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 0x8ae37d034120462bc7088502b709ba03c9b7fe9092a3a347fb1fe2ebfe48af1a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d8229434-3991-461f-920d-246369b1be0e.json and https://artists.proofprofile.net/proofs/artist/d8229434-3991-461f-920d-246369b1be0e.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 0xf10122c0cc32b608c9010fcbd2a2fa5d6f350742894d431e7102b1403f5d1110. 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/SE66N2298030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a9c5c05f70f7decb442c470ce802ce7ae04f5465a20cb62208780fb18b0326. 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/SE6XW2363554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d09327d9eaaac921aed93a479007591a744ccc077b45733203685fc80518b8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SE6A92331771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163a3115d7f670787f322553faeac9a24864abc9feb7a285a96dd1dc48176030. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/CH7812551385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d62ba0cb094c674d4d9d45e120ed664cf31f980581cbc22f8608d1234b9d3e0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH7812352275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1d6f20f446519f43960adb185faf3ed29def3b6ec5b3d41f527c294b792bc7. 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/CH7812420657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865d4a7cd303f40971c06956883a6a81f4ba5251cc9bc0cff213cb12fb01451e. 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/CH7812421313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e924713df2f30057205ec97ad3b9e8b1bcba032795528585ff05194242e6e8. 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/CH7812425384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865d4a7cd303f40971c06956883a6a81f4ba5251cc9bc0cff213cb12fb01451e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CH7812421313.
Team Cali VS. Team Hassuna (Part 2 von 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6647fb0d72ec1e167b86f9e5ec9bbc6b31162b44035712a6d5293840c686e7. 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/CH7812423490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159a1b1d1b3d845ea09e5d970ee081cc06a5d7ab30da3f53d47bd160e968ccb1. 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/CH7812356949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b3eda3aa3a228608912aea68422052c29cb1d7f4be052a7b32091fda1f1f81. 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/CH7812356599.