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 0xdeb1ff80e84794ed031302cbf63fb40e53a460142b5bf7fc74b37c495d7913e2. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/32759aeb-b482-402f-896a-64643c0930ae.json and https://artists.proofprofile.net/proofs/artist/32759aeb-b482-402f-896a-64643c0930ae.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 0x0fe0ff0a13ae95dfc8e983d23083e5dbe8f9919b3af587de4064bcb0bd9b12ff. 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/FRX762189284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5ef26584be2bd8363809ccd963ba5c67b4d8ebf6bd02e88f2a26529652139a. 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/QZHN72428763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf28b554def3d197b1985a19033423d92ce87bc4687159d4eb8d3385e022618. 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/QZMEM2371398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed17a8a10c8069ba29cfc23e6b89c06f1af62bf171cd6f88e1741bed4287402. 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/QZTAX2298117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d2c3cd587f008907abbb894f6f5336f3c70bec6c1eb6ca40a4bc64e2491b26. 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/QZDA82336592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae000793d1e89e569bc3575e9a1d459f0e7546e5381d136e4647f9912c06622. 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/QZFZ72309683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5830d26237122a824f8824720dd1b1ffd2df144a115326f0900f2a21978db8f1. 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/QZDA82336594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92180d99f977d51c5a796a67e3997ede513cf16f2d5b1a5a1c322a6e8acbb68. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZMEM2122191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330b2fd3fc01d4e0646c7eea96283be6e77e71905c85fdb1be8db4b77992207a. 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/QZNWS2118115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f5107c51fa2bd51a8f6cd09f0e9197b3d5dd4397b82b7b672ecd05fe36671d. 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/QZES72137117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1012ae312b5efed42c60fc2e653efd21e28493b81bf6140c92deefce228bfb67. 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/QZHN42121857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040593ef540236ea22c933206164069130d52f7396fb94a316bf25edd3f064d7. 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/QZTAS2461914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004040f25d62e4c483d12559113ce50dde06b6325c3607d26cced3eb5b31054e. 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/ITHUR2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc21b149da0965499ba5080bf2bf5dc057076c284640c12df24bac52700f67b. 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/QZTBE2314233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350d88d9f1ad4d4fabddbd1141398b3ebb74369cb33ac551886e8cacfcf23e35. 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/IT7DQ2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed17a8a10c8069ba29cfc23e6b89c06f1af62bf171cd6f88e1741bed4287402. 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/QZTAX2298117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08bf8d91090af11244f601cfc666f130cf3720707efdb859253376418f133f27. 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/IT2J82200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fbe47cf281fca4d6dbc6622b28843ec80b48a89705386fa16682ea63a326551. 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/IT2J82200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885e145a407333b808756df2305596e411c66da52f0977155532b62e9736b7a4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/IT2J82200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92180d99f977d51c5a796a67e3997ede513cf16f2d5b1a5a1c322a6e8acbb68. 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/QZMEM2122191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d05edca2a3d27531b4464307ef6cd0e1cc29b2506af6ceec72a1531f8f59a9. 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/IT7SU2310002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe0ff0a13ae95dfc8e983d23083e5dbe8f9919b3af587de4064bcb0bd9b12ff. 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/FRX762189284.