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 0xb59507b8a5daf4dd32509b3ea2d164cd7654d3bbe6099eadc561904fd2d8571c. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de214bc6-6fad-4f6e-a397-0cad8f535019.json and https://artists.proofprofile.net/proofs/artist/de214bc6-6fad-4f6e-a397-0cad8f535019.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 0x0b67fc54bca1cec6b0618e0b965d98e7575ef08e716e8dc2a128079b0908f49d. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USA2P2314660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe16ce28ae97c83cfc306294fdcb0e774d72a007233fe14b59cf3a18d41e4425. 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/USA2P2314652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d031e02f4bcbff22cf218ca6e5d89cbf7dbfdc8d6e31959c504173f8a6fc0e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:16:51Z), 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/USA2P2314658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377e21ef20d8d435b178a2c1bd65381d6e0d68e4c9c5334971646ea6b837dac5. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:21:05Z), 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/USA2P2314654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2113b32a1f3d885d0b2d5c62a2c86424a04e4bbbafe8703cbe0ec5c9c049f47d. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:22:23Z), 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/USA2P2314657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36dfb991137b8fdc6e534fcedeab05c1f22c0d78e1ac45b9f2f4db2a1b0dac7. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:38:47Z), 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/USA2P2314655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4ab1e361432ebda884c41483e95e45ee9b752adea7487c98d686b60508a39e. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:24:09Z), 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/USA2P2317907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d66bc0cec4479b9350acd777f42a2654c72867cd744401b96bfef481ff4d4a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USA2P2317904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a218f251995d5d7bc4ac59c348745724cab27097db5a35b2a5a0cabeed1038. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T10:13:36Z), 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/USA2P2317910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6a8cae5116ce8432504561c4948c231b5a34be022d0500225abcb3fa9cb746. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USA2P2317908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4137e2bc96aff83cb94ae8c3d21c2b9f2f6866004183e20ca47e2e0d0bbd6a7b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USA2P2317911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeaf8987c75c5ac7971d7baafb14e2559707716dbfae1c6bf959b86ce86a2146. 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/USA2P2317913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7e888fc42dbb4e44d3169f99c42e28b5db117a5c70fee1d42dca5fc85d6f83. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/USA2P2317905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75b4eb18098de2a5fca90d5a7431aed5dd040633cda8f10d16acea8f890a027. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/USA2P2317912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab60d376f0c1f3d1dfda5fa333525eae3d577d19f32c87c242e8808c29329edd. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/USA2P2330595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8aa5809881af0e78e7ad30a2d4ef0341f3761f4acd398761e273915774e7f1. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USA2P2330597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13337711628778fea3499820081a366a9bf638ca2d4de7ddc7b7a78527e474d5. 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/USA2P2330589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb790e49257066893a1051dba9634c533256889defb6b0a8cafaf45244515b5ac. 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/USA2P2330590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1404ae378d9fd620800789ea82d33119a949890c871236ffc54476038bff3c42. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USA2P2330596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3947f26fa1d6b714f319b3f0e6412d0bad10225e8673493ca4a8b134f7513da4. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:24:11Z), 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/QZK6L2502880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba6d02e6adb650938d927fc1699f76e9357c156394fdef24257ce7e87387569. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/QZK6L2543670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094cc719bb9dde2e63fb15062a18f38dcbd7afcf0da2ff1c03133ec6e768ea87. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZK6K2523908.