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 0xaa87d4be7882c8f6ef6b62faf2a72480240bb2b26cb32eda40343a692163efdd. 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/8148c962-6704-47b4-9e2b-ae688c782663.json and https://artists.proofprofile.net/proofs/artist/8148c962-6704-47b4-9e2b-ae688c782663.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 0xae3fe669752ab7e35c77e05ff5b341532b51338ff39e5774139582ae4def5fb9. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/USHM81151315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5810b2a235fdd6396b1229801166569999221cf01324af336b81beabb017e216. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/UKTUY2145960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0eb8b97840ed35358dec81da04adc55f7f495a54d890cdcc19c5a16885eaeeb. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/UKTUY2146311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a2f26c260cfe89fa97a3ecca09666efc838e4dc758bfdcd2abb0650c4b1cf7. 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/TCAHB2391944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8a81f4fb61e5912ddac2ceadb147e5378006c5aa8a8f0c9cff9abbf3c673d2. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/TCAHB2392006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3126255483805ab4a4bde8ec0b845f76bb60f8e3a5e1174ccc3a2f3d083e2b12. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAHB2392018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee7e9e3777cf666c0dff02d71a2e26c77b554e23b50b4994d030efed5cad3a5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZMWW2441515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0b29ebea26911d28d4b3127d2420b64e846fb14e3d3ba6b9fe1ae99822c963. 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/QZX5Y2303101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf666a56c40c9d5f4ccae527122ca81c80f2bb3037e12f6932b24ad6f80a2f3d. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZMWW2422041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4e5852f76afc0776014c9e54d3c605b3cc858eafa79bab5f59a669e3f50472. 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/QZL382469704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32a5cafd7632aa1f6ebf51e07519d6551982fe01b98edc204d9be843eb020f7. 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/TCAEY2054717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8592bad92324483cfacdf3b96bbaa6cf619b53a45871c2aff47dc69610b59093. 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/USUM70607170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657555294a393ffac061d99e0d144740ca6ad0e63e0a954e1de0bf487ca8f587. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/US92U1901997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8110aa5675817bc3328bfbc88fa69c7dc59f12bc442406f099a0c2eb5fbbf5. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USUYG1366419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11884a1c972408562939ec1648d7deaad720cbe771762da9f64ccdb9482b8439. 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/USZHR2100087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d892297b6507ace7e7294e5759b876c0f78ae1aa3f2ed997b33e1807cda69b4. 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/US8JA1906002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e565e74f9420c31ecc9bf508e2ae3d844387b3cc4685e88909aaa4e8b2304c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZF931900107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3cb3533ce1d43209c837f2360eef60afaee99e7848c9c7ca60c7cf985a3560b. 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/QZF931900115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26088a11c1569ca9c35f40cb210394393c77667b6f7aadbcda394edf5226ae10. 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/TCAFJ2192061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8592bad92324483cfacdf3b96bbaa6cf619b53a45871c2aff47dc69610b59093. 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/USUM70607170.
Don't Feel Right (International Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6ccdcc9b4263f45c873caff43fa4f72df494279fa46dfde37eed46ac60f0bb. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USUM70603123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1756e90655365198c45315c2acf0b9f2d0b4d97815aaa56fbd8841f588365a24. 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/QZWT92400007.