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 0x16bdf6847da7179d6910b243ff58e836750196a235a1ef36045f6c656891bd51. 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/20aba0d1-0929-491d-9a13-7e79cf9edff2.json and https://artists.proofprofile.net/proofs/artist/20aba0d1-0929-491d-9a13-7e79cf9edff2.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 0x594952c8eaadac5506a849b163a3c47f5ca7a6d6eccd704482feec952b7380c8. 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/GX3HH2120640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71403a1baaeada11e48bf3505ee6302d9c1153b821571159cb8ba9cc56c4ca0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZ5FN2252476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2403d2b7a692e1e15bf434408cd786c497e3f0c5f6349c08177227337ea498f0. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/GBSMU0062228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b48e1faf2c54def1b5b2e53d4ac1d7245155b429597588abb426b101f3cbf5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GX4R52165228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be96fddb0d86ccd49a0e93d96a56beeabdefc91fb731c2108eab687bc8923f3. 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/GBSMU9833199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ac6e7c884b00b537728996af6c193eca38f05a814c30499118f591a99f4909. 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/GX38U2130543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9501ef84f24504744507b033b5719a13a29822013903233894f355b7bd6ea7. 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/GXBDS2327393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96dd7a4d2cc383c3c7368ffd991668d93c1bc55e941c2c0b77415585bb93a2a9. 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/GXBDS2339421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90609c99007c1ad6bb72fa1288a9d15244765a6a34daccb9bdfd5c90ed37265. 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/GX38U2325129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b37ad4c5dfba5c5df0a079eaae12eaaeb3fd8c056fca1073c3d130f7a34b98. 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/GX8LE2380709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26813ac6facd7f3d640a59695af638abfec452a13f457edfd0cbd5901c91a9c7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GX89G2241024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f73ab87710503da61dfa8a4d8a905615f0dbfead23e77ee6ef12ae2513c3f4. 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/GX5MY2264183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b0b83dddef3312cdf9a9dfb0148667f05d6fbeb25343d75a581d2bf6be9401. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GX3HH2166349.