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 0x6fee4c33e103ce9c834ef2ec2b4645adf4d5d03ee3a633d37ce2fbbd71012bd4. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/431a12cd-1c9f-42d0-b3f2-0e24d78bb421.json and https://artists.proofprofile.net/proofs/artist/431a12cd-1c9f-42d0-b3f2-0e24d78bb421.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 0x644579be6c21ffcfe21afb3923949a89f3a1b4bd4f22f6cf40afed5ac9705577. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCAFX2151616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a8ec5ce6e19f8719352f7d7b37c2153e4756baef9239276b481598204908cc. 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/QZHNC2146759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebedcbdb55889b7cedce472ef65629fc83665b6f180d7a9c3393c5fc05fc82db. 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/TCAFG2060653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f7bd91f41190881c24d1834dac93cf0d73177858524b3b99146ff29f6f18a1. 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/QM24S2009038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa6620841f68da3bce5b8e488a304d2046f06a64306c34f51194a3b3111bbf5. 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/TCAFC2044116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed1e114ac76acf48670ffefeaf5edbdc47288c32e65c1b865c6c526e95921ad. 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/TCAFA2046963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b4a4af7b06cd13d494ddc8524585cb851126a6f56c37c9d34e378aa064928a. 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/QM24S2006851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe098f0917d4cb1d02d04fa9cda615b65bf66895988b04ffeaac6f293e402d162. 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/TCAEX2009410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd3063f5173acc478e4f595eeab2ea5032031c0f4fd72f144a49bcaa9951fbc. 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/TCAER2027487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61eebad7c2b81c921f2e600948a9fb605a5c751a386cce0ad8d25c257c5dee22. 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/TCAER2027457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5cb9227b1f1e1746a254a40ace65b99be3bd216870f3565a5b5be3872e28fc. 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/TCAEQ2005854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45f37c316c9071dff8a21dee9e0b8a36518f8b38b1d5dc926f3bbc7d20cff96. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAEN1923910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f527a629d6b5999e7f19c2ded75d2ac3659cb4d4b0ff28fabb91b720cb354b9. 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/TCAEM1948540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1ec9da7b579bf5254c9e02d81f9470cca6848de38d497e0a7011c4a639a24b. 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/TCAEL1939648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01cfdd283c0907e30497b9a37d93ea951bdec420502e20a9fef3c826883e46d8. 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/TCAEK1948242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29d983183e1a93c3a033bb7daad840b7439ec6170ae63b7ce843837b05c7ec8. 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/TCAEK1931973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7937f53d7030dd29b41fd6cdb1ebb9ca6feb32437fdc3fc7aff2e3f8e9a4533f. 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/TCAEH1982981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e33d24513da75cf31cbd5d7eb2a2aa39b9fd1c61a0632c1e94dda1f7a9fa92. 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/TCAEG1984202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63c9fa7ff78632cf6da736a9f6a8b4090414adbe64b4a9bf7ec67b7f2f07fc7. 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/TCAEF1930874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c637f503dac1aa959d33062e19dbdce714e65ae2d8a43357c421d9b8f678f89. 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/TCAEE1926029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe081f1c08969b020b3cd8b7191e8ecc94b348df5cd990524ca382fb801c8efbb. 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/TCAEE1925999.
Dora (Parodie KHAPTA Heuss l'enfoiré Feat Sofiane)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6994ec5c177e0c2fa5dd05bffa585e30e7fcb9e7bd3eb014306301b2862881. 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/TCAEE1925971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f10a4dd2eda7829596fd96ba193bede43f509726322d2ddbaa3e91de44cece6. 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/TCAEE1925983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea161d77c98c71e1e2f1446b1098944817b7f43627f2d97b7b95c168bedddab. 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/TCAEE1926007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc962d3788e501499ce4385f8258b32250d9c0f818b63c988c97c3c3df1b8ff. 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/TCAEE1925951.
A la matraque (Parodie à L'AMMONIAQUE Pnl)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b40c22ca3d8fdc66ba5840188a054283c83ec6519d60cb9cca4ac4df2df198. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCAIL2420546.