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 0xb2ee5dc3b62d8219e37560f35660344822d016ce6cc95df0ebfa9c24333971fa. 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/2b11dd9e-4ee7-47b2-a6f8-8811ce3bbfc0.json and https://artists.proofprofile.net/proofs/artist/2b11dd9e-4ee7-47b2-a6f8-8811ce3bbfc0.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 0x134f83c9f1ec40be758030c54fa273f3256d61001448ea4eeb60744dfd115fd4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHZ52122976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cfd871e9cf72524410cb9bd52edb65b03870d5175f796cea422998676111ebe. 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/QZNJZ2390872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41e0a47eea8b8d4017431f09aaea0b995d29275ab5e30a7780a4a1838b0d2f3. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZ5AB2459756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bebf8e57ff8a9cca645a208e7a8ecd12329bc85088a3b07e4672c17602f52c. 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/QZGLS2446433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87698f738860e41cc0921861dac39e021af93b5bbe43848f1e11180edd8f2dd. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNJW2466203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447e62d6620821c359c3a75e8b290ccd978edc68391c9cfff356f31cdeaf5495. 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/QZGLS2446411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cccd0faab536630831af8b7a3965108a3949bbb2769321ba4687b31cef82c10. 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/QZNJW2471416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee3ad3cf01603ce0d75beaca24c4a46e014aefdfed1745b0205fb2aa9c85300. 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/QZNJW2471417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e6d16f051997cad2956c0083c05e8281f44da84e30897acc53fcd1a795e997. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/QZHZ41978046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26660e6be2eca33262a18e3ffba89b5f2091d015eaef348013bb7d9f65dd4ba. 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/QZHZ41978047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555ad770ce7a673dae517f7bf32eae3ec9b86072c76ece5319dc4fc3afa974b0. 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/QZHZ41978048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6c1424727c940b8c314cfdb8d6e54663e7862275cf968ee69b3bf2e8151020. 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/QZHZ41972473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87698f738860e41cc0921861dac39e021af93b5bbe43848f1e11180edd8f2dd. 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/QZNJW2466203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f91bc45b6c97555677b8fef7b5d4ce1410bb56ff6b72ea43d8d927ff905dae. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZNJW2455112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bebf8e57ff8a9cca645a208e7a8ecd12329bc85088a3b07e4672c17602f52c. 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/QZGLS2446433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41e0a47eea8b8d4017431f09aaea0b995d29275ab5e30a7780a4a1838b0d2f3. 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/QZ5AB2459756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2515512f7b2c1e1b6b17e92e4d5d8c7686aa206662233c2edeed3f5130a289. 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/US7VG2452842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9d1dead134db006a0e972a31b7a3b3859bd60a8066ae65a8ba8f37d7c8bc38. 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/QZNJX2221655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc15cf5f19dc8dd597717ece9d8bd5c132a8750753cb3a9f81af2fdc79a9143. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZHZ32267011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392db1d474d54300d167904abf65ea5b6ae5eac9b0c7f80f01d8af834557b82c. 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/QZGLM2255978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18b26b18f3fd8e53a9340a5c25d2749537c39d137e90e0509fa6e653cd641c4. 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/ES71G2139300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b161806820ed477d8e63499321085285593fde2fc6a2234bffcd845aad6ee6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES71G2109991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311cb14cbf2e9879e3c6f60ec05fd3865c9a04d712e61156765ceac19d7841d1. 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/QZNJY2006642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bdbc7f0719b3f759db498da4cf344c4a2ff33dbf3afecb00cfd707cc2235cdd. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZMZ92048649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421717839e887783098b5202194ee9958abe1806cb743d2edfa07d778973c3ba. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZHZ62017915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041da778f98c0405c75eef5217b8dc6e24d33531dc46bcf5351597a34a81a443. 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/FR10S1971508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5b0cc846890afe21c86e0dacb589864c2db543448680eded67c390b6a5ad22. 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/QZTVM2232251.