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 0x4b45060890ac6277e5421c7a15753152ba36df37e7c19747635fe692d40ec14f. 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/30aebc92-8178-4cdd-bc8a-5c4df7f8b557.json and https://artists.proofprofile.net/proofs/artist/30aebc92-8178-4cdd-bc8a-5c4df7f8b557.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 0x7775a940c2421187a06b9b54d3bb0340537a373193d7b7434434d9a6180db085. 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/DEBR30600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf843db796ff683207d32c67a7c655074ce4c4d613639e45af749a3a50fb036. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/DEEH61700050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea3e09054968c40fe5b0fee98a24ac13d917ee35466c2640093402da01d82a0. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEEH61700149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdafdee619c076688f1f1e7cd166213d9e5696a7769a8c7fc35c3a2a4b4fd2d7. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/DEEH61700158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe733d0dae036c7bf19dc6c99fd3fc54f2f6bb961dfa2bd6fdde5fd19c7f81cb. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/DEEH61700368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88feebedf86e8e0582d28489ef7db5649eb8e45dc451b3c028c46d634e109380. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:59:59Z), 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/DELI52403981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbef5a9e23cf392f2768000e669c3982bdf6d53a0b9591faba1de9adf2ee24c. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:20:21Z), 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/DELI52403982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaeb55d39425e206653aeef05dbe6fe8fb4d26c80dc023ab1c9b421ce072d94b. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/DELI52403984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb3a8222757f913e490f36ddd391b51a7a65a2daae8eaea14309797993dd7d7. 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/DELI52403983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcee63e0faaac668cb7d282194166477aafd5ef61913b00082257f23629cb26f. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/DEZC62463269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad9ea907ee1473fd8b6990c0270e1aea3ddd836a376c8607e302ab0939196fa. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/DEZC62571160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52378310dc8216b60c887564e3496d116afd641ec40f5aa8c87fb94419213787. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:04:59Z), 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/DEZC62575583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b968706f8466deddfbff2001c0832cc199024269172b30bf4d54586e4b01a2. 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/DEZC62575585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c102904b885f4cadae99efd37ea5d122498982d338527d0510ce6decd52b03. 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/DEZC62587279.
Can We Be Making Space (Without Taking It)?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46811b62e59ff0f04bf9e6869faf3f1759137f8a0e92240d35d49ec37313d772. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/DEZC62593809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c376970065ddb68fa47ed7bee8319f45b60bd3aa7ae3020baa232eddf41e0e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:51:30Z), 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/DEZC62593810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaebbdb0202f9233dc01ead58c1ddf2b68a494ad1f89231fba712c4d290f61c2. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DEZC62532352.