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 0xdbc846ff9fef8e701bf10ef41fccee136321bfe37a8e79e5580c4dcda3015ab6. 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/62d560f5-3140-4221-8e40-d0557b378c98.json and https://artists.proofprofile.net/proofs/artist/62d560f5-3140-4221-8e40-d0557b378c98.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 0xccd05876d6da6a6b065b9adc245686dc155452a03626fee2d9fa30ae362dc743. 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/GX3HH2570498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1ff065c151693acf4cc6c79001dc8050f91a4a9c659f2b59c0a4ea30d3f5d8. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/CA5KR2527850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9efac362b50ba21b0c7f7d0568a69349bb045d1548fff2bcf2044005506d8869. 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/GXESV2568130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb3a318009cb26815e96ab505a623b3b7b686b4b3ad3ec2d4353653338bcc7a. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/GX3HH2541660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10865108e561b7628db6c48dd2664160ab5c556b3a5be669d85c99bc8eec1438. 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/GX3HH2541558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01cf693d49501fe5df90570a2b7e2231494490f398bf87091946dc109fce99e5. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GX3HH2585124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeacd6eda6d67dbd6672ae0e0bc1576f6ef14706043b9cea74d602a0a842340cb. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/GX3HH2524152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf568807c8e95d792dd3f876a94a16190e2cef5780fe2df090ac6708bc83f9b66. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GX3HH2540694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e5bf0a4cbaf29235107b76982e056d656aa3341ad70434d90a293d40fed6ff. 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/GX3HH2568755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272e9e1eb04ffc5cc29c085c588310a56de84cdf7ebba1a43e1996c5fafbc2d1. 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/GX3HH2505693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8de2009a617d7c9fa12794f85c77d06a9e15cdedc65d696eecb9f255d56823e. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:00:07Z), 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/GXBDT2599355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0fcc0b9ca64f66563b3a644dc32fce2f00c19ac49d959947b51f47a9ce3a0b. 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/GX3HH2557122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9235224ca117bf9cf5107c51f087702fec0afab123b4889b3a5b04358bea0ff6. 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/CA5KR2494388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ec2462cb972253179a453c5e29689981998f07a19cf691e4a4751786b8d452. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/CA5KR2494415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada4429a98f44fc1cd09d8201bc39561e7e3db4792fc98691c46adc9bc595cd1. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:40:05Z), 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/CA5KR2495202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00590aef5c8a1ad9028a611d999a30397553c237e1bb3e2e2676b42f17461043. 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/CA5KR2495494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50411a00a36b076983eb3b063ec5a07f938cb092f3df274b1f8d7ce911f21e47. 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/CA5KR2501200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f2bbfd72d155ff617af82386819f1cfe59418963779078fe374dea97dc3373. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/CA5KR2501202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dfe1d9db35bf44b1523ab3710021e92353c3f5c946197ac56047daaa86e5a41. 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/CA5KR2501204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3a77f4535e3e16578127acb5201c2767db079ac8a74dc96c655b39758cf46d. 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/CA5KR2501207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1725b3007e27da6a016a67743ea512b3a37e4ca1f0640e6b09d1d0be195f6b. 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/CA5KR2501209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f8e55b4ab774bff55183dc8699c595583e03b0c5ede0f53856e8ce822dc94c. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/CA5KR2501212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f74b3b9ed54f2f6c0bb556325e674e25ca1440d87d43ec4af6ec97b2a37673. 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/CA5KR2503072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ffb14eaee4d00fb08304bedbebbc3228a90cd6ac04be77330fa900004f5049. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/CA5KR2503581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7773586cbb2b60f39ea41cce04b6a51e36cc4db96207bbe04e1e79ae88f375ad. 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/CA5KR2504873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a5b50af3c5307dc5e4a4963b9c1ee99f38f6f654fe87fcbb78dc146df7ca03. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:44:27Z), 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/QZTAU2236573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01cd229db8454878f2d1c3cde7f0abc68af1402ab277fae97cd760e70bf46b77. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTAU2234932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4327e168576d65e5cb5d4a9203413dc42d693688b76acf807b2e6df494577ad5. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:09:45Z), 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/CA5KR2508703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56baec953616c353c46a00f263e401f8c76f3eeb3e37c45c66aae8f9f5eba98. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:43:29Z), 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/GX8LD2530461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf351eb6c81a3cf7e2df57517d214bce05013b3c5a60309afed6f734b783a770c. 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/GX8LD2525790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf2de709a9507c96d46eed56a8192525c784f86e686c8bb0c2e39c4fd3526182. 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/CA5KR2519620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685039882bb222851ebe83056ba06342a131c6682d8024ed34d9b77ec3562488. 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/CA5KR2505645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bd3d8a815b11fe7063b08162d4542721008404ecb0f48f81c8530e3e07d8b9. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/CA5KR2538441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82f87376db7887ed520fbc2e8002d5e070b9e4a14c9555b551832fa88dc514f. 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/GXBDS2545916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d42bf0812bb6edc9bc3714e6bb2fa1df3c35c01c12381ad6f26e67ebbc771f. 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/CA5KR2543128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedbd210243dd31af0078cba4a86ae7c87ac367554a0ece60d42aa8689bedda74. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T17:28:24Z), 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/CA5KR2588415.