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 0x06b7a00062c54a7c4276768dbce49f148c3c0d9de9e82c245105ed24f7153647. 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/50fade97-6f8f-449d-a1f2-07f53d3880a4.json and https://artists.proofprofile.net/proofs/artist/50fade97-6f8f-449d-a1f2-07f53d3880a4.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 0xee5fe97818f02b78d313909a0417622d0b3877afb9274578af50d6cf2610e751. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZ9Y21725037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6350a5f9027139ab3f30e3bc2d1e6fad0a2f143e866793a33792cc3ded98bd6a. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QZ9Y21725038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d280c5ecf957e277959519bd1a5cd9fc04c3e9a1a75b09614daac9e42f297f. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZ9Y21725040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50fc7a2d616473f1a32c1219b444a2e843fe89480428ae04ee7a63dead53bf58. 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/QZ9Y21725042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eafc72698b820af51fb04f8022e2b22024c6a44533c22f4c5c86b589e6472f6. 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/QZDA51878920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31fe5062079efad6769a3ec604bb02c673cd19bfdf42c82564e88d96a7c9e165. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:35:23Z), 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/QZDA51878922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e886b7f83a85fc9f3ba17ec5e1452b2bb87ba2ae8a94e32d3f2409c9fa74d5. Chain 2 (Bitcoin): anchored in block 958731 (2026-07-19T12:35:36Z), 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/QZDA51878923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c7faf9f8ac9a00d45d9e92b02a94a5fbf998646b88029b010f61b350718922. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USA2U2100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b6582df218b9fc818d2fea99403da922c9b2ae31e7cf1e9463c83726c45511. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USA2U2100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de688bf35286d65be3a5496f2f194ccc27f41e00507b76fb28a83e73b4f63f7. 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/QZES62126654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae62398edca87008c5382d0110009a2425a1ee6ed0390f33f2389c5970d6096. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:08:38Z), 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/QZNWZ2079451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda3cc5ff9a1863db9636371cd76df5337497aca27cf074893fc836ca6584fff. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QZDA72122877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9655002d7954e77438358f1f7037adf649fe3f5f6a1511c1cc05d4abd346a0. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/USA2U2100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfffd15b2b77fc0ba773194b0d31c6edfae10cb96a62a8924750384ff3cd2fc90. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USA2U2100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51723ec36436803dc80d44ca227e1764b9a3134325033a73a301a4c22dcdb089. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/USA2U2100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d1f31275b9112dd7f7facf1cab92e3e6dcbebe6acc9cd53cb5762304f9f5c3. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/USA2U2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40cf6ac98a5a565b737c0a4ca60148c7e69531d101f4fef1e50a08297810fec. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USA2U2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94427dec39417c2d13047a4eda2b55dcaffe0fe9eccda2cab541860e2202ad1. 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/USA2U2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40fc650ce33422fed7a994952f1075303b7a831b8805f22d806fb9d3ef21564b. 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/USA2U2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897a7559e2c011ee7620a184bcad28b48533e943db102a5c43dbd354d7c1cf7d. 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/USA2U2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3764476733de06b3cb88cfbd0ce17697a60cc0e78c76768313ab519624b427fc. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USA2U2300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0da8e3f8a7cefc420a0e3f8d87f2a439b4f3452ab2402e68b6dbe8f8e43b07. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:58:36Z), 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/USA2U2300024.