1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x8754d7d8e20f12322df5350d7a3b04694597b45557f565b141f1db6b870a1def. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3cf1a06e-670c-422b-aa9c-7bafdc829290.json and https://artists.proofprofile.net/proofs/artist/3cf1a06e-670c-422b-aa9c-7bafdc829290.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 → block OTSBitcoinBlock must exist at that height 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 0xa8c72490b14c66465002841a521e69da0556c458e93d421cb7603960f8624b1e. 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/QZW9M2314361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa20b51411c51e690a2dcfd2d937dec07d394a1562bf55fdf017905730d8e5e. 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/QZW9M2314366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d67d75ee8ea2d6258367ad62d8f992a07c7503cd9e93b08d4a0c997214fec3. 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/QZW9M2314367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e11fe5ba32d40fc70186b9778369126ad4db14027fe248d146e6dac141e3543. 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/QZW9M2314369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1b66c5c729025351ec55e09a35b33ae19878f10575e07a0454ec2998275550. 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/QZW9M2314370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76af89fe17f621c4396761492ebe4d9ae7333abd63d46d3d8435ed99a851f585. 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/FRX762089950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744b3ce75f79ed2e1ba980b762e8e6007a941439b300100bc9fcbfa54f411e12. 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/FRX762089951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb83c837df291303693eb94f5bc5c547c3b35e15af3b20d9ec616cc1fea08b6. 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/FRX762089952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73859f1005aa24895eb4fe98bb94c64d99b85be7b77a5ab39a1b9dd1922f3e35. 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/FRX762089954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7a66b3354142138ccafb558b7848f5c85a7b774ef26c21d99dd0b117f116a4. 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/FRX762089955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a5fbc9f43ee9c7f516bf119f50a268aa8d30466d14d75867ff0b39fadf2f61. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/FRX762089956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe857f91f80c18e112d41f7dc98b203edc22df30db8a0faeeb144b5f7b763b9ad. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRX762089549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ab53ba3ec3fe9403e1bc749cc88a03ab66d2ebafbaa9ddf7c4abd9e1279e29. 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/FRX762089550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f0935f14fb2caeb0cdb71dd9b1ce5f279784444a6b2e8695bf3673b91cca0a. 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/FRX762089551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd0496372b4b6335911d0106fb73d65da7177dd1098c522f4e76d30c27ede2a. 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/FRX762089552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ebd30a28c01e9cd065c18c33b1103cebe1efc1739577fea6b6e0fc3d868d696. 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/FRX762089553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157c9056666b4ad96721cc9ec3ea45ba41594696576057dd626d126d58323715. 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/FRX762089554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f72b9e5efce9ec2e48c6ca3b259b14a9a74d61565841dfd280451474500039. 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/FRX762089555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa745f52159846f65f1a0ce2c79005aa87f37d04428d8afe5a82ae39d9a874587. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRX762089556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015546ee165987e76c465514f351a1076fcd177f4caa4298aa48bb8d2c5dc074. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/KEA9R2402549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4237edeee9a3e0a6bd8b981d298cbe2dd16d5a7abeea71093be53f71c05d301. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/DGA0L2454017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb7cd8f31554542bd125276981ee36dfebedb99a318be2311be1b5a39653ae5. 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/DGA0L2454006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58416b96e8cb312c09c55f593cdd6823e567def68cdfcb1cccf3f44ad70e16e9. 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/DGA0L2453988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068aa550aa957812a3ed2bab374b9b2a6c3b0c7bbc6accfdcadda40b21143aaa. 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/DEH742429385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40537d16d25e61dacd7aa55e2b04b56540598bbbeb391e089ef0739530fe5d8. 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/DEH742428859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24cc27f7ddc515f49fcb3a460aeec29e8a80f3b03b5f9a9f9f1b6b065a27ad2a. 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/DEH742426378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a999f4dd9c0b65c067ef1396ea50b0e8957fafb2fd402dc2496eeddff5a142b. 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/DEH742426395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40e1ee19575c26e857a8c73a4b2a97d2578f70f978390e7fd87da986c6361c2. 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/FRX282287016.