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 0x39b40c9f2a39e7bac733e1360c4436fe203b03990e8eef1e5ed55e7e19092916. 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/b3a18218-ad54-455d-86fa-c21c02e59645.json and https://artists.proofprofile.net/proofs/artist/b3a18218-ad54-455d-86fa-c21c02e59645.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 0xcac04191bfe3421afe7f8bf44d83bdd663e6b037083f80167f251a7e9dd4e470. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/GXBAV2477247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1accfe4ec74ebd8f59bfa9278f67b4e9820e208d2017ba3782b080c11cb119de. 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/SGB502466035.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d4c1a0268be935471605fb89edf96f64470498c1f403ae6e0e93a3b151a777. 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/GXD7V2366252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636a78819f7804aae2137a9330fb45458654c76b06ef32176c4c6e9c1fedbc07. 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/AEA3A2458977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fadbbccef5152852a6b4da9d74911020b060c96f249445b70d02f2e433ed99f. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:35:02Z), 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/GXD7G2201149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628bb14e9b046aca76970625f250825823c893cd48b3a22a4c5bfc10a035f437. 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/GXD7G2532071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba59a7e760bd24190fcb26d55d5e3102965bc3a83c07f830bf65d208cc110e1. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/AEA3A2161892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12902a415310a61e97b434d07f07c1162b9d5fc585d50491deec1faf6c8e9a9. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:55:39Z), 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/GXBAV2178639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f6aba1b242b2866e4c7fa726efd03ac4253878f5f9e6cb8a91ea8644a82d24. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QT5M22569326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2229d4b178833f9985f3d68afe9cad3d2e55a78ca1212f218fc503a1185f419. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QT5M32595243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d960e80a96bf4d7cefad88e31eae79530fff63f0d2cf24611df728ce63a1bd. 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/QT5M42562260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5ad682b91ceec447e1c8780d9e2f45e62028a4af9f7871a58b3df9c14cf809. 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/GXD7G2553261.