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 0xb622f62c902bc9f8e178fe2ec9d838e9ff1952f358e5e90b681155fba557a153. 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/fa1d96cd-fda9-45eb-8635-0eae6d9b5c5a.json and https://artists.proofprofile.net/proofs/artist/fa1d96cd-fda9-45eb-8635-0eae6d9b5c5a.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 0x9046b618ae5e3e7173325deb11a814c655d20b85ec679311220bb31aac241d3c. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/US4N80503517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7bbc150db2b05973699fbe55efc57c0aeec1a6614086a248822289be4e8bb7. 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/US4N80503519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234281ba6d1d652410b5594193217fbc243dcba89290e756d267cc89cfed9b22. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/US4N80503521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea25b99c35bc7bfbf5c03c009a818fe3a313924b37fe4d08c4269b8edef8166e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/US4N80503522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a740d9e1c3a8303b4ea09f1ccc134d837c0eda5f4fa20243ff732cba247112. 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/US4N80503526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00b3ffba5666c0f6e4a552907d24ffcae1a3272169ae0777a13b156d8ae47d6. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/US4N80503520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8e7f6830112162f6b7425230204ae124efd0d84a86f794aee10c2825df8746. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/US4N80503523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da5c23d475be7a7c7c54bc69e9d7963607efde2d5079bcfe33e26a35d6ccfbc. 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/US4N80503524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fcd65c49d15f41e5b7e3e4fdf901559f4da710c0195f5cad63b6740e49336a1. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:19:36Z), 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/US4N80503525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00b3ffba5666c0f6e4a552907d24ffcae1a3272169ae0777a13b156d8ae47d6. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/US4N80503520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da5c23d475be7a7c7c54bc69e9d7963607efde2d5079bcfe33e26a35d6ccfbc. 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/US4N80503524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fcd65c49d15f41e5b7e3e4fdf901559f4da710c0195f5cad63b6740e49336a1. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:19:34Z), 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/US4N80503525.
We're Not Alone (Dan the Automator Redux)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8ede2345f0bcd9b58893e7442223879eea59eddddac7ca555aca56608d7bbf. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/US4N80700277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24a772ede46e5268f433c4fcf3f0fbbc8a9949fa2fe58d54487bc6862f48551. 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/US4N80700278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8ede2345f0bcd9b58893e7442223879eea59eddddac7ca555aca56608d7bbf. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/US4N80700277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24a772ede46e5268f433c4fcf3f0fbbc8a9949fa2fe58d54487bc6862f48551. 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/US4N80700278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4522c27e857a30a5a17d704cb8e17235222c8a90ab0cbc9e3d7d62944c010491. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QM5WW1501157.