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 0x4a76957f683952974f3410510dcc80aa36532d08a338d6340d0d2c8edc5fd7af. 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/70d68405-cfb4-4e30-9984-8195ecd3d0ee.json and https://artists.proofprofile.net/proofs/artist/70d68405-cfb4-4e30-9984-8195ecd3d0ee.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 0xababcbb6762d192267e625b92b75a37617fed81c66b770b58e1ef7b6386d1488. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DENQ82000156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3614ae4c39583cde4f81cc53474e0763d879cedca321e431bea8ac3278ff2447. 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/DENQ82000157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7ffb284505bb6a4b4e1ec8a093a84ce64cefaf95463212aa7955f8345a27ac. 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/DENQ82000159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af05f9be5afcd7cff513f3bbd81e46e2700714495fb9f94842e3932996d64c5. 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/DENQ82000160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62da7b90aec16d86b54d4725423d16bc3d1bea08324b86d5de8df584ae0f12c7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DENQ82000162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4286dc9366db8260704af8b18a45efadd8d1f0ce9c2c4f66399ddd20d23cbf. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEZC62160011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d5d680a245f947c25d49ff762fd23a925a6eda0b608d36171144281d75ebe0. 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/DENQ82000164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449a2c98013ce52d0cabacd49e9082cfa545e6b3f6e8bc187ce56984b35121cc. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DENQ82000165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4906295a4287edf000cb71e6cd3f25c258355bf7be8e33ee6f8292077e9e36. 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/DENQ82000169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e5219cd362e53bba7ed27010ebf9c4100e2b7b8ef663704fad967d25baa586. 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/DEWR72400125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eeccb9d10f03b2d19af333ed7de3c0e07b66ba9778c3b43f45fca93cb11e342. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEWR72500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca6e1dce5bc6b8e4ae54ae296e39b336cfe27977e5412a9e78854774ab54b4d. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DEWR72500023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccce0655cdee5527ffb9ede23fb799ea1c6b721ac9006b6c2f6c3d1bc2d5fa28. 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/DEWR72500032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f5cb225bfcebf058f45b959b7fc8534afad6151d55fa927682029eb90b3302. 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/DE1IK2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103a4b686c8c3904359ab79c8f052bc570e82245156baa02e97ce8a3439d68bd. 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/DE1IK2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8613f58db812c3584c0593061f8f1f72d9cadfcba755fce622042583b1b099. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DE1IK2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbddef42c3b24db2327d4f4669bbf3fe09931486eff96c4d3eb26a6069832b736. 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/DE1IK2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f8581faabac483b6a2e3ece9d6551922cae0a16cd941e58684b2e6553825c4. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DE1IK2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3fc1ccfd3f49fe0f37b616db1281e97576716e4c65b5d7d75226c4055574e3. 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/DE1IK2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424b298bafdea39acd9899ac3f275e89ab87b0ad1c599361ad78eed485d99879. 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/DE1IK2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ada2f89aa11d69242a1aeb0de26a05ba264c872bd7add15ccf33ba7ec2a70a. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/DE1IK2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4509729e8c6d0d0870e5a5554907ae0788b36b8792558955b7a02df784f135. 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/DE1IK2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec0e11ec94bd9d72f890f6f953ab5f145c15f2c9c7d2aa332fcd8318d4ef3d1. 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/DE1IK2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbddef42c3b24db2327d4f4669bbf3fe09931486eff96c4d3eb26a6069832b736. 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/DE1IK2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3fc1ccfd3f49fe0f37b616db1281e97576716e4c65b5d7d75226c4055574e3. 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/DE1IK2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4509729e8c6d0d0870e5a5554907ae0788b36b8792558955b7a02df784f135. 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/DE1IK2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f4dd35906734642b54170f3002f5f45754b852928694b3415cd5680ce5ab48. 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/DEBR52000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e24454f6b33a88e1937d90ad1973627a359aaf076fdca94cff9b369b176a7cf. 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/DEGQ11800050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc99d8d984b5dfb2debf1a7f44085f8735fea96c767880ea200901684882270. 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/DEGQ12100128.