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 0xc453eea70ebec33e104f1d66b00c1dcb9ba7defbc1a6d5009df161a139718aa9. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/79e1743e-1e44-4aa1-878d-afe9aea47782.json and https://artists.proofprofile.net/proofs/artist/79e1743e-1e44-4aa1-878d-afe9aea47782.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 0x5902d901bd007a943812a84483b7e234db5a3f44cdf5f5156a6dbda41cbbedf2. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:33:58Z), 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/QZF8N2185891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700e6a1e02ee43efd72e6fc8fb735a2cc03e406eae826202ff2d5f501be2d18a. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZNWS2324711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40dffc14094f2c599dcfacec99ee9c18383d0bce18088289a0eb44b4cbdf4dae. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZWFG2325472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad13ee16eb7add7cc6bba9c78b1d6ffa3273c9b22879193fe32847a1f98d8c01. 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/QZHN52497453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15825c83918659dcc28e08299986636254db650b37cf99708007b894a49b95d. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QZHN62401997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60fce4e242ba734de3b92f23752935ffffbc2bf8744444509a224d09c01a88e5. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/QZNWT2468325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cdd99739902db06e47d63df61ea4d2c714c253398ef02863149b08534463ebf. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/QZTAT2441424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949f58a0cf292e6fadbff4145722cb1dd7742432578a1de37890c898f477ca3b. 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/QZTB72406500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700e6a1e02ee43efd72e6fc8fb735a2cc03e406eae826202ff2d5f501be2d18a. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/QZNWS2324711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab64463f64222fbed4995aeba0d3eb063b070f409b923af380b839b9b3444ce5. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QZWFG2473026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cdd99739902db06e47d63df61ea4d2c714c253398ef02863149b08534463ebf. 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/QZTAT2441424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd968cbf7666e903df3813a2b620cd8aba4032f9c8ca477a3e9070021870a28ca. 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/QZWFG2473030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad66f3fcf56b298ab8a4658c6f0425978aa88c9d3c8f27af8ce02851df33e86e. 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/QZWFX2464630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcbe274083eda6e8479a7fa4c186b9778fe86cad47ee87bd9ae1cfb57d1fe5ab. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/CH7819577258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4bb23d0a23da787a34b55a7d83f9855fcf97451d4015a0bb2c7c41dd085dcdf. 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/QT3EZ2467861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8322a1b2659d5e28bda2c1e937d0c4843002f96a2c4870ecb38060217bd7fec. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:40:52Z), 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/QT3F32457986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa90c151bc7343e85491140eea85be5d13ab3cab8b8d5cf58229287b194b8f6. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:37:22Z), 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/QT3F32457991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f78f90396dbb1a26d1e6c390afb416abf0c98464872569696a70ce381ce9699. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZHN32593415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6c81a26535dc332a050ed47dfd02e6b47a130ae56e726ca1181deaf9029d1e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CH7819577599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05215cf696505440cc5f45bca2260c6b63b42c8002104c1ba474775d24953318. 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/CH7812531028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd82273bc2d5e4a166cc1c7add3a4c1a665f1824711f252e117c15e77adba85c. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZNWZ2552008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a9b124aac91b72cb7ca4768d62cc1262bf273feeeae85213bfa8bcff9c9147. 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/CH7819577310.