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 0x4309897ebb4b8fab957908f194e1d0450945d3fbd1815a9c6fc6417fd7855b0a. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e8129094-60b2-432f-9950-2eda2dfd3114.json and https://artists.proofprofile.net/proofs/artist/e8129094-60b2-432f-9950-2eda2dfd3114.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 0x1b2e8ab359eec81976a95ed21e0639bf518fb70aa99b4fa87de1a75eace929c4. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T17:15:58Z), 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/DEA451408060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8250a4be86716ccbe395dc13f135fe4dee6066adb3ca9dfe70566bdead1348. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEA451408070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1832f44622cc1fcea22cc3bc46feb4fb91723ac58a478b4343aada237990f5. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DEA451408090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19aeabfaa482d452a86617cebbc9b57647ce911d8bb8b378dad78196f4b0e2f5. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEA451408110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436a2b1cebe771c96c49f41336a0d6429b1b8c9a7fe40720c5dc930b9ac7781c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEA451408150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54966e98a60e70488a69af76ff2cca96305f4edf7eb1b4c4ed2fe40d71c1ad76. 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/DEA451408170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1cb48bffb67f87f423b2eee21f7ea85fce3a14598730968a262e3265db2cfb. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/DEA451408080.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759fa1609c9519d74f05615e00ec2ed5412ced008ea3e5f3b936f6ec2ae58f52. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/DEA451408100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090cda98cdef3a2191401a784c08a42986a344da26ae68a3214d050564f5e8f2. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/DEA451408120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cff6e74973d2cf68c2bd31c0e52de9ae7faf2c089ec9443e6a4c53f3aac14de. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEA451408130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d43c33527f798005e47e2ec07c410915d369f5f6bf9c2840370c64403a21ed. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DEA451408140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5cde3b7da7e5229cfce4077d2e13d84f3f887d288464774615a1d061f0a115. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEA451317250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf985b7b84a58d04c0c0d0288dbce7b27f1f1162239f4058c8aeaef4813455fa5. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEA451317260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b04cc932f7a89606765af102993341b44aa7cf8ac0b2c8580ad2315351ef43c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEA451317280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c0647bf0e37ea5c2a5ca7cc3d32938a22f3f82bd8413acc64b17684628f2bb. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEA451317320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65eff74d22ee69610af5073d4173b347f4d021a052d004bd4ca57077dfc9c602. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/DEA451317210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa391bdd63d99fafe627cba9dda092d92f6f3a2b0006e559261cb71f2ea3f2ac. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DEA451317220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ef7a301b8cdb5055bd5579bfc5f27344cf9df8849ec42f558b5f9e1e79ea29. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/DEA451317230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57abf8e2711d677fa2d24a95f20dd2c9ede9373326e28ac9111f901ddbcbe7f. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/DEA451317330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da7e1ca21d53c244a513d3662ba28ea7c280fc420ad2f064006f6eb73ec6745. 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/DEA451314730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e04550d5fd7531ca6d8fbd70d74cfbf560118565a1a8d3440109743df4ac755. 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/DEA451314750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8781e90f91abc77dd57521784795548a5c8d66e0f1646c0ace93340e40e37d55. 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/DEA451314760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16e8f768ec5362c982f53a9bde317ad681fb10b4e7f91973c00a83dd7ed8add. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEA451314770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67aca4c170825229489d8ad0de42a553d35c80b97258d7dbd89d5707dcc9bb4f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEA451314780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aac33c6ac3a8d61945dbe231f6b99778a1bf9ffc9ca6135eb1f332948577750. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEA451314790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2604284eb489472eef2610b192e68881accee05b5f1187ce5c0d2f0fad3f32a. 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/DEA451314800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b46505ab8475cc2682e63a97fa4465c3121c6378c811ca823d742d63b77f498. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEA451314810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b766b20174e508329344cd8868dffcf4dfd34b5ecdf0f331800bcee1dd2032. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEA451314820.
Running Out of Time (Live at BBC Radio 1 Session 1983)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd121eacd11b2eb832549c2875c5b6c3ba7c27180ab551c8131aac8f6ed8e05. 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/DEA451314860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab130feda46e3a6e9b72d1e2289ecefde45e110bfeb94149753acb4e0fe66f01. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:51:07Z), 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/DEA451314740.
Ready to Deliver (Live at BBC Radio 1 Session 1983)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18da34f7b4bcacca37bae914579d42bcbb85db93781ac0b64ea7353cb0fa920. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/DEA451314830.
Shout It Out (Live at BBC Radio 1 Session 1983)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedccb601dd82ee57f14154bee944419bf06fac3b2ef9d57152222f07f72bca02. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DEA451314840.
Mean Machine (Live at BBC Radio 1 Session 1983)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b689a7976f410efc28ea87678a75f48ad57f79296b7c85f5f064583c582853. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DEA451314850.