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 0x63dc60068481556be0c76ef340e1975aafaa0a706bad8e1d377641d1be0880f5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/360e3d92-3846-42ad-8848-1d1dd1078a7f.json and https://artists.proofprofile.net/proofs/artist/360e3d92-3846-42ad-8848-1d1dd1078a7f.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 0xb460de04ab6ac9291967f42f83780fe2b82134499e9a71a1744cc3cec2134834. Chain 2 (Bitcoin): anchored in block 957648 (2026-07-12T03:52:24Z), 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/GBSWE0813148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99553c31637a944bcbda7c1aaa15c12612a3fad0e4ab0f7dabc382b5267e797. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/GBSWE0813150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560bd59d0e42649efa922f1302821a59cf7434d4bff2873f721a50d0b8dc1dd7. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/GBSWE0813152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ba0e5f6c65890d3c5fae262c246d50333c4b3104a2982fe371090d5c5929b1. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBSWE0813153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62a612e9b64b7a6b8ed334cd3d275fdb8257b882d2c0e8e99362e271165cb8c. 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/GBSWE0813156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9e0ee7d77bb9d536aba34505cd373b75c86144c40920ea4c512876c4f50efd. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBSWE0813157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0025cc6ccafe27eca5b4414b379fab0ca6bd39af47ccf354db9aceb7e6989ee. Chain 2 (Bitcoin): anchored in block 957647 (2026-07-12T03:57:41Z), 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/GBSWE0813159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929dd029a2f258c04210b6f5f227c536d96c550daa5c6739d8825baa01e089ac. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/GBSWE0813161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe039a0d4c626cc77663d2e2f0d6a2c5a141d0bce655febfe1942e5fbf6ddc370. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GBSWE0813164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2208030d903d66619f9c7312fd24620440070b7f535f600841a39d83288dd0e6. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/GBSWE0813165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d6ebc79a94350d26496371e9489c5691bd0ed984856a118678c7796a807b82. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GBSWE0813181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53de1a276a29c93a20732cbe14175de261bbdcb2a4d15b02642ef31186ba33dd. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/GBSWE0813187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e1b4c814fa359af1bdcbfa29e639f055f223d2bb986341ae3717e5e8513335. 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/TCAGP2279528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94baea542c0460c0c0fe347cab8daf20b1295482d6789d80ac0b02596aef9f09. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/TCAGQ2295145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bcc88e737aaed4285b3047f29f4d149b597ad385499ff071f31a385a233e5a0. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/TCAGQ2294745.