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 0x1d8aea3fa6c3240beef0bfff6f53ed3a19bdc98cdbe6ab87b2615d6172b05bd4. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c8941ec7-3f7d-4c9a-a779-9fa9e94096c5.json and https://artists.proofprofile.net/proofs/artist/c8941ec7-3f7d-4c9a-a779-9fa9e94096c5.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 0x2e38d0d0cd968c5a612c166e7c770f1c4b7f5b92ad455e753e1bd756db32722d. 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/GBLV62308615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e92a493e94d46938844c8711c98ad6aae016146c0a47bd62440a117716afd2. 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/QMFME2307945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5428c30683e1ce7c3aafb3072c1fde353059e3514ae2813a6318c97d5bad7a. 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/GBJX32364206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2ec7fe41c209ee915c8ddb0cf4afd6d679e33d5bca596609e89cb8b94b9cdd. 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/GBKQU2247312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45cb4796029e27b997bec09333c5ea8ea68464aeadb212df5ab31dbf1ba1769. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBKQU2247313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded3e50fbea81f8fb7534fbfa04f4ace976a29f3b524841f649901ead098ccd8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITA061302131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fed095826d2b8ea15f521a14f30debe73d3b0018affac513eae83d86dffae1f. 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/ITA061302133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa339f6abf610d31cb434586b0454a525e2bbb5261660f34547952427727fed6b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBKQU2141451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53a75e8c46c5360f4df71a2765476e1dccbc881feb51f264436bb62531da573. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/GBKQU2141452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6c0336eb0d82f850f88103f47c8f046f0bc3270c53e9767721fb9dd6d6c543. 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/GBKQU2141453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ade28462dd3676fc30ede1491bf94f8f210e82c8b98958ac7484fec385783c7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBKQU2255500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0aed9151bcd44c88464f34efcd5ae0013008d2829ec42eceda4a158ab28e56. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBKQU2255502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64581eee1417a3eae470d84407011e7d82250b8b2d40960b954efba8ec357dd4. 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/GBKQU2255503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104fd84fe586520e0191afd867f377520bbb1c3ce4127e4b19eec1449ddcddb1. 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/GBKQU2255504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e38d0d0cd968c5a612c166e7c770f1c4b7f5b92ad455e753e1bd756db32722d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBLV62308615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085b1b16c49763300e0d3aa8f0754a18b21e4c9e375933f5fa6f81369bf78f9b. 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/GBLV62308616.
Weapons of Choice - Underground Sounds, Vol. 16
Nothing But... Deep & Minimal Essentials, Vol. 05