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 0x940262038684f39be2cb044a9a1d49849bcf3679ecdd82aa382c00193805fa1d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a13c4121-6344-4935-9532-af7edb90edf0.json and https://artists.proofprofile.net/proofs/artist/a13c4121-6344-4935-9532-af7edb90edf0.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 0x3dc10b1f4e0e73be51e906de7d9f83dbd6f3cc1444c9b1fd2d48e0c1e986b870. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/FR10S2047343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5cf4cf88f8419142bbc6cc81af59e89b0485405f59c395fb70a58af05e3aec. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/FR10S2047345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0988068a8c0a6572dbb22e2b1697d139798b83a452096adc4c3925879cf044. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FR10S2047346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c069f7f7feeba1b0d8e7ef977b9e6e66b798dda1c440cadac99b11178a489d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR10S2047355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d68bc9530b69cd143d1a7796e8394800a5429512f7c09cfba77af2f9388985. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/FR10S2047358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b37d26f1fa512d0aeb2eca73176267966e04f9f9741b59ea61f3132b108404. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/FR10S2047359.
Un Sourire... Quelques larmes un peu d'amour / Les plus beaux jours de ma vie (Original Soundtrack Recording)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4fd72eeabf71f8a5b0b9724d578146de39f2211ac903bb70f134daffd8eb2fc. 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/FR6V82618516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4fba05ee9ed07cc855f83511be3f74441bdf3cf881adc52b546ae6fabe1b00. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR6V82618527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272bc81e65572518706f1ea27e0a72f523ced8005b32af7b1d4226367890cac9. 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/GBCLQ1700046.