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 0xf70ea8c45d66e1046530824dd376eb3051461e815ca9fe8c062a036797c7d11d. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bc7be40e-57ae-4d25-9d27-e7bce53678ca.json and https://artists.proofprofile.net/proofs/artist/bc7be40e-57ae-4d25-9d27-e7bce53678ca.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 0x5046db1c9b1aa72b4143202d14bb06c622cab898643126398a5b706eb1013785. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GX4R52476150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24c2474ed41d2fc06dd67c2da11646b0a4f1248c11c2d9fb857105c1277ffb3. 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/GX4R52436192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309270e84ca74d06b1403eaa18d56d5d1fe8b9fe3ad7f9aa5726c252810c53f7. 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/DEZN82369370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151cb68ddf7f88e6fdfde61ca61297833dc690c8767409cba32b80a319480244. 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/DEZN82369371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670ca12e121c9bfe75a90955c60e3b4ea90f0049d942ddbf9ee70c6879438681. 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/QM6P42206577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde03095f8c139468e4ad9f00ad96e28f3415546aab56c1c5bd4abac4bdfa3c8d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR5Q72200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d685755dcb8f7b56db3dcf6b8582475cca026a8229ae7f520798f57bb77c014. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR5Q72200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd63a327f670fdf28f61e38d012803620d37d09f92d67abe63d325020fd046b. 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/FR5Q72200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269a76bbe144ffc9873e1bfc4f159da6f98925e3e4d045823f356684e0011f88. 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/FR5Q72200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457971763ac80ae202b00a7ab033d0e21868e7764e935fe9a7f8a531b05fef1c. 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/FR5Q72200012.
La vie est cool (feat. Otantik Soul et DJ Nasty)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb5acccfe76e401df5237c405626d813676611cb15396a85eae10a43f9e4922. 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/FR5Q72200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd269fded297974a7d80a84055ec5d0e364e85e8ca98d05a3cc978805d9f88499. 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/FR5Q72200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0eecdb2c3d27170052007d2196398ad5c3e7d23501039b64f66940695a2d09. 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/FR5Q72200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad880d653877056378e57002c83e8fc8b730e544e2b1f2916f4c8b3a4278fe9c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T17:37:29Z), 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/FR5Q72100003.
Tout donner (feat. Alexy Large) - Guillaume Barbier Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163a76889d61b4bfee6f50b762157f1e42d730ac5071d2622049d85cc687669a. 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/FR5Q72299004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea78023f4f0eb89e14abfba7a7bb40809de622536669aba69df0610fdda0f3d7. 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/FR5Q72299006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34baac75c491c6b98009def167fa5bdde0bcabb9bbcc598265291712c9452d67. 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/FR5Q72299003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24195e7ef04f99665f9b5c4e11c9bdedad45d07d97e2ee2b69a2bd24afa9cdb. 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/FR5Q72299005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4999261adbda378268b1b3715d15e4ab5b237be2438aaea6bdb3bdeb040417. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/FR5Q72299002.
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 0x3c0beb8a88057a28ac8ed032d9528736ea318b1de77571de4072f3355b5cba89. 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/BE27E1600190.