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 0xdf9152b621fd92ee96fb78169dca7d4dba588fda2db43eb056e6a53940dad710. Chain 2 (Bitcoin): anchored in block 953782 (2026-06-15T12:13:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d3acf268-e369-4893-8754-1fae7c16faa9.json and https://artists.proofprofile.net/proofs/artist/d3acf268-e369-4893-8754-1fae7c16faa9.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 0x92563042cf8806736a51f2feeb6b0b62192b816b1ae74764aa1c122d37d8fba3. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:19:59Z), 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/SE5BU2464319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeeb3934d5b5d33c53e34d49e083c734755c49bb3cda1d9c57d5eafd6fe3f8e4. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/SE6HN2464113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed5defa9b95ef0c04c0eaef33f0c2178ab01f12efc57200c9cb9b2da32f09de. 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/SE6SA2484819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aab7c1267117c2f3e51268f75ca3af8c4e91ef670908bba3189b19918f182ff. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/SE6XW2400830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0d1911d6c06d4b3b9a97b60b88672d23772f7f7f24797668ca97476ed9e70a. 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/SE5BU2516601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0142add426213180fd1618ea070e65bcbf4acc0843d1c971be9809b10e787c3. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/SE5BU2594961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f33fa389662641f4762c2da7b9b9e3cde09d15fabfb837f843e4ee498b5d6a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SE6XY2534535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7342c0f23abcabc816b7432ee2eba7473f324c45e7d45b60b9548ad0d49bf9ff. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/SE6XY2558694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dda6b579994dfbc88983b382e55b8de7917e806889156f808984f27eba72f26. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/SE6XY2584103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f33fa389662641f4762c2da7b9b9e3cde09d15fabfb837f843e4ee498b5d6a. 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/SE6XY2534535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0bf3015fd3ce96eb7157477243587ba3c5e118c41c50eb2b37c37b80303f081. 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/SE5BU2564665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99e2d1e7ee77742e122d82dac75d5fb349bea69d8b356b6a866c578b4d26ec8. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/SE5BU2509838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08bcbebaf3c84f91149a14e0bed973f09e4022936b3a1cc1850d3a28757883a5. 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/SE6XY2584105.