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 0xc97e712e5c0f0ee2a818573cd81bb203f27efd2ce2c55a9f73b0636dad658c3a. 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/452795c6-15fc-4be3-ac82-ff59bbe1be17.json and https://artists.proofprofile.net/proofs/artist/452795c6-15fc-4be3-ac82-ff59bbe1be17.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 0xb70fa136d4a690c059376c2698841e407ac19df83a34475b86c0f1aed8aac46b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CAA501332903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728139747957004b2e68486910bd63b519a08801dda5c33c8a6aef26f04c0099. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CAA501332907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65fd7350a48300a901f186f8f424587b38a6f417d075a8b068ae662604ba52c1. 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/CAA501332908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32093398c6cfa33ead3e0b98d377f462f63054132a901308ad4062d9288e6822. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/CAA501332913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7fdbe94371def7a76188858c8afe5d41678f10b062ef405ab4f1ea5936d78d9. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/CAA501638302.
L'horizon c'est nous (Chanson thème de L'Académie) – Single
L'horizon c'est nous (Chanson thème de L'Académie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe93529b24d6de1ad5c8382e8aca15c0dfe8d6b9bff4750ea49ca2fa8bba83c. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/CAQ521814001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7312a49846230f7ba9daf6ad850b0bfc930b116e0c9dc50696cc0e7ead3b2a. 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/CAE1A1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17f60c4f6f3e77371c7c37a2f6a2c92d19b305aba1de7b3280b23adc4d4e9e6. 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/CAE1A1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17f60c4f6f3e77371c7c37a2f6a2c92d19b305aba1de7b3280b23adc4d4e9e6. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/CAE1A1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed0c8ed23d8030a5c994972e4adfec12aca072fef1c6eb04354ba995b4d8e0d. 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/CAQ521817001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc29739adb86bd6adef6c1e175591da9a2b36c01286fd2047ed9433985f6101a. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/CAL642213001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58322b7e439003391ba2a69919ec4cdbdbbf395fa3cae4a7af66a9623ff1887. 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/CAL642213102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6540ad1aaaf920b150b7c3e537c4ba90c98c1c7d86c00314683a017d3cb0a2. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/CAL642213103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc921dbd8c62c34dce17953417899f01fc57c7c6002a1a46d8644195a22bde7. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/CAL642213104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ed1b855d94da6acf69d48664f4ae560e536d958b511df00eb1688c4e8bad75. 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/CAL642213106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aaadbdfb8bc8d8bafb2eb7999d2f65a2a95c8b6091e91b20f8d0ff00927c657. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/CAL642213107.
La lumière qui brule et qui brille - Piano solo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d7f747c48eb1ec9947de705c927604a01ef8b076da950f56434977143fb87f. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/CAL642213108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422f3bd09c33c2d4a34b5263a99cc629360b3ceab978f7ea06a727add326ae02. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/CAL642213109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b7650b9c2faad3d493ccc8b6b88161a928b76cc083f78ddb450497d8b5d429. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CAL642408001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9356b902744ad5b852624184cbe75dc8836345e3eeb04a821c07817357603b3f. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/CAL642408004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3435d0687b4e1169b8a4e3cc44bb1530c63ac7b801d1a159f7910c7f97076c34. 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/CAHLG1800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc313a8b005f0cf242bc9292975da1eff2b9eb4a514a82de8060807e7136736. 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/CAEB61600501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1fe487210ad2970d9f7d9a5ac401c41fb8987cc5173e32a75b35d8c1149cf3. 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/CAZ521733107.