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 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 0x3959d21f3076294ad9920075b1d9b042bfd76778ebfa4a94e6c58642e05e2b1b. 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/c25cdb02-d606-43de-bf31-2f3f595a329d.json and https://artists.proofprofile.net/proofs/artist/c25cdb02-d606-43de-bf31-2f3f595a329d.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 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 0xe3da3d6244684a95b948af65b3543154189ba4d97a31084ad62e920c4d39b3a1. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FRW590700020.
10 Tracks That Might Help You for Cooking but Would Clear the Dancefloor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8878b868ed5c80f3f9855c41b5db1ca449f83ff82141fba7b6306e878f1078. 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/DEU671900664.
Holiday in Panik Strasse Part 1 & Part 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8878b868ed5c80f3f9855c41b5db1ca449f83ff82141fba7b6306e878f1078. 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/DEU671900664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45c63c17696c2b862423e86fcf21a16e35b1ee3b5d9754a379c3427c05e3079. 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/DEU671900665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ecd8faf30e062c08a0b8df5c4750bafccd43ee13104e41dd45499ae070faa16. 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/DEU671900666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d467d87c03bf02fd233ebec10ffe3aef76a954dc817bd7a207e3085018011ff. 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/DEU671900667.
Fragments of Reality feat. Fantastic Twins
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d204291970eb56c6b1addaf0b8e9543d560cc236d7a38be69f908dd5428d04. 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/DEU671901938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e7feb48c490c236ad317e6a740cadd7245cf06384d0b893866ee305e5b5e88. 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/DEU671901940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b8cc52a92c41ebdb80fb26edbefe60dd0af4aedb9bb98fcd5662257f09952f. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FRIDO2113517.
How Is It to Be You? (Andrei Rusu Remix)
Down the Hatch (Cosmo Vitelli Boogie Dub)
How Is It to Be You? - Andrei Rusu Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681e5bb561af6b521413b57b966c814d0dcf935831cbc3c0ca70c708aaf84103. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/FRIDO2310209.
How Is It to Be You? - Cosmo Vitelli Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a741b61b18d100151df566e901df427302aad23a4647533718593be70dde269. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/FRIDO2310212.
Patient Zero - Dali Muru & The Polyphonic Swarm Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755b33cbaf695742a4a93d79b5c939ecdb14a4eae3832d160611a49c5575d351. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/FRIDO2310215.
How Is It to Be You? - Andrei Rusu Instrumental Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0df86d9bc946a2d2b4ef0e1e736f2c8aebfad33e3a088f5103e53f936837aec. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/FRIDO2310217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f29ba6ea40346482541a57296acbb187d6629013d4ec06c14fcb289532c0cf. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/DEWN71700192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c70307ed76c19525602de65b86633c6759d18bf56d560fca31c7ced51520b5. 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/DEBY40600238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d727e89e1050d8a3f6749dc1e9c9586cc1f1df3c6a9772de65709cd36e4e7b2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBDUW0300003.