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 0x829746b3c4ff82ccf85c9a56836a0b5034533b648ff230576c4305bd27d88e01. 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/b4d82726-d46a-4789-9f42-276f6815506f.json and https://artists.proofprofile.net/proofs/artist/b4d82726-d46a-4789-9f42-276f6815506f.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 0xaee5544040d0c6b017964ced8847ef4941efd360f43a90da7f7a5c5260723395. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:11:08Z), 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/SGB502217791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33d538a6a7351543e17c67fc55f22cf899edcd40336bb99c37c31f04f4b4386. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/SGB502214970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d6d25d9e8bc480e009fb192ccc5a446188268371e40797cdf993b0417a96aa. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SGB502214706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b2b561558c96c8081c5398955b0e441386ffb27c1c08d52e8e3e9430c1276d. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/SGB502215991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbde3cdd86bf8c8ad592717c9f6edb4cddcad68fa0e4c05607b5e1e98092b5f6. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/SGB502259209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8477eda2e3b1fd97e55617ab2d8a9bf93f222cb070c8532bd0982c7f7647a55b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SGW502324084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396f01c2dd2cbd86beb7960dbef6423af9a651bef2c2450e84c795b576a0ae30. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GXBAV2379073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549adaa559ecfdd15ba5ea555127228fd62823eb163729fa68e58c3016eb1225. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GXBAV2380442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09c72d5a4645cdfc01bd8fefe24d1bfb4ed46dccb290e6cb703bab01aa1b9ae. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/GXD7G2482982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5cfc5671fa1b1277c3d11f85602fb7a14fa92cf7bc338896fb0de3ae49eee1. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/GXD7G2336061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a90cf13d3ac80af9149217433a7323860fe3ea82997ecbee95f7805b6fad07e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/AEA3A2421545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48a897a6061d2ea70444db855982f01cc1dc049e13187dbd8250035fecc8999. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/GXD7G2291503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252926eb793ad4b732792d61a6df4cc3f362e68318116ef1b1e33044841d8ecc. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:54:17Z), 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/GXD7G2283435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81124e9a992109fc302fec47548911a87e220545e02f7c3782aa6fccd1a16d59. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:21:19Z), 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/GXD7G2203810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833093b770aacf32cca8663a01823dce3710e4bf193740f1019bb8b8f52aff37. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/GXD7G2232010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a397b40123e46f989d1724b524d7db4a22619e3113dc567dee3596a0c8f066. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GXD7G2278032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f4a35da29d151288a30c6b05a4d86557a085bb1e3c26d92bbc83cecf70a525. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/AEA3A2223786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e9456c0db3bdf6b09315e352380ee0a548f9c19feafa4a1d3731f30c6654fd. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/AEA3A2259874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7874de5c28f367475ab198f220250c411b3e44c96251e0d70ebe830f2a5c5d6. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZW9L2459996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609651ad6c39225c7b7eb2a67ef0f57ed1d0c613408495e0d0a809ecfd355bea. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZW9M2400264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3bc4761e581bed53a5c7422dc0634db1f163ad6fbeeef08a4ed632bcc733e6. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SGB502596986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0731e47f76546efe97c187b45ace8936c0e734b8634937e76b654c90b827741. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/US7VG2573789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd111803626821aa22d7af167a640d6fcf6c68adffa820ef66437a5b61fe3f181. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GXD7V2504398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed3628be128191d212d851c64551217b27f3c48b46dee9910c83a76d9879b90. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:37:52Z), 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/AEA3A2501492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9656126e48e051ac3cfcc5e8f3e9f542b1869375108284873e41ecf37b061904. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/AEA3A2503725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2497c3a15af9948f8940761847eca8e4b8dbb7bcd1d0f2ee9f948ba40e0f86d0. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:19:24Z), 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/QT5M22567046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0d6c1273400b83d07ec4b172c0c6da4a9e2142900c3d107cbaa73f19270d45. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QT5M62531855.