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 0x5abb3fb5cdbb1699b7ffeda0265d85b1a201d527ec740cc4272d86c6dc7bf0f7. 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/59c638aa-b77a-4098-bd0d-a030ad891ad4.json and https://artists.proofprofile.net/proofs/artist/59c638aa-b77a-4098-bd0d-a030ad891ad4.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 0x4bb48f431942a15c7902408b0dbe1dcf982cffbc6c7839449d594e1e5d7b582d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNJV2222918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9861373f379d7e8037e7edcf8930d9d0de4379389af06a4473f992de702d04. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHZ52260720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19cc24202a9325e8597418dade2a809c0e85e703ba52605a8faaabc6ec2867d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZGLM2291341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b0d3521f9b8d23cdc0f95b74fd593a6a4796d5609e565586e1dd144ae2a1dce. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHZ42227719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08526d3c0629d2259d118c72af6aca4df71d9b7b6553771f1802b2ea24cdfce. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNJV2222919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92fd1b75f959964283c535494de27327ae08b95fe258aa2a7bc454a0e58cde9d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJV2222920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770f13d7adbc7cd7ecb13e5f7656105e2271ddcfec67640db1322785ff294840. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJV2222921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da3eabf1cbc3f4c6d49c8e4f0792a239736c55546d47aa1ed4c3c6d8760eed6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNJV2222922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf2e55857f15383de7c3d4cf0bedacd45135a8fd87f0eb93744a7881465fe08. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNJV2222923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ae041c946e311945cc5d56898f93c4beacde3020c8adc3c30633ef6c0d39df. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNJV2222924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fca812e1edaf43f4274ced1f6e28904c48727fae429bad18fbf4f39fe0ebc68. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNJV2222925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c228f22700aa1fd869efa79f63b7fb2e9515b3357196c1eec55ea9835a93d16. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNJV2222926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c42f4ae427b8d4eb7f15af9da60c4e1c1e358af886b12473a42736895306d0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNJV2222927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1895d8dc69e3ba024649eacf04091cb992d54110bb4a927e467bb9bde82f0361. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNJV2222928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41db44f59af11de9256970ebda517a7271ac22f4ecfb8c19bbd5954458f8b88c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJV2222929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a8b0b257ba72c967a839c8a9bcce1df7711b809d28aa5a4f10f0560086e88d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJV2222930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca508ffe9f1788a4edb574210b6766beec1629c1f0fcaee27807451991f0371. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJV2222931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9861373f379d7e8037e7edcf8930d9d0de4379389af06a4473f992de702d04. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZHZ52260720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b0d3521f9b8d23cdc0f95b74fd593a6a4796d5609e565586e1dd144ae2a1dce. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZHZ42227719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a078a9884c9e2041a24bf9ad5a6b526a6ec834fac9d99de8c4a10ba1c1c063. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZGLM2259755.