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 0x152ec805b2c93932f317a57a6f67364e5e438a37b978220c8e2ab9eac58df583. 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/0ac68810-7828-4ce5-946a-8636f2942a9d.json and https://artists.proofprofile.net/proofs/artist/0ac68810-7828-4ce5-946a-8636f2942a9d.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 0x035e042883d680bec22f1603ee140a4971ba9f1a035018477ae33e2657374791. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM24S2103179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0e6b37cec3f8c7bb56ca0ad723dab7aeba8279c3b5a8658f02f686253d2162. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QM24S2103180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a041ea66b677d81a04d60a0443e544b549421fd2e29cc79508079af9b6a6b19. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM24S2103181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4f44a0ed45cca176101c750ad392eae7f662a2f3d38bbefb9f896d4326dbde. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZHN72368060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ef0a8c4e170f4da57af82e6a51183705c5ed0b783b1a056877e4f02ce58fcf. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHN72388854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec983a9f726d4c99dbcf399ce1febeac7b02ef921131c33884a7d3dbee6a22fc. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QZHN72387206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63f32f807d06befd18913f9ae89f9c0946a67f4dad6b604344ee3a4add9c8b7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHN72387207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5230dae9893dd4e8660f4b1b590f4df0f20ae9cb018cb6120704bc5401042f54. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHN72388835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8064d1ef7e166b0977b36ea6fa105a387f8054bc1fa09d825963b0b0975835a2. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:59:23Z), 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/QZHN72388837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ec50de14bf2284d4f154d6fcf07a5b0f053f2f38e104f8745fa66b4107ca9d. 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/QZHN72388838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96828429f4940cb73f5fede4461fde8c05535c6ddfc3827ead4cf37327a5fa5e. 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/QZHN72388839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60c0606d503f60b1f9e14dc63223ed1109a917a34cb58733ee8c69a50f625eb. 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/QZMEP2367819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea71ca423e8ed4392fde05973ca7495bb79d637aa8d9b28a28ba400e90374f6. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/QZMEP2367820.
Il était une fois... Les Prophètes d'Allah Sans Musique
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92eb1b300826318096f27c78c74458f50cfa97c27d41a159adb14de0e1939f4d. 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/QZTAT2303922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44bb1f5b68c0839907eb45950b69a3abb461c54e2aa6413a89c56d89bffd759d. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:36:30Z), 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/QZTAT2303924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b76207832f21852d25495a187cb323a21328b83fd0770bfd3f3a6713dfaf9f. 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/QZTAT2303925.