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 0x704f3e16e10e2884014a20e78e29617dd59ff623c819a7d11947bc92507b68b7. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e5c24703-92a1-4b10-adc6-a587c94f55a8.json and https://artists.proofprofile.net/proofs/artist/e5c24703-92a1-4b10-adc6-a587c94f55a8.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 0x14811b51f4fedd74888b414e8d5a3a72d7ee4a2315173041169eedf7f74570cf. 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/QZHNA2421814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54207a396d3a42633d64a311b8a8ffa4298690c245f499ca877be16adcb97b6f. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZAKB2508418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e930d39197ae52d219ff40445bee8e4ad06b6849ffcbb7e763924908b9a7c7. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:36:43Z), 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/QZAKB2508419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba704a260f9c9edd46841a81c56e503a59781503558717911e4921e705c4c46. 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/QZAKB2508421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90accc07226e4614a87e9f7fcdeecaf53737360f2cf1d666ff5742158552d025. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZAKB2508423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65ce2167ac1e8b682572f2648d44241d1158fdfbb44d8dd0bccb6dcf8a99dd7. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:16:10Z), 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/QZAKB2508426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd260a7a44ec00eace96f6869ef9768875bf61f1a19afc4a35c7b84e364a853e8. 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/QZAKB2508427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7230abe8877cd17420829c0701fd4c8398fef3c9058d3c5d809a9658037b2bd. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:31:18Z), 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/QZAKB2508428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49fe4c651464339a467ed91c8d0063a10f2df1f2ad6dd87996d312d284c6029. 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/QZAKB2508429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d12ff3883b8e500df79fbe10cd20bf7a62265121948a187829f6926a5a5673. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:52:15Z), 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/QZAKB2508432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aadb3d24e8af375be7efe2a3f83ca7a8af84bf45d9818f027cc54a7ca8fb7c8. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:24:13Z), 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/QZAKB2508433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fbf69d3a61eb20e89df192fe3aa526007e6fa8284da8f36cc4888096f999617. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T03:43:20Z), 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/QZAKB2508435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1a8bd50275ce31d597d96ac6e7d9dabc729a97308e4f433480baaeabddc340. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZAKB2508436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1278f96b4fc7b2993d932ead5d9ee67d5a323bd09861dd72929234fa356549fc. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/QZAKB2508437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4483ecfc8380bb12b8a1ce5f60ad24cc6b1e6d63173952f8dc48aaa34d24b8f3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZAKB2508438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa506b0d65b81d954682e36aae9241c0c6656b3a1b302d98e6997e89f8c3406ce. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZAKB2508439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9e07b198e756f177bb0ff54e48163c04f1af82c29f40caf5fb01391a936df6. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:16:46Z), 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/QZAKB2508440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f53f27e4d0fee3ffd5c302920fb3ca59afcdf424974b149b66867730c69301d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZAKB2508442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b11e288c1a35c7730599807ea3eb8c2a0663f4d3cc0a1a1b36c9f7f93d1c80. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T08:54:21Z), 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/QZAKB2508444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2a37b95e133ace6e6bb409d3bb96f27b52ae1d338f60e17cedd548ad2e07cb. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZAKB2508445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ca36044f9fd02b35fabdfbc43f29d687c920f1a80f42b0f34b5b2b43aee4dd. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/QZAKB2508446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29331d582a7a72167a1af52d6c68257099d8a8fe7b014af98596227e6cd8d451. 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/QZAKB2508447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578f1f26972b7d85904eec8bf07a20090d524d5ec09df8f3eb675be5223bf2b5. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-21T08:59:20Z), 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/QZAKB2508451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e40811f7f16efe234893e9fceeea7ca13c010202bf73c8aa0872f74635d751d. 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/QZAKB2508452.