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 0xbc9902c5299638629503f731c8365c734032d30e35b8277f1e204b6985c7e748. 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/facbe66a-6bd6-445d-b49c-a2e90f8c1440.json and https://artists.proofprofile.net/proofs/artist/facbe66a-6bd6-445d-b49c-a2e90f8c1440.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 0x46f0ebb8072857d52722700c61a6035b7b528c3ce66936ee62de8728c8ebadc8. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QMFMG1500469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b7fe0aa1bb5e45eb61f6f085d410bd8eb35685659d8fd966a712e7617e15ad. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QMFMG1500471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b044c9acfe44cfcb970b18643ad1330a17aed049360c685a0f6828e0150a980. 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/QMFMG1500472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe7a639d3580810949e5e3b36b50d82db30e9dede068ee6a44392c39644cbc0. 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/QMFMG1501215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4f45db694ddd7babbc7ef108c82f479f19140df1bd17a5379d2c3fa6cf9d90. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QMFMG1501217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce013093543cf776472a5af7b6b51b50909ecfd340bff0281d53d448ab974c11. 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/QMFMG1501218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf238ab888dc756e8a738650761b1ab00146c551a844e3f21a9914a346e88b990. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QMFMG1500499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656eaa148abc052cb3aaded6727772866273b84dd7197cbd85fb0e2c85972c18. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/QMFMG1500502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0146d9dad73bd346623490d5370928c66dedde89cd954532799747dbcf6da76. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/QMFMG1500451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c4ddbcb41c9d5f48f10083f58f81b869857c992240908b4edbbaaf24e4e562. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QMFMG1500455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe230f8877167ef18626a5e3ae3b8e9f8e0a384908db583d13d3bb762368b72d1. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QMFMG1500396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a174a42035a6b861fa7908850db2be01f1b11bbbc95aaf4b3227b41d23927e5. 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/QMFMG1500397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43068bb2166e1246e8b6799df349a8da22e37eede72d2564aa2f92c1e5ac5b93. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:25:42Z), 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/QMFMG1500399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0584bf3d2c06b8ce1d2d78b51f35dd8f15f7b7df0dbe54b41653212ec19117. 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/QMFMG1500400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4bdc147e48755339091bb9b261ddb0ec2164d2196bc4788f415eb62d3aac30. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T10:21:17Z), 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/QMFMG1500328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5f3eadbdec43a535c0cec40d9c139bad49d227e78027757330ac9f03cb4b29. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QMFMG1500332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0910e3814575d9624a558f8b095d170a79e6698081ecb67c27d3a1ce234426. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:55:26Z), 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/QMFMG1500345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc62b88b65d879f7b851ac3ed665d96b5dc43b53afd2238ed3bcd3bce22c1a4. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:36:24Z), 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/QMFMG1500385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4fa9d0fca9663f34be6a7405b4ddfdb382f64b3cc6a911ea07bb98078acae1. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QMFMG1500317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa102e38d0147ce91627bc32998301da0587ed5a44bbd5b73beb5daf5b59072b7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QMFMG1501234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465cec7537a790c435a88067f3270ca136232820f37df2fc0c9dd3412fd0fee5. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QMFMG1501242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fdfd9c85978099b2267dbbda3494ac46fab4ebdc331368a5fd060c6791eaecd. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QMFMG1501250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01c0b786ca618f353f4fab849f4c969a3e7f26721ab6135403c86983035a4da. 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/QMFMG1500579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4731f4fe1eef8071d73e80cd4f502bf21bb9ab5a5caf1a293724b909cea405c8. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QMFMG1501212.