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 0x4d9262c17488d54e92b92a0dd2cc62642861e61517b93eaae4d076d4e5e5dbbb. 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/b118d34e-0528-4aea-a463-08d75fa03041.json and https://artists.proofprofile.net/proofs/artist/b118d34e-0528-4aea-a463-08d75fa03041.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
High & Fines Herbes La Mixtape - Volume 2 - Saison 4. Parce qu’on n’a pas fait de mixtape pour les deux premières saisons. Ok, c’est pas très logique, mais on-s’en-bat-les-couilles, le projet
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 0x201567249e7972a68f60120fa88cce2312220ed7529249973ad45e3f75bcb8c0. 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/BEEO72300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9a98cfa89a9e468ee24483729c0414ff49627cdb48f27646f6231c325f962c. 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/BEEO72300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c0fa52a801d0a1b6527ab64117a9d94a3517e75ece492e6668045fc418fd2b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BEEO72300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4e336ca16c9eb669eb3a45306a8ce2361e3cf51dfb349a8ea32196b67ee4b1. 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/BEEO72300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad39009d6d82e2626c1dc1f4dd3992f45dec42f9d4c0e2090b0c0493f89603b2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BEEO72300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e36157d369a121a63d7fba56d3345185f2b2d22f44adbf056b70b56e4433dfe. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BEEO72300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb195c8b7aee769935399f80ea2086ab59305d2a9208d93dcd4d4981f1d05d1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BEEO72300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53512be294dc205c4587fbf38281faf82c2d94120ca708c3d13ae50cf3dbe56e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BEEO72300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c413865864971cc1a53cbe520ba8d2a74a44dccbaf50afe1bd2c6485a103bb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BEEO72300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10724efcb080e33ee523553849b77a1df2c49d20f31f546fea23e1f61fb25abe. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BEEO72300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9115feaaed2cc978c4552f08263e7ecf267fd61ca35cba7968f36c2beb284c8d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BEEO72300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed9e96abd5458826efb5bb68977b345f2103132b9794fe927ac5486dac74cee. 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/BEEO72300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113e2b7b6892bf958fef77d9cb09c137d79e924d94181130c5f30a5c0ca5ee06. 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/QM4TW2265594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c0fa52a801d0a1b6527ab64117a9d94a3517e75ece492e6668045fc418fd2b. 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/BEEO72300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7508995be36d825cb6c727624afa33ecc3e5f11e7fc5b0cf8094899aa0e634fc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRECK2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba2985ebc14668af6049fa60f2fd8a31b65e2411c8e8a88838923ff41eae1a9. 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/FRECK2300020.