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 0x97f9f81ef20ee66be0388d62585ee1e2d6346cc6e9df3b465aee15cd1e0f5752. 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/762813f1-0124-4f61-adb1-d0958c619c73.json and https://artists.proofprofile.net/proofs/artist/762813f1-0124-4f61-adb1-d0958c619c73.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 0x723c0f0746c4219e5329afa9c472a2315bb2f3954d0238613e0d4b9b7d0b2d60. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:28:05Z), 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/QZ93L2042062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf30de284b412bf516a88f085bd5ac70e29f73f55fbf5f38de40dac88b364927. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QZ93L2108116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb860ca3adb622aa927110b9c51ff1323949faaad5e96937e3161bcaafb8e88fe. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZ93L2127627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0f674e1280607e546938e860de5c36b8bc87b345dc54055727f937d0c36fdf. 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/QM4TW2244968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15f947bdc9080db62c590adc31d20c7b6a0b3789a3b9a528f8536bc8cd830d7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USDA12210398.
Life's Not A Novel (but I sure want it to be)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22b604e0094cc5bce7390b207bc341d05d0718c9371e6d814c17c53e96bb98f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USDA12317344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6176744022fd72cf43257eef2291a0421c26d3b426816fdcc1e598b44736c220. 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/USDA12415893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d523bd07dede2dfb71be3557ff7dd1332b63b493759625b9f2c76c975b1bf0a. 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/USDA12415892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3808fd23c582785cc85772cc0dabdb52287b3fc34941976b5eaada4ee240c9e. 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/USDA12417723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168cde24c26c11697170989fe79566fcd9fb7a1cc310e2734373656ad74818fc. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/USDA12419109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305b9bd2cdb473da4c3fd83b1ab576149d09e608c49aa83e2d43a1ba033e88f7. 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/USLZJ2565544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9a9171e987a12aa037528eac2cf6e0ed94702049e0e892a01197902349c2b3. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-21T08:43:15Z), 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/QZTRX2589093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x783d392705f8abbd87dccfb463f75cf65ac72c54de4ac7c6dcb6713bebb87893. 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/QZWDE2559854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df660b6142a7f20139155a8463591091566792df0164a45e7b91cc7d02ed217. 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/QZZ8A2557814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de8ad88620258d95814d576782fa8dd84acb9d09dd16d1508f6168182aa1d80. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZK6J2233438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de8ad88620258d95814d576782fa8dd84acb9d09dd16d1508f6168182aa1d80. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZK6J2233438.