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 0x3749ce663d6c1e654e4568f6d37dd451c7febe62f7da2a5b1a56509fdc8cfafe. 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/609e9004-e6d0-420a-a822-199a66954de5.json and https://artists.proofprofile.net/proofs/artist/609e9004-e6d0-420a-a822-199a66954de5.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 0x33ee5abcd249c983114b5e2ed21970ffcb14249432d7584bef2259e81d55b960. 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/QMEU32008257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b4df9da66608a72ad6ff46406554a1f0a555d99404afa1e573ce1d7c58b558. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMEU32008258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d2dc89d6f59186a71c98f5dabb1b7ecc7a4a01ea16e0e5f13d3ea4c6438b03. 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/QMEU32008259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b490be8433b89d57a805797ac3e00a81793b01cf3c308461f16efc8a361ebd. 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/QMEU32008260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3728b76761dae59599d8ea7cca65b5168d77ddb65f62780d95db0cd921aaae. 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/QMEU32008261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5807f855126ef1cab6d0c5f2973265b23bb45e37fb47e70d777a173db44bc397. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMEU32008262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce982c73b9ea7f5319182b3265777b8f1fcb6a3563dcde599a9579054b3f9ef. 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/QMEU32008263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ebd1d032aadadd86ba5ef73bdb6779931a2d819de9454d6a5b51939fae0ce0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMEU32008264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7329568972fca25af7f526252d9163837b435053a32d78da0513ca19c091f840. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMEU32008265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85894112e5fb600b97dd7d270ff20c28f4392d483652ecef1047b8c5e130d8f0. 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/QMEU32008252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565cf4e1f67b2d7224e359d675b00b059cf77ed5f7083add9a241fc26f4819cc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMEU32008253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59cb187dfdbb3dc01872d09273dcea4c4da711a4331684d5674997faf57f6b2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMEU32008254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1513dbce4006119936ee3f9d145a432630b694e05a7a23fddb2e6d17379c3e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMEU32008255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549904645e28366e093ff9bfba3b39d68cb5500e5c011cb21238fc8f429b9472. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMEU32008256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585a01ad7c59bd8e9f1522e9a2f49cbeb1c8ae59502e7d848fa74405cce13373. 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/QZTB32267511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b4a818d33f5d14cd7af71078151cff56f5e753177b07489e56e1a94a77410d. 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/QZK6H2235462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ee52fed9edffc3818388d930520dc5416ee4ebc44ad81c04ef01f337f9b157. 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/QZK6H2234630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9277d6a874185e028874fb56436a229e03934cee644e00a2b4f90b284e8e0753. 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/QZHN52117838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc9901ec0aba0277b84870bb658163a93958215168f20791dd6c5e4d89bfff5. 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/QZES62062133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567345e06c996ac6276997e60a7b0d9ec989167a48af7784ed849d7303177ee3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NL8RL2429378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f3a662613826d837b9c0f949fccccc784fdf3a7bfc0fba2d20886f1c483883. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NL8RL2429377.