thumb|right|Alex Oxlade-Chamberlain performing a rabona while warming up for Arsenal in 2013 In association football, the rabona is the technique of kicking the football where the kicking leg is cros
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 0xb0893a942cd86e8a383c97b7aefecaf6f50abb782c06d692dffeb508853258a4. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/af23021b-8fe5-4e67-996f-6e4078bed4a7.json and https://artists.proofprofile.net/proofs/artist/af23021b-8fe5-4e67-996f-6e4078bed4a7.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 0x64635e3ce92cd811d56635f29a9e4fa7866d756e5152883b3a6b16627342ce1c. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T19:54:43Z), 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/QM4TW2138262.
Küçük Şehir Büyük Hayaller (Slowed + Reverb)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6346ab4079e5304febd109eea0181523d9d9cf39fe5f13997105d51bf1c9dc69. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:09:51Z), 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/QZZ7W2430726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378d268c7274bba8d80f4aab8977cdfdcb13e220aa494b1b4465a95d17cd5eec. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QT3F22454978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88bdd5e2e763cf6fa713be76dd33b539981594a04b74026911d7cd8ca1dc8fbb. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZFZ32551550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b39c6007243d7431335539cf4a702bb4078129c799a3f5e35332bfb203430a. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZES52511572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238f09d0303b50000ff76b707e3fa4ac2417836022e1563f6d3ab19009df59ab. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZNWR2544322.