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 0xdc20d31db02533116924170382324aecf0223a48c35686b57ef45b5e0fe7fecc. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/839485ec-18bc-495e-9a0f-2ee5692aec70.json and https://artists.proofprofile.net/proofs/artist/839485ec-18bc-495e-9a0f-2ee5692aec70.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Empire of the Ants (Original Game Soundtrack)
L'attaque du monstre géant suceur de cerveaux de l'espace (Bande Originale du Film)
L'hypothèse de la reine rouge (Bande Originale du Film)
Tarim le Brave contre les mille et un effets (Bande Originale du Film)
Le Jour où les Huissiers Envahirent l’Univers (Bande Originale du Film)
Rien ne Peut t’Arrêter (Bande Originale du Film)
To Build a Fire (Original Motion Picture Soundtrack)
Safety (Original Motion Picture Soundtrack)
Astérix & Obélix: Le Combat des Chefs (Bande originale de la série Netflix)
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 0x8a803cf79f04892650d16aa8f29d42e9d4d8f13bce1ec619df4f70c43efc6830. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZ8BZ2513041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05418962f4114c6122e58bbacfb131542d2f643499c4093c5294303121ec6f14. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZ8BZ2513042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac304b2d71460c360a0175b5a22d0ad37860da18f0d5ee5c3d619cd2a6f677c7. 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/QZ8BZ2513043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2661ff8da58cbca01f356b950ece86c594c946754b79dbaae1479189faed1377. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZ8BZ2513044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba9dd829eccca531ac5e4b176cf0c0d2ac528e9219d493fa1c2c6304b7e9c4c. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:01:45Z), 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/QZ8BZ2513045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82caf24c4dab90c0fd6e6954adeb36be2abd8850eb41f6559a244af875f8d82f. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:16:52Z), 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/QZ8BZ2513046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fca7726c94f34816e5db9cd1bae582b12e8bea3566cc2b00e4aa28e4aed58bf. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:37:29Z), 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/QZ8BZ2513047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d858c3728a56ed380a0e286979e89cdf34172f439ab5b66ebebc60f7fe5062. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZ8BZ2513048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4725827bd0739834140273bab393e0c7478db5c9e6cf4b247c946c0d753a321. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZ8BZ2513049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fda4866837f6e3a3c2eaa841483e473027e5edf80b6c701f44004de8bfad4b2. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZ8BZ2513050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5cb69f1d3e9f65e9f09effaee91a86098b4091b611dea1c111d7fd58c945589. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZ8BZ2513051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339dfe3aec7e0cb1fddeddd9534357e28df148b8e27f695956fff6e3138be15f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZ8BZ2513064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bab25fd90a8bc72625d71f681657a9007d9519c9b797db77b3996f2ac30a06f. 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/QZ8BZ2513066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc8a2df7865f1a4a66dc4dece42dc475eaa534e84a5310ecab646f7674d2750. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZ8BZ2513067.