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 0x6992a0c3f3719081c8c916ec9ef05ace1a9f2d07b25e5d162d5f31adb51baf37. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/93869c1c-10dd-4276-92c7-922dc5247f1d.json and https://artists.proofprofile.net/proofs/artist/93869c1c-10dd-4276-92c7-922dc5247f1d.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 0x80f4b69dccddc1e4d0417aa79a4d0bd2e052a945b42cd09cac784112ad75b231. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/GBMA22574663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc579519945df6f1594ada5a012acec3f528217354df737455a6ae726c607e75a. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:37:34Z), 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/GBMA22576207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde80ffc3c82752d7843a97b0cc0029dac0d6d3f8bd783de54ac3a74f2b90ff83. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:07:35Z), 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/GBMA22576212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ecc433284ca27a28581b8bfd6e45d28520113cfc2d85134b0a662450a15732. 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/GBMA22576214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc448f2afad3fea05728043479c109d03f33c26c9c159ac5150fbe9e6fcfa9bb4. 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/GBMA22589571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dfe0c9604b7f5b80a15e1dc58fa8f2f3ee412a2a599d40c18b767ef8c7bf9c7. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:06:27Z), 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/GBMA22589572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3618b26e3d75326afec4f35a1054a9eed8fa3b79bcfb24397599d41c248b72b3. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T14:01:29Z), 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/GBMA22589573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97c9b2f9262660cb874a75f101af2dabbb0868de7b2cc466b728fdcfa1a7d87. 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/GBMA22589574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451129e4c6d463ac14c4aa27016ccf21fdef8e3323653573a34e967463bd7df2. 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/GBMA22589575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba5757bf7daa76724ee94d64c414d6da13c21aa5853a43d063e52d367c5e672. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:02:08Z), 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/GBMA22589576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2937c1593d46455f09260685d3529b89a36f7b82ca50614fdbb4c0d07f8c053b. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GBMA22589577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1887c0bf11bf63e3d5dd70036264bd8b2e7d5778035f363bb75bb118ab8fc5. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:03:59Z), 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/GBMA22589578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e740801343a015e6360e082bb9b1c271df0d8e14d8545f74dd5643a65a8e5a. 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/GBMA22589579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773fc15f2639e034a9b229e37fdeb9ec695c41ca2d292ac0c9a21461edb0af78. 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/GBMA22589580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814881154d451b46572f581947321ac4bae79cb78d55cd093fbca1c044aff971. 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/GX53U2520862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e74c04bb86d31a3c607449eaa3411e6c60f5f0aa95adf3cc5b7b1fcb888df8. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GX53U2524890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8660592c0ad555a1ed2ec8942f8189c41588ab4b1d842656229355246a66fd. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:48:32Z), 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/GX53U2524891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b32165ed4186dc9af5f61b60662d73f8fe7a57d6a9e0897d5b8e6ea304ac52. 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/GX53U2524893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1afdbb148da7e2ed18566fe0c9aa397f549997d93d2ba61c989e4dbce58f7419. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:05:10Z), 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/GX53U2564327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae64675a209f0e115d3fa03d0ae06b02b44495e5cf19acfe61286a4ec9dfb2d. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:33:53Z), 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/GX53U2577770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b084d951fc95b623ff18d9b567aa37bb63e797cf0a41ac0e57e9a027c66a75. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GXH2J2521628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f794c507d279b7a9059f05845e78d1924240f2d8af02624a970a917e4e4d8e. 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/GXH2J2538407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4cd350b87f7795eae1f9b5134f3f2a7a678a953dcd2dd78fa1769f76146b7aa. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:51:11Z), 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/GXHG92520753.