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 0x484b51d3ea335a1222bdaa5c618d423a3c6211ca14c4d12daebaad063911b76a. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6ad64b86-9f6e-44b7-9076-3a088953b4c8.json and https://artists.proofprofile.net/proofs/artist/6ad64b86-9f6e-44b7-9076-3a088953b4c8.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 0xc393821a55e0ebfe465f1a09d8a6fcd76f6290baebcdc50147fbd8744ad8e4de. 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/QMDA62222898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c1f2341b2afdf19c16487a816b6378ee083935d252ae763eefb31032b3115e. 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/QMDA62222903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc723ae924c8008a18c0aae9dd6b49bdbc66be135e828a3b8762336e95522f1ad. 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/QMDA62222900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd05547d7ca94fdc533dce33a0a2cbade34a1c1dcfafb90a309e631a03bb9b3b. 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/QMDA62222904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5092a8f4b4d23982120ff1c5e38febb7cbdef62e4a717df341a94f4fdd3646b1. 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/QMDA62222899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1420e6a2c27c57ac5d0eed9759357e7316e8a932e74319c089d813d9f63418bb. 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/QMDA62222906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95d1317811fde00158aae2f6147785654432eec707e7418b751ca4d7070b0f9. 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/DKK1N2400601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b1f459b8f0bd5cfd7497aed05bf952519e2e9a24bfd7abb56c3e56c750e467. 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/QMFMG2339435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b5339b1e58d1ea6891285e497e554621122c0948371efa1135ae16721eda72. 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/QM6P42397352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72670e5689e20d3836eb3420639b0d16923c3a9faeeecbb63655b0e06ad13a0e. 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/QMFMG2339437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d93f7dc6f221563c9381b2d37f33fb0c8103f36eb2cd992d65b36043fe630b8. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QMFME2366105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b5339b1e58d1ea6891285e497e554621122c0948371efa1135ae16721eda72. 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/QM6P42397352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9caf5155946cd827d295e3cd0c95a2443c83cc8790672a97e243f2fe5b919ab5. 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/QM6P42397353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c807d2085665a29a3e38a18d59bb2e460c2c10b34949fb11e01254987240e25. 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/QM6N22262044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9222f6067affae3f5ab152c3d3c2f7413bdf705ad12caf53c162dc66d3a0fc7. 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/QMFME2178415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7827d9a40992fcbe92ee3938a14e838276aa334917834290c4d6434a5032e71. 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/QM6P42101131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ed4a233b144cb21c6584753e3259926eca2290063ef23db779a0c470148887. 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/QM6MZ2179697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b37a1a088635e278493a5d037a0626c50be93e9776ef41fed66d812de8c723. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZNWW2406499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11df74e37d4b64d0456d53cc1420442c5574b8596fafeda61dcb49b2010f0ef. 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/QZK6P2471524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c566e8cbbf5de5a0d6edb875ae3c94e7189508b1a63692a1fe1c3e63939099. 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/QMDA72132643.