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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709eb096f38a68a99156faac9ae63544d9ad02f98e2adc1da31a85936c114dad. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/50f8cd8f-12c3-425b-a442-f82635eb541c.json and https://artists.proofprofile.net/proofs/artist/50f8cd8f-12c3-425b-a442-f82635eb541c.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0098c7a86ea5457de8bc654b62d5584aec33040fc5446fe14bcae9943fe360b1. 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/NLCK42235665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd71b98f01559d01798dadcfda424720cceb3ca95be7262f37a68cb2eaa8489. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZNWR2429744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c08633c00ab3850561a88698f981d646c941b4fa05b1c96fb1fb762a7a9d8c. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QZNWR2429745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3114798ea25837450d01304002e2e473af0b8326611a139d55c6f176eb13084. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZNWR2429746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733751aafccb564b4dd05fd0330d3442e592e53e0e4d3f05ef780b8abde3404e. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZNWR2429748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3bf51c18058fd30d2084461127cea2d215c9aa5b28b15fe54cea1290167131f. 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/QZHN82343943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecfc4ff849d3e737dca7ca77ebdcba05adf641be2ccfd3b8315649821b599bd2. 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/QZHN82343944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc885a54f31871b844937592b0e932b55e0b003de1f6b57863e4c7571f8f40a6. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZHN82343946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e50d589306c5c1431a1f676f05b534f70e2f86510eb8d87bddccc0b55955a1. 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/QZHN62140114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc6801ed3b3fd179a246b9d3047667f105abab6eb63005f48fce93e1f310e42. 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/QZHN62140115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c840e6e7abecee6600f37564a92a5edff51ccffe5063dd61205798b50642ec. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QZPLR2074975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d80a1d66fc365e918c2ef6733086b9d48241039451ffe1c448f8865096a12fe. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/QZMER2347232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b5a4531637312634a382479cdfc9cf95ccc64c93aaa8d34a2f97f047c4359a. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/CA5KR2305327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1538c68f6b227fdc95c4bcc0f860a1848acbf7027127d2aa3fc00d9412f37012. 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/CA5KR2100604.
The Living Morass - The Alchemical Theory Vision
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5144aa2d537b30e5df1a10550f20f761b1adb3a653f64ebeccf46b3b0d3675f1. 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/CA5KR2045041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786a14221379c6d6517f87cdf736512c8b7817eb11fbfead5c19bc6c2b00e8ab. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/NLCK41095623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9413fedbbe8d76a8dc52ad9b78abbe015f2ab0c4392d04da307431f885d7f5. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/NLCK41095625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bacfa4eee2a389a514c0d33e1e3bd5d1311abcd96ca60cca22ef5e69ce5b7d3. 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/NLCK41093331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe74f9640dc42708412ef5967b57787ba28dcc61f52dd5e8dac7e093ff8f5dbb. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/CA5KR0010265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c2cecd7206447b15bb4b9d6ff7127cb286e8555fadfb85c0b1efaad76b9f8b. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/BEN582100502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e6dfa04c548e4449efdda42c18884fee2a5c32dd38ed1f24dfc0dad567cc18. 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/CA5KR2461373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7113bb96162a8a11c06609865912516898f5664d0bf4de195bc1a5170c0764. 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/DECH62001115.