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 0x95c18e2b28c4c230b5ec5db5de67149abe574bbf05abf523947eaa5867a1518d. 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/a46e2a27-26b1-4713-9634-d78254198c54.json and https://artists.proofprofile.net/proofs/artist/a46e2a27-26b1-4713-9634-d78254198c54.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 0x27b458127e3badd54f422426ef76d7ce2757e3b2d3119f1ffce7dfc1e0000978. 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/QZHNA1951970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b42e8fcc6558c60827b1578f4b1828cc9696afb2d85ae4d04b64bd7a749b58b. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:01:23Z), 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/QZFZ52013702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72090dbf27a36f2f6f487166ce6e56306301206040f543b204fa4e983ada4303. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZHN82039891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8adc5e39d8a0b9312fc5d64136e1f59ea8998852a28bf06dbe487d2cef21707f. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/QZK6N2015610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741c024dff76a32df81345a8eb5085b8510e2f563d6c715d00e1d46c9d4ae333. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZK6N2015609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5afab06e327cfc0344836c18328e4f96ab85932ecde15469f9246fc175cced. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:00:02Z), 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/USLZJ2056001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300d9ae377342ea6620ba873319616fa655fac928750a40cec93dacd5afa1dd6. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QZNWQ2146315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727d291b7191ff7858e63c579f99482f2168d1e4c5817372063e27a3e9bf1ce5. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:37:57Z), 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/QZNWQ2146314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fce4d8175162e66a22639d15d4ae1eba90fbc3ca217e74d2f42b2e327e08de. 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/US83Z2331795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74936df20fb676cc1338bff890f119d553e62339436b88b8000b4ab7459bd250. 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/DEL712110173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab4db800f06c1c797e922e16dad2ec69f9c0792bea75d5aa956eb7dc6adbf32. 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/ZMA0J2000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d8d7256ca585bf79f62fe7ef0dd3273bd6d2a57982724dc6e3638014957063. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/ZMA0J2000033.
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 0xb5bf835769191d03d6c8234103c3dd86a511445da1982bc7ee1befc648ee47ec. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/ZMA0J2000034.
Dame - Paso Doble Extended Instrumental Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48332d2b9623817fdc01ffc21259e1fd016fc2302b4ebc8f3c04ccf8e94b19a0. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/ZMA0J2000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1c1c99119b660f537a60d97bd37d6753d18cbcc45f4c273ac44780edbf34dd. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/ZMA0J2000036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5821000a3ed64944adb54911c2afba3425bd5d6429440ec6d753821ce78e12b3. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/ZMA0J2000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524ebbaf748f6c36f9bcf0aa1a73678d0996726d4eebb61348ccdef5c0466d2a. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/US83Z2216309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca27879528063db124b34173039172d7c099f6321a9f5e0923b14ed6b2b7ffd1. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/DEH742004686.