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 0xb588cea4f442d6074798d5af1410e9e4f6f64ed3c4066ed6ecb1ec7bac88dbec. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/449e80e6-1e65-4039-a8a9-61510c5ccf70.json and https://artists.proofprofile.net/proofs/artist/449e80e6-1e65-4039-a8a9-61510c5ccf70.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 0x456743b3d317cdc9f1b3f63e3aec35e90964a0065315ab1345a0417f3738c4b8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAJA2402249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f7eb3a9ef15df0f21e41d6aedb85d75c35832dd6492895b6fbac6f3198ea9e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAJB2402257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb899993e51777e13e81ae1e0e9581661f8d384eebec3a957693395537d340cbe. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAJA2402267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda84e9541ac0be6713ce416cde4d33bf1abb60df922b60d65df9c775e0880b5b. 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/TCAJA2402276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33aeb72805f6125f5986bc75d31bff69d31f669d8a896259fe38b877d137ab71. 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/TCAJA2402290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99af5ddf7e12c50ba5a0792475bcc7a45c5789a710b3909e4841244a2401ebec. 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/TCAJB2402301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf312e112c8afc432dcde0c6b71cf961c0b3851a81e45655064464c2eb684b871. 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/TCAJB2402355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc88c20b6e4a7311ec6f7982c10c05fcad9511bf434f2b9ab2362bbd3591db46. 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/TCAJA2402377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a95f64f6560f12a404744eebd3ae5c2882f0c1a214676dbc13a7f686cccbd76. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAJA2402393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4ecac29d508ebbeba89de715f71d7c282b5d50305f877f84d510ea391e953d. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/TCAJA2402402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e37b1663ba6789807bc31235b4feec62c9cba5edcdec5bf5d27e662237a5c9. 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/TCAJA2402408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bff2fc5c1dc81b12f386feca610831d96f0b6b0f40dab9471123ea6ab521b2. 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/TCAJA2402414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4d238a52b8ce3e55cb5e7489f3f90d8bcf876963837b5f4c58e54daccb3cff. 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/TCAHQ2358900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c86cbe7008224a27ea5d833c06185050c50e1a254f0363783c00828e4b8753c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAHQ2364393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c97ed0e9ce02c1abcf36a70e6eed322fd4fc3ef246de8cb1c91d9160e186908. 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/TCAHQ2358909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e2f55fd44c2be4e4dea686ebbae24782e9a8af00e80eaac6f386561928fb01. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAHQ2358950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e75602de694c4496b94130313fb3dbe93dff682a370fe4895de9ae4724b4e8. 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/TCAHQ2358958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b28b5022bd499a821cd531ad50adc23469fdd0b5c578149900f3bbdf080ee0f. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/TCAHS2382213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843d693626f5493dc10150a4d2708235d9db963401de9fe95be9e45d8efff00e. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/TCAHQ2358981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39bef24f4bbfa6dfd41f30a80e8cf3584e8d7aac626a53a583a44c855378b916. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/TCAHQ2358988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f574ec466531e92016ed90ca113e7fc0aa5e0694573f49b2cf2f5294726e135. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAHR2337016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa5f3c9372d379a70b845928a6cf6c9eaafa3101be395d5d4014eeb0193101b. 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/TCAHR2337021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3703da6e6b8bd956f78ad5cc5a1bba48660b9dcd970d33761dd9f63fdde542. 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/TCAHR2337061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bf38f3b6adf39f05a1b0d17c09403b81dc5a93b111c41eb7c65038e1bb0377. 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/TCAHR2337091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55dfee07dffdfdc684e625a3420f8c3be2929308eaa46df8e68f045f1fd49802. 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/TCAHR2337100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6e9fbce779089a00efc544ff024731f77a2c3c41874e83ebf6c84ba115805f. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/TCAHR2337111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5974b4ef9ddd76ebceb347f8cd1da324e6f5af4dafdaeee59f06e68da3a07666. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/TCAHR2346962.
Searching for Mr. Kite (Expanded Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44b327aa9689e09c44c9bb952688a0a12306cbcd4c00bbf7374e9584964c00a. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/TCAHR2337138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944170755f6b0c2d2dd3f0f06eca9454dd4725b8febf4eab7b7f5d45272f6b6c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TCAHR2337144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6336620efbfdd5b4d52b0cabea79d31298bfbcd3d467c20b9f85eb50bd684ea4. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/TCAGG2212341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b28b5022bd499a821cd531ad50adc23469fdd0b5c578149900f3bbdf080ee0f. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/TCAHS2382213.
Dragon Island (Instrumental Symphonic Art Rock Suite)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749bbd0d01836367ad1e952b18645b8196246d367cf68ea9d90ae153bfa151f1. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/TCAHC2336116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3e9fdb878b3785f1288b8933ebb4fb492ec0dac8c0629f7a4dec9ac2670671. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/TCAHC2336410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b70e853c14a43739bb300b04e962dadccd8207ef452588a6070dc5c4d6abf2. 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/TCAHC2336436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9275046dd1d83c7fc804799a29819ba26b88077eae1949517d14a75b1c22482f. 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/TCAHC2336442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231f8a21bda23a403396673e685f0c8c941b0ed441455b8894ad62cf210f4d8b. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/TCAEB1932557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e863c79e3b3b1734a7433c09a33d479b9c1ab71113672caea8f28b9c91690e9. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/TCAHC2336457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76458cf8997224735176c3e8e271d9c472e619085ef7a82f24598af9cddfbfdc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAHC2336478.