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 0x8b9d62106016b14683aecde5d28e970f50da54df6e95a1519956e14497e706bf. 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/5a63fbc7-5fea-4a27-bf71-7c6308856099.json and https://artists.proofprofile.net/proofs/artist/5a63fbc7-5fea-4a27-bf71-7c6308856099.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 0x98a9f8a1dd4cfdf4d815d5c8fa1350c39e0a7de31569198c77a39989f15d538e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/NLP762100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77ed1a3f42034a488a2a426e9d2575fe4a8e15614e4d1f9f23c764e458cadce. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/NLP762000028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f054fdf4c012d3421b9d7ccc3121bf21afc3db6e0f6b8bae655d7024748b116. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NLP762000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8c5a2d834beecbca53a2c192abc87aafd2783a3a844e375bb15546f2d71983. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NLP762100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ece5ddcbe8a1438785d90d792ca704a4573e991fedffb82e42663d39d1d1b9. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/NLP762100104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae7431c912e4b9a58bf11a4fddab893d180016750d552be3d775acff598e9aa. 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/NLP762000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3b0024e62af1e2afb8395916c1fbab7c2103986bf8e853bad6bc25c0c5041e. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:25:25Z), 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/NLP762000136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a9f8a1dd4cfdf4d815d5c8fa1350c39e0a7de31569198c77a39989f15d538e. 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/NLP762100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7093e0f06c7df2790e5bbd5b24580f049315037b0a7e0d881c64d5f3f295d7c3. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/NLP762000183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b982a1f109ab715dfe0c410fd92be4bce6a6e8007b9b8ceae588af26dec7ac4. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/NLP762000262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0a7db3387e3262846e331323b0f9d8c299baff24c3ac2411820e2508fb449c. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:20:37Z), 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/NLP762100121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2168cd7b13e32150aa2ca21c6be51b5875ba43ee02158e0543eda9597c808ff3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NLP762100197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8656fad27bb19ad78e9d211be75c4b4ff3eeb0f4a62c6e458acaceef1e115012. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/NLP762200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e143c011f45dee0e4b703eba31ce8454b0ba9b943ffaf7a302fd7f69b69e7d6. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/NLP762200124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23afa8447fe1a540aa151d067db2647cf9ff6c027fe24b7f716f4432197f846e. 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/QZHNA2352766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23afa8447fe1a540aa151d067db2647cf9ff6c027fe24b7f716f4432197f846e. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/QZHNA2352766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad56dd675b07b36505602fd252190ec7e8f0e8919df5b829719dd6cd3c43529. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QZTAU2347862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b84f5ca11b611234bf5737f4eaf7c5bd0c7fbef16046d683734e8cbcaacdfd. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QZK6H2394294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be690ac28ab60cee948f763ec8a2cf1abadaac107fee0b3f5028c2b1b086b34. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QZES72396369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99cdfb5bf2941814fbf644a8bc61c0e9b568acdfa4b01a6a2adf0e83141d502. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QZTAU2347864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f133a0749ee99177a0571873686c9c12b2145d626364f118c3b0d95bcd847d. 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/QZWFJ2340395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a8041e6f27f77208c48f2c56e69792d150acaf4ae887a37ea3a73c267d1e69. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QZWFJ2340396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedec91cb3b90507c92e03e9e3bee2c26c64abca72623ad2ab76c4a3b42143fec. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:09:03Z), 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/QZHNC2407668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaeae101b5dd6f01838ba0b5900b9cf3a64c122e6665f8ef3a809a903ed30369. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QZPLS2434532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279cca2ba9426f73eacee7188fd335c1daffde2d2317dac941bf291a9ff277a9. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/QZPLS2434533.