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 0xd63517c6bb5f4eb47c6654be7ae469c5bc3fb7479ea9725474c2b5eea8c54e4c. 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/a05085f3-ad2a-4bed-82a2-04b0044e2280.json and https://artists.proofprofile.net/proofs/artist/a05085f3-ad2a-4bed-82a2-04b0044e2280.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 0xb2cc589e76b2c38b858d2ef2399e2491d78dc602812b17a7ca04633bfa366610. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:21:41Z), 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/QZNWX2253988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d1e4e726bf37fbe265e46861292c91606512949b69846a45d40901f422315b. 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/QZTAS2265545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c7387904545208614ef35a1e9f5b405bb0a3623702911bedbe942368c387d3. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZHN72367844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b46897a79cbea037d311978354dc15fa6c80046348ec12eba8d2dc3d04e75f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHN72367845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4a88dfa3daf465c6dec46951b09fc1c78f57dc97680d9d70060e4c3bf00730. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZHN72367846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2f318a3ed062cb306094682e88ee10268d6ffb6007927129cc48161f207455. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZHN72367847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf20ccefd66f77c383b1a56b79d0096af3496c0327d868458994b2f404e415c7. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZNWV2395353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841616cc7fc0b2539ca856ab7582fed76859f7b67aca4b561d1433a42c3ddda7. 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/QZTB62342455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313240872e657b7a7fbdc2ca14f7f351d72ea6ae02858340679aea838ce5ce60. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:57:32Z), 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/QZTB62342457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449a986eda92e9ac5fc385bd9b89a1439e0f35d973872e775c3c7913876d47a1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZTB62342459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d84a91c210303963a080e93ede9f4e18965af2ed18de5340ffef608ef52e31d. 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/QZTB62342460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eefa983f35e115a769dab29a6de3a620df8e9af8fbbf263030fa0366d014d5b. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZTB62342461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a097995c89d507a7b0aadc3584233e129707cb7264c165fd0c96fc889b76e13. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:39:18Z), 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/QZTB62342462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f10447894c29d4854a47dc9782e229572ed4ce825429c9980b7cb21dd64a03e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZTB62342463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaaf91c0e8654b5df8475c29a549219853adce8b0eb7cb924665e353cb44b867. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZWFK2335808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643c414bf13332f6c6a671764f21e8ca976f748f72c36630c1258c48f713f5c4. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZFYY2434910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeafb829547930b22a67de90705cebe70f0cf839fde16ae1cc28ffb1648befef. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/QZFYY2434915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d895705e2bdf77332b057badba6ca038f00028d8c91eea3ce9cf4e7828bb0d. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZNWX2444136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036417b43601e22e02d0de79ac357cb9cefd0716b63cadacdab845b29ef46921. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:40:40Z), 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/CA5KR2515417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036417b43601e22e02d0de79ac357cb9cefd0716b63cadacdab845b29ef46921. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:33:30Z), 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/CA5KR2515417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb4607155dfeb5c29bc5ec52340ec2944091213291e2918cbb4a3f2f33bfe29a. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/CA5KR2515551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeccbfc7598d02680d03e959eac6a7370ab679013648f94cb12a2ed7d06c84745. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:43:52Z), 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/CA5KR2515552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635649cb6d0b12caa1da6787cf5d679cff2084061f1f0b5ddc01fbaa5011242b. 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/CA5KR2515555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3de7817a23a87e3a39564e53804f5ee6432a4d35f8feb99ccda2d250384d56a. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T16:46:31Z), 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/CA5KR2515556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0deed12c4b250e1839530cef99183ea2d21481be6e4ef9b3a80725868781028b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZWFH2456940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489e82b0a080b050ffcccd14ece4e7ae601098d369f8fcbca3dbe879bb21eecd. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:45:46Z), 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/CA5KR2515559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff45ab14becc5e466164f6f9e35a75305c0959d3e43cb8a085a51549d80f8c71. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CA5KR2515560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b41dab68767fdf5ec1854511456d30061f2bca6a0f0668b02f1ddb79fdf655e. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:45:42Z), 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/CA5KR2515561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121e6c5841a8d58bb5b1c565fa852c16a9a5246d94aac5db35df7fb0b325bc3f. 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/CA5KR2532903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689768cd7c70a7d2cb3a1e7af267315b9c23d1988d2679f5f80cd9047a30872a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CA5KR2534594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964fb4a3f1cd9aaf765cd3320106cb6fc70589c94468dc5265e7dd21b58e5901. 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/CA5KR2532167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17da52a90a3aece47da20f22fb251d5612c89d9f786cd5438ee2473e937aa1b2. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/CA5KR2535010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db1155f485cd5286be584cc2c89b5f5979f3793dcb60f19f8cbc7ee71d86e68. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/CA5KR2535011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4292b07596b026339b9c03d30bb8aeb199b4d1c91e14d6a75aa97933ed9f66d7. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/CA5KR2535012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1543117235c063c59ff37d67b1448a33b1b3a518f22be4bfc04984410131b44. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/CA5KR2535013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75eb7f3b88f4076929f933597c6cd5b9137e69d5cdbf4a2f6d660852968855c9. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:09:07Z), 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/CA5KR2535014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab2c92adfbfa29f4909fe9a9304fc79d5795bfe9f02ea1fe51d4344d45dff1e. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/CA5KR2535015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38516f9aa7a0d4f920bb6bfbfac33811aa30f2236808d1b60c5d2636f82d59ab. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/CA5KR2535016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d395c67363f66aeb01f47a3e040fd3e9da07eba4ad6c3c37508e90e989ceb32. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:00:29Z), 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/CA5KR2545071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327a1c2d289e2e9cb170353179a9fcd3b84b3ad3d4ec863c7f26feaa8e522f7a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CA5KR2545072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1c72a66bf9157059a5bcd4b06087b80562d05f6542c19db49af4220002d0a3. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:56:36Z), 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/CA5KR2543942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb44e24028f58ffd5e80a932087ed936ddc947d210f6fd8401453d41f1f76e0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CA5KR2586305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327a1c2d289e2e9cb170353179a9fcd3b84b3ad3d4ec863c7f26feaa8e522f7a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CA5KR2545072.