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 0x6c17f498d072585dc92458022d1cff04ffa6989b6f0f8c1f9006fe33ade980d0. 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/586b3101-792f-4365-8dd5-ca6f24f9c022.json and https://artists.proofprofile.net/proofs/artist/586b3101-792f-4365-8dd5-ca6f24f9c022.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 0x8ab80f8d9befd0c148b4530ef7808d91fedd74b5654dad7c2a4b5f6993adce6e. 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/SE6XW2299046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c0e137c68d4e7a7ac58c1e6780813e2befd42dad87234d323b842895a9e7b1. 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/SE6I32082012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf82eecf9cb34a215ce7357454fc033d4bd62d73bd79109a4f0e92f45ff61b74. 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/SE6QE2132572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2542d6581c7547e910f04259d88db8302566333ba80078c6afd8b23517da177. 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/SE6QE2132573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d35f75f9717e6dc6bb8db610fa61df8f903c13bbf27ada4203a2dd355f49aa4. 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/SE6QE2132574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa856489cfb295320cea18e7bf0fcf318cd3661949266d195582be02c706070ff. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SE6QE2132576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6c9f6a155876f0ed566247cc4693c3f724ca7d0332790918578c5f214c3ff8. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/SE6QE2132575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1757a58794e3db17fd0959c7708d1fb50b0ce3b17282015d270bea16b06f1fcb. 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/SE6HN2455775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8431ce65816f36e05a3676141f1ca3e31d938d1746184cb1a99f1df343913abe. 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/SE57V2305401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2caf43a049ab2cf72f5be47ebee3ec400a96bc394c2dc238321141412bc90565. 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/SE62M2290914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd699f83e307f593aa5eb80952830f98440c6582677767487e07698ea5a141f6d. 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/SEVQF2200301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2124be72b4147d05760044f8e093d180a8906367570faec35043fdee4bf9eed. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/SE6XX2182928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da24dff8191867e849bd30237a90826b976524902d30894716bd6a59788d0d3. 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/SE5BU1958100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abc8088272adb7ae3298a736bd3eb1961c97da57ce6d7ecce46f8e87d3bdd4f. 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/SE6HN1934838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a26bd55ed8c61ffacdaee6cfe5a0b3f0808f850883285a4bffc5e320297c2a. 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/SE6A91923583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52cc6370aec5aba175698fe5d2206fbe42be9dd2a4ac7309596316a9bebc703e. 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/SE6A91873377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f7e7986e312dd29fb0b8cf74d7c9cd4a0405f92b589e6be387f12040b4df86. 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/SE5BU1881081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4cbfcb973d49a2e99cba69fd92870c237e7e72668403c516e1014fe8e90941a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SEVQF2200302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2caf43a049ab2cf72f5be47ebee3ec400a96bc394c2dc238321141412bc90565. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/SE62M2290914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db0a9925ea252aab428af664cb7f1d646e7dd44785271dbc36987e14c3d6b0d. 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/SE6A91830435.