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 0xd8af180f472891545412cfd99d228761549b9ad2ece54f03fc57562609fa4d04. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bcbdb046-e5df-426a-9f74-8ac73d2526cd.json and https://artists.proofprofile.net/proofs/artist/bcbdb046-e5df-426a-9f74-8ac73d2526cd.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 0x382208dcb67126b188e67b33ae7529fd8b01331f681d5b273aebd376abcc785f. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZTAX2267474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7701cb999526ac275731b687e3961ced4c8af35655549cf7027c7fa226c5368a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZTAX2266181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b4a8ab756e804e7f9b871ee9ecf232ac47d50d3dd44ab00d03eb23cde8d625. 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/QZTAX2266183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6603b77e200840020544471d3138377fa261ca1bc705ec3ca448897e73780f77. 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/QZTAX2266184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72346c73e88f2b7d5781ef6f7c11bb75b3ad00f714ba736a0862415062756a6. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZTAX2266185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8fd8deef22b13627672dbf4012bd815d102af69e770de06ce566b1a3b8da496. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QZTAX2266186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcafbd9c4e7abae75857c5a61a3f5d4a8507e3913c29ef3c25479864b1cd8c9. 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/QZTAX2208632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f7a6b2cb7fbb9015fbf612e467349767f8ec43d8069d5c6b60f0bfcd79f2de. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTAX2208633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63fb2af64552e8d3ee505b77dd1bf779bb5e2f3ab04fba7091c66fbdb6c03ea. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZTAX2208634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2be8022a19267a8d2157e296bd3c92d7df1c7badb36bfbb6dcf323d9070a98. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZTAX2208635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe934d4aa56e3cba25c1b216f826252abd256cf81e4d4cb5ac8a79733b83bb0ea. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZTAX2208638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99fd92e0fc77c3a8dd17cfcd87bc54e54573210d44a475058e5a44b780be0292. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QZTAX2208639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4f5625970b4dc2a4111b3ce4411eaf521b44f00695b9459b643761df1154b6. 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/QZTAX2208640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09253951df6b93dca1d88b23ed1e095078eb196e865d030a0a9368f7bf7e1717. 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/QZK6M2327408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8fa54fc63c63984e15fdb3978e05dffd7a84c8f6ad91d9ef0b23cdac414e0f. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:43:21Z), 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/QZK6M2327411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd89dd22ae1c9f31aef57f17e069e22af9cf79085f9b94112d3e1f884dd36f3. 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/QZK6M2327412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef3c38200a78e4bd9a5e038d4c44931d7063f4ecab1c41e4c140fa8a4d3b215. 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/QZK6M2327413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa418437489488eb817c0bfadee7c2a2e01281e92bf126df36a2d34dcea34b34e. 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/QZK6M2327414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe612f1b7aa6f1076c1811a6815a48cd23c37ee6d569b4e20e458ecb122f1c03. 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/QZMEP2355529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b50f7a08c36ca053c5e324141746ab82fcf43a57422ce9c12a7c7b27036882. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTB72377018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7479afe6addbc428fd7569328f28f1c1a8339b70a2baba5a6fe2ed7a54d51e4e. 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/QZFZ72490104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012273fbac6ea0b0e58ff7bbc67e41ecbefb092c1fbd9fd9866f1ec5a0222d29. 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/QZHN72482131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab9cbba810ecadbb35a715150865a4fe9b2ca9779c3d9d35f281641c34e73c9. 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/QZHN72482132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ea3062e318da1e5c557747d303a7e82494c4b8cdf7f0a0b7e5efd8e67f4e77. 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/QZHN72482133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff75699a463d6a51b5c9c9712f9f615e7c4672e724c09937fbbc740c1ccf4de6. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:05:48Z), 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/QZHN72482134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1230a061c11df684326809f2c0d9213dd581e066b05aabf8a38c5c26aaa629. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:05:14Z), 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/QZHN72482138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9858b71925769e4df110802468147e698710569eab504362e51115eec4d6f2e7. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZNWU2431267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ddfc1fc245f90087ae88cc956649cc2e7ade7431e8f7cdf6c540b7a7b3af0e7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTB32428866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d94a99a583874baa8c46610fb3d4827d69adc545425dba4c27882e7f5ccf07. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZTB92476563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb768832902095aa15103a3a53a208f366719cccf0b168bb3c5d56991b35255b. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:45:42Z), 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/QZWFK2467397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0faa063fca7dc172056f6bd0cfc4d9b6cfb4728f6ceb1acf9e50c73233c1beb0. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:11:06Z), 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/QZWFN2406221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5883e92892d9380f1636fedf71f07118707d825b78777ede749f50be66fb851e. 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/QZWFQ2483956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3464849010a1de58009035d74d34ed0bf6e4bb8ca7b340e6df57624a039bc6. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZWFV2462543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ea9517a20f0729f8f24e0752abbc8c820e6c263a07cce6a51733fd3d91f0eb. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZZ7R2438742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767e1ac7ff7343bb7b0c8bada8c7c7f9e797a9d38ccf37e11f30751fc9b53885. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZDA62507237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d9d624969fefd8e3c686bebe326fcf7f5bf670cffae376ee32ba4a841005b7. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZK6Q2588731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabaf56982897c3d25236b300d42745616b62da0cac94d8dfa7215a0bc50be77c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:01:48Z), 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/QZPLS2545787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9d34fd7d3b20d932be2bf57036a41042225ce6a7f7b246e3ea029a6b9e213b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZWFP2564118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1dab372b0e22a292c63f160084d841a9ef686d3458fbdff88280c45c93f07c6. Chain 2 (Bitcoin): anchored in block 957791 (2026-07-13T02:46:19Z), 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/QZZ7T2542748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b171301afd8b05b29eec372dc9f5c1b9d01974563f0cd9d46fa3032f6701082. 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/QT3FH2540506.