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 0x5b302fe64420b53e0fe950d4e8989295edd5470950bb393f01719a2d60b008c1. 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/c596d315-0f31-446e-86fc-d1baa55ea30a.json and https://artists.proofprofile.net/proofs/artist/c596d315-0f31-446e-86fc-d1baa55ea30a.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 0xb731cde4f39ede67469e8e20ad2e1f2c611e9cbd9551f926b6bb95eae4f9ee5f. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZHN82369362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175e5c3ecf38e749482e76c5b610d030e742eb7762c73f2fcdce7ab86b8bf251. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:05:12Z), 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/QZNWW2382385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942c719832229575dc43578ee53e067c3abf5cc2ebf7c74d4c1c630a49fa363b. 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/QZWFK2339131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf992b1f289c5f089905a20834b95c581f111cf58354f28c528e51d91f16af8e1. 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/QZWFP2383838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2397f5c884c321a329aeb8b93b7a9808006bcfce2d1e0c135ac996c24e4a432. 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/QZFZ42490884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c78bb4a69a5b900820419716982b6892bfbd07e7e8d3f1ae659267548fdd325. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZDA72421508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443b71cb2c199d162bdab3b989e0ec138a40ae66a4f3c9bb7a9dd03fb0929a68. 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/QZNMU2488226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c4a86bf34ef9e4f08220905bba02a7d84f4426375e1d83dd13e060e0e5ebb6. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZNMV2454500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8a89d24d8853f66f8c34027d7e85c8020dc584a93f976afa02714052d520c4. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZS7J2490546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b43753f4ecb1355d9fb9cd364366df01347636c3980b676e612eb507059cc99. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:54:18Z), 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/QZTLA2585050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb54d762581f10a8e2fe1b93bcd0b7fd101aa51004b26d70b4f9c4529d6f1b2c. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZTLA2592152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e37a46c980b2fc8fcbf578398e71a6eef35708ace72a0ce73bb3494248b4e2d. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZS7J2534626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb4cd2c3adb1bdf4624944af4de3b68c51e2a581e8d851f768a756f787fc0ac. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNB82547633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6ea27a62d23690310b6422a74a1184ff57c7b912546dc0661eb862cab38b4b. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZNB82560097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578a36ad64ec0157c60a3d3c2bd40c2e4d9b6d1a4ae0ee67c1a0e861d035ab13. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:28:32Z), 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/QZTLA2514359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d66e7ea2ee8f77b68ab45d07f1908242ab5eb2780243c0e8af49885c5bd7ec. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/QM24S2402044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d66e7ea2ee8f77b68ab45d07f1908242ab5eb2780243c0e8af49885c5bd7ec. 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/QM24S2402044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88973b7446dcb672a5f50f0a623917e6e03d0ca7d8e69a677cfe1ef877d15264. 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/QZQAY2486772.