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 0x653f516e5b1683fb818e134661c767f16cff13a4978f9e383f6e3f0bb3d58ace. 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/93e3f611-bcbc-4645-b970-5cfeab595c31.json and https://artists.proofprofile.net/proofs/artist/93e3f611-bcbc-4645-b970-5cfeab595c31.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 0xe9c7ac4cdc57644dda35c1c6a0dfb0692bf4d9013f41b9f3fb6bf89c50669eec. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QM24S1831468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfddda51754d05a60b60999d8429edb46bb7eb2882577a0a65537c41fb6910f1c. 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/QM24S1900315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf377177e3536665fc280cd751ee580f2524f0023f4a91cbc59f11afa49d51b11. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM24S1924845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e616a013dbce3c6fa5a7cfbf2736769b285c8d685879f0a425ea18516b56e0. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:09:50Z), 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/QZK6Q1935325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac0281579824f38ffaf6c5183520a53134416f2b111fa8f06fbc3d51e9bb48f. 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/QZFZ52005827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b341d3b361395585ca5dc0ce385a75328f3a94cac1dd011229a3d19f469488. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QM24S2008017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6b8669d2edd0bda91c41b8f529d403a1fde0f7b5f6a0cb9be1b70e671e5a2e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QMFMF2010908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6166efc9776eba2fbb768fc04394b4d11c1f6d45f30f547ce098af82f51c1ad3. 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/QZDA42177108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d0f4cc40c9501169aa98af64d7025d37301a45e83f229480e597be390b1c28. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/QZTAS2188153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2277d94ba72821ba3b8e093f7c08aba32e1efeec99c5b8c281ff68bc20f303f2. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QM4TW2260828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae38c08892ff44a4d7a8e8fabfe18e7df35bd8ce66b92ba9af0d7dc5385986b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZDA52235827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2527ef7836034de5687b2748e444fdc03b5ef88989157467404972dd98ede2f. 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/QM4TX2282856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec7f665714ee333340337a57376c23788561a006ead34a7088576503205785c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZHNC2252380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c31c74fca1635f6c66a526beeb41efdddc6730d57453d6069cbf8649152acd. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:44:53Z), 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/QZK6L2286188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b74fb0bcc8cce7c88a574eb72ccfe4589c3c3b0b299eb3e0d31bd7e2c02882b. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:15:44Z), 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/QZMEM2257336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554820517012294c5752f2a4121f2ba0786f85f1c045bf1860176e44d2d1e415. 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/QMBZ92248518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b3af3ded6d04fb1405edcdf8372d58bdfe6255266a0cb8af09e7e0713785c88. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZTAS2205521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1b75752f16f21b4bb62465208f718fc472559ff09cf3fc00e559ae467a54a4. 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/UKZGC2303700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c676a3054716c7900902d370ea50bf78d78a36bda25b2f3e2ca28c9de4be8c. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:29:19Z), 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/UKZGC2408309.