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 0x907b648515d2855a0b2900fba2f4747a872d82601c8cd1f52695516604caf1b7. 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/5f4dfed6-129f-4d8b-a305-a1e084494bf5.json and https://artists.proofprofile.net/proofs/artist/5f4dfed6-129f-4d8b-a305-a1e084494bf5.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 0x4e02e0da75eea0d3fab58cf1778244c822e97d5316d7c3242c3a3ba8facd781e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR10S1646825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5ae3e79eda51a738302dbcc6d1f52faaedb9dffbf6aa550fda040d16277cc2. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR10S1646829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88649f7fcf5eabc2d1a7738807b7ae1add3c331caeedf1bcd5f6eadc980f4f62. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/FR10S1646835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18a6072e5caa6242a55c17bbc25bef04f32b79a55e09c51efd820f7fb3c009e. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/FR10S1646836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0642f5603e30140cd2ef34efd0042aae19d97a6f1f81587662113a78aa854e1a. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:23:17Z), 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/FR2X41809195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b85b53b994dac707111e30a522b9ed55e9c89d57c1aad67de5ce7ab04ec722e. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/FR2X41809196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb8eaad22a27b886add09b27774619f432e14c602169ee89f4708a11fac0294. 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/FR2X41809200.
Terreurs de jeunesse (Démos et inédits 2007 - 2017)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449cae0d0bbfe6acd9396a3d8e370e2c3ca43681ce23e5776b5125e7ae9c132f. 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/FR96X2051210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ad5f4357d97350e658396ff782675b6e55f6f4a030e5121cdcc5e2ae3c69b3. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FR96X2051213.
Les enfants de baphomet - Bonus track - 2016
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1b18e549df19a44064d31ceb5c922ec39948dd9251dbe412501b6e0417f438. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/FR96X2051247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf012e02ac9c926f8baf17c7cbefab0102c109903b48fcdc37809abbcccdec244. 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/FR6V80920161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf313db72dea08f37479b74514556792841047e76ff5d93e43560d0542bf50530. 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/FRPHC1800047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfccd059930e061f23df76afbaeebdc5326bbeb070f96f63a81c2e1b3bd94ea26. 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/FR6V81578487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0971804e4892ea5ad59b64ee7c9410baa95dc3569974fe8e706ad9870f3e7084. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/FR10S1897507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c95b5bb3f6f130a7e656843b190a071a3c7c38f100de249350a5a1e6b4878c. 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/FXQ132100047.
Lullabies for Insomniacs (Bonus Track Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092f1b67fde660c5020dd49298b44f85f9529626e0797bbf326139460a806d2f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR6V81779970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0b2bbd047f031cec60ac666cbcaa655c530a21689bffbe9ff0bb80bf0a369a. 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/FR6V81779993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b22e0184fd4f45490e137743cb573c8b7c5c130be9b8a7edcc03b2d8c2fae6. 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/FR6V82077389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a8a66204d2f14d4127af993db148a54ee81247bdddceb00bf947451a50f2dd. 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/FR6V82077399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a64271365bfa3a508762e70dca4ae93ef421c32c2fe4406c6b7911669b79d8. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/FR6V80920169.
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
Flashback (mixtape retrospective 2006-2017)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5788366904e61dfa5fcaf963c542fa728b1b8d834a348fb48e578cd2a6ce00fa. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/FRPIW1900110.