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 0x51650cf20828eeba0b7cdb830d2dff89d14a3833f157bf4e64c7e6faab4de6d2. 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/8886cc54-4149-45a3-972e-fd9442249e2e.json and https://artists.proofprofile.net/proofs/artist/8886cc54-4149-45a3-972e-fd9442249e2e.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 0xcc1c3dd3ab0ebefb01ad59646913672f1e4052878ed28b4c4eff11fee6550ced. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:55:31Z), 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/FR9W11619289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e32081a5f79149f18277ac62259585e0633aeeb83ad2cf2030a2b158d48c85. 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/FR9W12118951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1172741748a1e233064c75ec02e38d4e5e9870f84e59be5eb91442bbc558ed58. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FR9W12042539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43945ff58e0bb35b2779c2887f7244e586acfd7c6e0266785a72d283efa61a46. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:28:47Z), 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/FR9W12042532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb4be4633c38d94f4564c72d631bc50369faded2a2c408fe47b9eb6b46f9e4b. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:17:21Z), 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/FR9W12042530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b02fa2cf23ab390d6ccdfe9bc204c1fb93bf6c18a0fd03bf19d8bfd19b4a440. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:43:48Z), 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/FR9W12042534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8cce21576a9ae20161abc4dd44bd100b8f3dabe35594b0a5c068020c212c24. 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/FR9W12042535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a232656a23edcde09d91861a4f92046af6a98dee4991dbeef5ece45d1c5088. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:41:27Z), 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/FR9W12042536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1172741748a1e233064c75ec02e38d4e5e9870f84e59be5eb91442bbc558ed58. 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/FR9W12042539.
Un po’ più spesso (Un peu plus souvent - version italienne)
Un po’ più spesso - Un peu plus souvent - version italienne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97673bf751de1b215e96ac231ecbc59eb6bbb939e60f463363ff956f07a3f1f. 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/FR9W12241858.
Un peu plus souvent (Kyle Dixon Variante)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98dc25748322c248334b8c1e6719260e48861e1a2b4268371634bd9bcd935955. 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/FR9W12243697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e32081a5f79149f18277ac62259585e0633aeeb83ad2cf2030a2b158d48c85. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FR9W12118951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e32081a5f79149f18277ac62259585e0633aeeb83ad2cf2030a2b158d48c85. 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/FR9W12118951.
A Tribute to The Strokes: The Songs of Room on Fire
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee392fc2114dec6f596c05b0a82fbc548df80a62d6e71b81ae0c0277b9268dd8. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/FRIDO2313462.
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
Au calme, les citoyens! (Vacances et chanson française)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ca3c16e0ba908a551d55968c7aa69559accf4b465d7f5e40e77638793b2635. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/FR9W11619291.