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 0x92528e2b92e5471cf4271940f5b091cbf9dea64847185687c4c985da34db3956. 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/6a308928-11eb-450f-ba84-e3ad386795a9.json and https://artists.proofprofile.net/proofs/artist/6a308928-11eb-450f-ba84-e3ad386795a9.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 0x8018d498609362090406776665da913038c394fc88d04299982037da671b6334. 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/NLT2H2300493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d9894f2a42a3295045c8bb65d43abed30ddf63e92ca75b3993eaf6c1288a81. 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/BE8LH2200061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8c872e0f2227f4f4e2910227f87af1de90036d37f4127ea5fb478d6c4a07df. 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/NLYK92200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544ca98853469b643c546104ab21b9cad05c010651cedd29f4c14553b661f2ce. 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/BE8LH2300313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa2c0690029e0e54dedf04860dfe40a8ae2fdd78b82b8aba48faa690cbc074d. 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/BE8LH2300439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521296a16140bfcf0868a35842c49fa9460200cb8057d576c4f351c8925f1522. 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/BE8LH2300304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b483b1c383d26bf81388e281e63a3afd34a8a67034774f7bf9465d646ba153e. 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/NLT2H2400067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df63e1b007cc7d2373b655f199ed9d606a05d38c0f3fd9ed0b50c874d1e5492. 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/QZZ8B2369247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7303409ec5c649bd569ec0845c1dd87320b46fb69331b37525dab32f41398fe3. 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/BE8LH2300193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e415ce59004b29dea700f8b37f37b0aedf1cf7ba067025a8ead368bd9c0272. 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/NLX3Y2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd2ce7e601b34e18746b4012889691b682ab4e6c4ed34e99acee4dd377dd5f9. 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/NLT2H2300637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a4099800e10c003781daaa6b516d495bd974f846ff7a7969a6c5b2580f4858. 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/BE8LH2300138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae96f7dfff49fe722f72ac093c90f4b61a191083cf88f882e17d4ef8261474f7. 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/BE8LH2300093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3838c6c16b6809ce05b020149753be5827f2f2aaee7f2f1d0f3607b3838cf40f. 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/BE8LH2200143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba2d7b5fa311adea352dbd6cd2e42a54f2caefd75f6a4da900da7375be1fd03. 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/US3DF2295663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8e7d90dfa40e6c3f68daeff02aba504583beabaf5c236776d309dc67604a13. 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/NLYK92200107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81dbc1428efeddd8fdf807cb697f869f79e7c7ab581a34261582915ad3cca5e3. 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/BE8LH2200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08064b3c3344b04e41458361e237159b0bb309387a9af6f5273d81dd6103362a. 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/NLYK92100119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5ea9fe317b16d804c8aa8f9274de961bde4363d511040b5dbaa11a8ab4b6bb. 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/CH7812421065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced61e576c1bbbe3efb4a9bfc2d621b68ff0d876c7ec5797e97c4ae91f3f1209. 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/DEH742507226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5edf57b5ef3c45347f0d5342a9e7112828a5f50e48dcc2d5add244f754ee1bf. 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/SE5BU2540283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf08113ff88a6a303c619ea959d7771f45e476a04431a4f24cb73d8124c0bac7. 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/BE8LH2400239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056a0570059f3a4d0e79f0523e58fa6f62c445b7c2152b378b268617ef1bb02d. 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/DEXW62400291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1c2b93ca775af65b412b7d4009180cb58f57ed5fb1a2539b25560f5e61086f. 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/QZWFJ2454081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb735c4b1d5d019650883cd83149ac57ab6335e5958972c07f5d1eadf6b60e5. 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/GX4R52481467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d6c14051d76d23dd421c37c29c5dbd2bbb9313188dc76c590c852f93f7de64. 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/CAENV2451027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd70bd96d2c43a3c3e5c0b650d21e3be3823ab5cec5076a3942225dd96394486. 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/BE8LH2300402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157fced6d7b69181086d2a8d04102852ded3b9137d9b66878bf04d2e1000c96c. 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/BE8LH2300369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5b9820bf3a2089ab5179c978c28fa5260d03dcb8267af9f6971b2d00245d4b. 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/BE8LH2300461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c2983330341bc2494cf5713257d969b187d06238afd25d18179bc7e7ff6169. 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/DEH742509427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa889fdfe6d599fce1ee3dfaf55198d85e212da84ab762ea4f53dbd1ff2ace8c5. 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/NLYK92500149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76aaabc2b85c0bb719a469a2388e57b871328eefd9c58e38b28c998b9bea465e. 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/NLYK92500122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d9894f2a42a3295045c8bb65d43abed30ddf63e92ca75b3993eaf6c1288a81. 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/BE8LH2200061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3838c6c16b6809ce05b020149753be5827f2f2aaee7f2f1d0f3607b3838cf40f. 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/BE8LH2200143.