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 0xef7402e0fec3b79297568737552bf9c3fa54f855d7df0345d15d0fcf761a73ce. 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/bc3bcfaf-bc0c-443a-b559-f547c65f3b6c.json and https://artists.proofprofile.net/proofs/artist/bc3bcfaf-bc0c-443a-b559-f547c65f3b6c.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 0x43e352bdf627b0205e25b3cdfeddf070a275478a9ecc5ccd9af214ff96ff5aee. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/TR0490600337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df4dbf97e709408ccc6d0208f08d44968f772eda51624045b48b7499a8a46ed. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TR0490900823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cab2014adee6e831a1d7db85d18358493888c10d69815bc5f4f7c96261916dc. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:34:25Z), 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/TR0490900824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2728e73b3a8375ea917abdf0d054b5dcf35dd4e5a04a0a1e21c08f6ee8ad77. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:59:20Z), 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/TR0490700599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4fafa763f8b29b831dabb827730ee76ff27f98e2ac455132266dfe3097479f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:56:37Z), 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/TR0490900828.
Her Şey Bitmedi Bitemez / Koş Bakalım Peşimden
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f04c668d9a0c88168969912b853bde6b48f78328905ee7c72726a39818ad8b. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TRAJY1408108.
Dibi Dibi Da / Vah Bacım Vah (Saklama Sevgini)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182550d43a4f7cccaba543c94d7630af93e47cbaadcfb8ab92ab9bd507b80f8b. 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/TR0490600168.
ALTIN MİKROFON 1967-68 (Türk Pop Müziği Antolojisi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435cd9f1ec667f6ab35d065c3f306d514adc918507bc341d016a761277403330. 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/TR0010500621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80fd91b49ea006be51d67a3759da73813bc05a3fb977731b92f29b0c0fc8f985. 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/TR0490600255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95fe7cb28ca697dd3e2061b727d75e9de1ee1e83092acbfed745406d56faf7f. 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/TR0490600154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182550d43a4f7cccaba543c94d7630af93e47cbaadcfb8ab92ab9bd507b80f8b. 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/TR0490600168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db85f068762d00267772beea34bf931c01a7fa4cc0e104f28074759ce8e246b. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/TR0010500626.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch