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 0x9f56f1cbf4dac5cd68dbb3aca8ded684bddcda3a293024d56b032a2fa9606ef6. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b11316ca-62fb-4534-aae7-a2c45f1cd93d.json and https://artists.proofprofile.net/proofs/artist/b11316ca-62fb-4534-aae7-a2c45f1cd93d.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 0x67c13466064d4e705d069c25b3aa6be7796a7ee3de3f0d725c5d5babd825d30e. 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/CAENV2599805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41754b5c8ac02ac42058bb54d29ade5eb0046ebf1278b19aaaaf5412baa87766. 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/CAENV2599803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f00501d38b22ace5da6aeae659ceecaec8430bbf51211b37ff85a8b68ef209. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/CAENV2599798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8829ceebdf55f1e4f6f5ee5bf7e350dc65b6f46eca52fd9db51510963979c17. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/CAGOO2554805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e874ec95dc964daf901be5912513742b8adaa9c98d274da51b0b35c1bd627d4. 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/CAGOO2554808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ac1f772509177e78ea27aabdc7efa14b3d0f2b9b62f7c58a005b6c018ff9e1. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/CAGOO2554806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a5f29dfaceee2dbbf4995cbb4d745ac8037538459c0778864450a3968f39f8. 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/CAGOO2554807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c5f53d19ef0f347763ceac74ea7ba9ab39b2b90ca3daf554e43129f5a51d49. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/CAGOO2554809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48d1cd1ae245ab57f2bd7ae3e6c38deab3c6bc594c5670b4f583cbe8ce5419a. 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/CAGOO2554810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6f9dae6baf169ba440ba0e029b59b1f48a17e466ae350780cc18f8670ec0bd. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/CAGOO2554811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa3ef94673b86de6092b09518ff1b3561d1ec510f903159a8e53fe90b980f8f. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:33:24Z), 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/CAGOO2554812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290d784b9d1c540f699536e74f8b7cd5f89a0023ec603625e9b04b0f6ae25307. 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/CAGOO2554813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f94d0762a3e09e6eba857bc8b5d802fb42aa4ffe10c2069d43c18e3946f540. 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/CAGOO2554814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa349e23325c3da419ba3e425c2dccc81428dd6f457cf9953e1146ad7d4dfa38a. 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/CAGOO2554815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6acb711c8dd5d9621c7dc916d9100879fa68aa005d9620624227b7e965f90309. 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/CAGOO2554816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f64537ba5aed82b16a86310b7e194e98f0a12f09901d19187b51eaa5ac5bf5. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/CAGOO2554817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbea43e1f0e0fb4a5f7fa87a20fde1f5109ace8e0e21b433d6e839ed23048c6f. 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/CAGOO2554821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecfa0c1aef14db1bea6cc04977185696b732b488fbc27ed483ec2fd54e0233c7. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/CAGOO2554818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494c9d3e350660741e65202dbe2d5d50d46e98a205db7fcd17e910d658f2e572. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/CAGOO2554819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d27b694eb9cc8aa231bf15545c41b1f9cd7a17cd9d0cb9b3be606ec2c4dcdc3. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:02:58Z), 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/CAGOO2554820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe241e0fab589555c83ebaaf643125e5d9759a15f12214f484127700d2f01dd. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CAGOO2556002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba752b370d43f98b2163add090cdfbce829e9437f93666e6b02ca19c3ac9ed6. 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/CAGOO2556009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c14770dee958a260b359eda7461c4339756cece4656823b4298dafc598b404. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:10:00Z), 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/CAGOO2556006.