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 0xcb161829f8d531c87bbae639f93a6436949c5b4eb7b1f08e9007c03c77eaa886. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ef50d8c7-a32d-4024-a526-9857de90bd94.json and https://artists.proofprofile.net/proofs/artist/ef50d8c7-a32d-4024-a526-9857de90bd94.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 0x0e797d01663aa6e67c66d656c521411cabdbf0d1168a17bec3a3bfb7f48cad9e. 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/FRX452270565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd926839f0c91f07247f65a04a7240bcf769230971e2d3dbbbae232e347bcf93. 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/QM6MZ2018821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04f4a12986abb4c3be149bb16b2f4073772d3c6a3880d15ea0db133ba32fb24. 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/QM4TW2023086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c107f4fb3deb4350e52a0f3946fe71a31ed5a3b8220048b885c1cad175dbf8. 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/QM6N22297820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16b717b9358e33c4145a91eeb4eebc24af974a738f0195232a3da09dfd7097b. 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/QM4TX1916546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177668a463dd6e3f8625bc97cea1753ed81b0f4ebf42e342e3009008154a7179. 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/QM7281898493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21400f5b8d641aa00cd11be02dfe2b23451bfe8552d01a29d5143ded864306f3. 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/GBLFP1758625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3165978dcb1953a53e951d1eff59842f249bce04029065a9a9a15ec65599a9b9. 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/GBLFP1752379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b4ef7cae530df1c526adb31803b8e6d3399c209b3a0942123eb692e7975895. 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/QMDA71867193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80857e4c6e8fdf827fbf08e44352c1e0696cb162257aa0caf43e8f8bf48bec0. 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/QMDA71867195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9d6e25fa2fbf9fbe52771aa1d2503315294306aa0eef638c7fc08c0b63433a. 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/QMDA71867194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b92c7c88f001b3c5d8c37cd9e93b86e9a3b3b829f19bdd359f21ae3818df925. 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/QMDA71867196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9cae8a84ff9962f1c2a61a795e08e1070f6766294905d3354b576e9b87dd88. 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/QMDA71867197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f50964e4c393173692074285b12647f4e2ac177506e63f00876321055551cf. 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/QMDA71867198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f33c3382cba07974c93e8e5001062e74d7434b78ac43b14fbbbc11f43aadd9b. 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/QZK6P1971826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a82da28dc0c843106ee80cafafdb8bf5be29db1f866a2a25397e9a901f9a65. 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/QZDA52115902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ea269f2be6a4cc8b9a76c02d0c775f0ea5c0e4fd829ac3b2bbedbe34c10c22. 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/QZDA62120550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f602539fddb7f00cecd2096677324a7c761149e20dba7266e1b8b532507462b. 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/QM4TX1926005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ff1a5e05709f35f70af84f4ded792f52bc91c22d1624d5db3d881d6ace3474. 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/QM4TX1925983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a35efdc5a51fcb301a353926a393482c4ea0980808b9afbd00e8abf04cb739. 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/QM4TX1925996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b746816eded9a4f6b2dfba2f399a2ed32a4ed5c26495a8443eab85875f5fd8. 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/QM4TX1926259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0cbbb1a14929e194ca2810da7e00a0a3874f1b97ec91658ecddc5cd1436f3f. 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/QM4TX1926938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8693e2cd703309bbe40e2fcc2a0abff9e6a1e55096f5e7b5e837150fda85fa1e. 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/QM4TW1928086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d75d6a029426734033bf78549cc9fd827d96ac30b07c093058116d70fea6594. 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/QM4TX1926948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00fbe2dbf0cb6aa1e16f39af1235de02f8a58e5d677db01bf476f964a68afe0a. 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/TCAGP2285278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae164b41166b1e5a71294bb6c5fc5909698f554b9f3d620810e16b4bea3ed9c9. 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/GBMA22012987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba82f6335c93fbd99aafb59847cc7ed3108d825cac15e877bf1778ff0659dd4. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/GBMA22012990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567c9e92722a879564f9c8450e6fc1a32b8acecbccc2275db8761b42b9a05e2b. 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/GBMA22012992.