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 0x6a54aeba904b40e071105cd5bce1c4bf4fdcb1baf5aacf898f762352f00568ba. 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/d3c4b83a-5602-4ccc-a653-6a6513e879f5.json and https://artists.proofprofile.net/proofs/artist/d3c4b83a-5602-4ccc-a653-6a6513e879f5.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 0xaea4045bfe9630030acbf47def2d491b8789726e71ed8190c758e83c959226c5. 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/GBKPL1811051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a82ece710ab52c1bd1fccca0f79445e49ccf0ecb5fac78c18ba92c658150f4c. 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/GBKPL1811046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dfff5739aed371051c2030d77a1ed5d385c5b43dfcbae4614853814ba2c29cc. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/GBKPL1811047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacea4461b1cd6c69d29711902a9d67b6e8c9210bc0ff6b9a07bec5995edcdf51. 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/GBKPL1811050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773dadb5939d928060a3e7d8c4bec3d10c806663411be83f160f49b820812c6c. 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/GBKPL1811045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28cf98a47cd711ac06c18cf8de51ac37aa7431acdd0e6b87dc0393411f0ef61b. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:04:52Z), 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/QZ93L2010342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360f8bf936eefed5e66afdcafa4c2d5d61809e83d25c621cc4625b1c11b06b87. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:47:35Z), 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/QZ93L2032319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce47317469a44407cbd5692148d5835006f97fb5a60dbb4b6ecbbab56c779f69. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:32:50Z), 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/QZ93L2128641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a24c75c85abdf4309257c5f74f1e194a787c187784a9218bff2afb64552d52. 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/QZ93L2134363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b4a3eb311dabf6d3daff60d476df1f9f70f0a69d1008f39f9527d4f3cba165. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USDA12203054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576a76955df8d7d113f3275c952e5f79709caefda3864483969c97f8f7315b99. 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/TCACP1691026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc273cb858da397b5421fac84ebef081721855f5d504775d7bf1b6f692efbf8aa. 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/TCACB1477950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5765247f08a78b0b6dc7bbf54bd12df08d255b86297a271c2e970f19723a3c0b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:08:32Z), 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/SE6QE2378342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058bdae022c20a86a2306be5d14a6da5edd3261a779490c6e6eda3fd91798563. 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/SE66N2395733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20d437e1a05435082bd3bd6f37b511b2148c44a0bf35e780c5048e72b157c1c. 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/SE5BU2467842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31670a916708fcbf334a7041aab78a5026442d23b5f15910cac2bf867360a3fc. 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/SE5BU2467843.