf1d802173b61eabf7d2c5b909c9. 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/QZK6F2397312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79aed8d150882bab116cde10f7ec6fd8207d8fa5c2e72ea5f9a88092a30a0b8c. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:21:40Z), 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/QZK6F2397313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77f0c183cf259b3e19cc9a096fd4b0cc4aabe43b760e6d3b552bc0e725e5e57. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:20:06Z), 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/QZK6F2397314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a426d7a7edaa82c5c886c5ca1f19bd6e0a87750cfc897170a5c06920bebb434. 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/QZK6F2397315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307104cbd26475f88a16edff970c7694a5813fd1039ec2599a5376817a3f717b. 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/QZNWS2326999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307104cbd26475f88a16edff970c7694a5813fd1039ec2599a5376817a3f717b. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZNWS2326999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a76c6ecd6860ed8b48fb10613387eac74c40173f358c6d04240f8d7214abd9. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZTAT2304504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf886a7fe86ece5ea4c8a98300f49076c62faa88512422bd4e21207ae904f27. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZTAT2304505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf886a7fe86ece5ea4c8a98300f49076c62faa88512422bd4e21207ae904f27. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/QZTAT2304505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db68507091115218b75bcb2d1a9be4514b46a7f34f1c5be81a56144cc8b7089. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZTAT2304506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851b73999362c8c48934939c84a2cd23a9f691655536e8a2eca86d852c09ac92. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZTAU2371631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b42d2cc57f383f452964c22a3d7295fa9a4f92a1e19be7fb0ab0545733e455b. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:03:45Z), 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/QZTB22317026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa1651cb7d1d0ba3b35a99732fcaa0b9f86d0c08ed6e87f1f2a278a1eb16eb1. 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/QZTBA2316048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a32bb2ea07e6c68aa64a26bfa5c0ae735154bf8c5728bd246e6d6aadf53aa8e. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZTBB2384835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2b26710da8874214241a7c350f844cede46717ab2f8aac359a59bfd607d28c. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZTBE2367610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2b26710da8874214241a7c350f844cede46717ab2f8aac359a59bfd607d28c. 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/QZTBE2367610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa262bde57b4291bc2402926e7028e45042697e9488573708996f2179e4819dc6. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:20:03Z), 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/QZWFN2355680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19491eb7078e9ac874ac8505c3ab560d894ae1bd11e7f9c413c4ebf529397714. 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/QZNWR2415170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x782c27495cde4ee719dce083a04ce7a790249a13145ad88a0ea80ebf130baacd. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZNWR2423240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19491eb7078e9ac874ac8505c3ab560d894ae1bd11e7f9c413c4ebf529397714. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZNWR2415170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeef302d3362fe8f5c37a8b95d7710ba3416065f4d012d627365d7fc5253519d. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/QZNWR2420619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x782c27495cde4ee719dce083a04ce7a790249a13145ad88a0ea80ebf130baacd. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZNWR2423240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeef302d3362fe8f5c37a8b95d7710ba3416065f4d012d627365d7fc5253519d. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZNWR2420619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb2c6aac626d54aeceaded15af8c312f9cccc631af4386531ae190aaeed9f38. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZNWS2427848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4c169d4baca45f2e71ca62ac62a391a426b5795cf73f2fd7f463d8c268b0b3. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZNWW2445380.