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 0x27e7ad261f9d3201376f4b80cd3be227c79a697d3fe6e5fd85e9838dade40a62. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d044df94-1f9e-40f7-be39-5055e3fba900.json and https://artists.proofprofile.net/proofs/artist/d044df94-1f9e-40f7-be39-5055e3fba900.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 0x3c7cd4f81853aa215d7628c9b08ed1940d6a9ef6de7596599005578ac53240c8. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZTAY2437577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18177385e74d65d400d863251204c9ccb2afbc7f56f9602f623ffcdc81235691. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZWFW2469220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6191724b3569244fa6221a8c2e6fef0195f6f3a3ec18e5de3868198134c89ab5. 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/QZWFW2469202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab00be1e734ba857a7a09cb3bb2c5915e2230c20de52253863a81b519694227a. 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/QZFZ42531210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0de6556be428c908c29ea1fc333e3eeb0687e5c2e1d88c791fc9483cde72904. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:27:12Z), 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/QZFZ42531208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44401a37abda8b5c9324152e296e22340f4c9a98cf0e511fa44fbc13e8641085. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:49:48Z), 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/QZFZ42531209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb904864930076794ea98b6e8f66d1f22c627bab30d4e212c403b7bc830b9b769. 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/QZFZ42531206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c845d32bd190f9f36794f483d095c51834574b34a4bcebdbdf60319740d97cf. 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/QZFZ42531205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf044b0e048ebfc231cee1c38fa3fb355da1022c7285f1bb1155d90fa5c47afcd. 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/QZFZ42531207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932232487eb9332ad61372b88d1fb61c0d9803dbae0d4a738102fa482ddf9f5c. 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/QZFZ62572467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84779fdb07d1505a1d3569b81970db6e792b83df5352a581f24ee5109ee50850. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZFZ62572464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68aee36d5768ae300a9b3e0a9550ebda31dacda6a4c107e6f50b2585b9887c36. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZFZ62572466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5480d2c6bf6596f5b7a5d6ba542f173229ccd76e5b9cb735cea3145eebac3bb. 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/QZFZ62572465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca76ad508feef76ed68ecc43af35bfa5c0d382c251f09a59baecfe8f68614805. 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/QZFZ62572441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf992502bf57b4b3f01a51796802c4ac0dbf5f9f7834c82c860b5eb32482e39b6. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:08:03Z), 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/QZFZ62572468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6315289adac2784877b8cad097080f550f09102a242e7c09062acaa9ba90d51. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZFZ62572462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb54cb87a0b855eef310ba398b2fc525c640a6e1539dccb0ed6f870ca3989659. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZTB82579163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a81b15a75d3e06c1d12668c6df4d6d17b2cf734ffca2209ab7999569efb809e. 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/QZTB82579167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348d531eedc650c439d641d0ef9e3f0603e3a8b104cd50e27ab026a26c4045e3. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:07:27Z), 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/QZTB82582944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdffcc48785c90dadc02b1a22460ce3c3477ebb2d2cbaa4a7028492d5491b936. 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/QZTB82582943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79a7afdec49277dbd861922bc344763b56524d1ea00cad37a9b091f4b9915e1. 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/QZTB82579172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8766781b34e1a6385767d16db943773a85bedf953a52bd49538e4d94b36ea471. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZTB82579162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69247aa328660152253c2ab25d429be2f243090ee3f3e73443f464870b5730a2. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:57:08Z), 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/QZTB82580819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8e35917dda132e8dd34f970bbd6f6920c2f64f0818036860e574a71835551f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTB82579187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eac4b3599cde9ef580045c913edeb9aa59472599062c200ca5898c1e13c3e66. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:55:13Z), 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/QZTB82579189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6452ef6a5a52497aa30c92252a2789388401c36a6c5b5f031c6ed753d505ae1. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTB82576531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80680d2d44474b1915247bfb1032e4dedf130ba535d0f40fa7b7e722ae4a6ea6. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:08:54Z), 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/QZTB82579185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667129ffbd16291818eae321943b25852711227b2d6ffa5f04412c378a0ed009. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/QZTB82579186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2790afeab4af6e4b2fe4785d701b1b5d0af11d73683f4c1e60dd0cfca5ceda. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZTB82579188.