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 0x343c2d6ab924507942ce5b5762c7fa226e8c8ea9a6563f7ae843ef689778f32a. Chain 2 (Bitcoin): anchored in block 953600 (2026-06-14T06:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0e47a731-38b1-49bf-95e2-c2bfd5ab7e0f.json and https://artists.proofprofile.net/proofs/artist/0e47a731-38b1-49bf-95e2-c2bfd5ab7e0f.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 0x4f310e6fa1aaf7afe7b785c60d848ad7a9304f275a49c4faa160160bd0c7a6bf. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZES62364968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bee9edb738a3c964dfb318b99dbabbed05913d419555d6a66ca92bacd106a39. 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/QZHN82317562.
Afta7 Fay Bel Tasabe7 | افتح فاي بالتسابيح
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f14f4b291acb5fb0539d68a475a41752b913961d16aa9d9791dbd016183eb0. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZHN82317563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c82323154dab320307caa63abf1425c77e4b44217d2ef97688a801e8539bce. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHN82317564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204da8eef1c85c0e6dd4f1fa11533ea41266d98e10cbc1d736a75301e2687210. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZHN82317566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52200f4e0728015b4e20d9ffbca63226a98b0ca346fcb4a8136714e26adbf1f0. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZHN82317567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657b28526e1b699afd5f62cb08bc6f435206f976706b54661b93c31e41f2f402. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHN82317568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70da8ff28f427db1694645823bed7a363d5c4be762f88e4e709bcc1a4d977032. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZHN82317569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc517314010b12bb0a886574d3c24d7075f31b5cb492ff9c038a29139701abcb. 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/QZHN82317570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44395469101f84c27be2549fcc332f317573f55dee6b48775df44cfa14845c29. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZHN82317571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaac1ce10b6736248ccbefcbb2401e44daef0a39d1e5d2f91344f48e53068707. 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/QZHN82317572.