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 0x9f24295f26c894edf223624d987ec96a37a76e604d606a5f2477b3b39a8ff59e. 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/5dc11a9b-0d57-472d-8e9e-672f2be500b3.json and https://artists.proofprofile.net/proofs/artist/5dc11a9b-0d57-472d-8e9e-672f2be500b3.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 0xbcc9a7bd21e24c9978100f6ce1ebef0e3721309fe5a6c1e0ebe926b09fbd9a44. 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/USHM22095187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f8d0af3f0fd9977ba8bbe95f8d8e1efcc63a31319d7dd02b6fd878b214eb37. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/FRX762063502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45bd0b23d900036849b2c0cc2cfc3a276238172e07d3ca041c97fffbbb4ab0f. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/FRX762063505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef46527c20092aaa3648268e9f1f247879226171a108e9baca6c4f51690bc518. 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/FRX452296391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f1a7dc4a6771a1a1e976d5b661110dc8fe64c838241f79f157c564b3b2a82e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DGA0P2374802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdecdf44c8317e347e9bbeb488e7dcf942c6677b39494b746b092b91fef0e6eb3. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/DGA0P2374804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1a2c977751da1787184972f2a456a298f209f85574359cfad52cf03d46f5ab. 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/DGA0P2374805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd80b9fdc373beb4106c42c61960f76aa0d06baaf056c74df9061f421dcff5c5. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/DGA0P2374806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7779c9fa85c03b1740e19738ced3cd91b0f55147a8575b94ede1c82858f4d2f. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:23:22Z), 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/DGA0P2374807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159f6f6f7a270d51c74cac94d367a8d370773a7258b4d0e9b8b2fc262389173c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DGA0P2374812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a12b43971ae047ec43573279930aa2fc591e7dc07fb40bb1eb7e3afac608d0. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:07:29Z), 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/DGA0P2374813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8598c6d305ac3ead8d82265d078aaf8a142175ca870ff15367ca610d629d603b. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:08:51Z), 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/DGA052559901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a1cbb53ca79cd57e71fb0d8212f277495e3df45f6873d85e073e89bf7267b0. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DGA052559902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cdbc4d126aefa17bc15db7fc77288d983aa11f1e00c89d3d232307c738e02d9. 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/DGA052559903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f59a49a6a34053b1d043e907890bdbcd9fee7166dec4efcfa7f62797f4bf9e1. 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/DGA052559904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205d3a8967b7e393033e7cb75d3838b8576d8fafe6bc25f0cf669b5652be8d21. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:08:06Z), 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/DGA052559906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d336c988a78c5f139946fb555d084f741af98ff087dd3cf8bcd2f2ecfdc56ee. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:44:04Z), 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/DGA052559907.