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 0xca660a1483d54101f0530d411ebf4f776b896ebc7ac53f7b144137f2c360410e. 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/db0fe7fc-1162-49eb-969c-9cd68d0d7940.json and https://artists.proofprofile.net/proofs/artist/db0fe7fc-1162-49eb-969c-9cd68d0d7940.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 0x3fee726ff4ebc469b809d26cbed13b439306d02544c654adb31aec63f0a9e631. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/TCAEU2055034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98636dbabcb18483f1f23f2379760b12beae1152bb7d565ef348885404df2dc7. 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/TCAEW2065365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93cb5063c25b3d478b8e2bd655601b7fafdd6f5e443fd657c3b082fdcdd4c0f9. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TCAEW2065381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f58ffdbcf9a64b9bd0ca3224ebb365b95ac741d78998587d192a233a6483e34. 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/TCAEX2007064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83eedb1ac7e1605a3bb58edea9e923959242232ec677d0698ba07982ecc5216. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/TCAEX2007090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c355f899f4a20a6769858383cd5df7c2ec139b31e99d62abb370a29bd506861. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZMHK2028818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8a33e7a34bd8a4c2137d1adc271e518ca1e892b9f226950c3c9ac698d582e4. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZNWX2048456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e7f86e19ce4abb76c5aba8f2a1cccb26a14fd94485a87b7bbdf8b6f7b58f40. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/QZNWX2048457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7ee6541406a6aa2d4e6151ab5bf13424ae37f85c0d6ae050d0dad0d4d8b534. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZMHM2042923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbd9c437067c2e951529ff336c6b6e2343bce4f4ec686de8acf208755ca6f36. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZPLR2088215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e4eac0b425ca37828b8b2fb2e3a81158bee351f8a418d6fb854e48cec5405e. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZPLR2088217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf518862f3057a5afb78e8812e67d0f91733beadc9eec8504052c6c17a8ee897. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZPLR2088220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34bca8724049bfcf65dcae093ea4a09f3ab56a7b1b82ebb6e6c81262a65ce95. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QM42K2110521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18efffd75a1716a44a1f16357e740423ee818bcf7f5e15765b118e53dd77f99. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QM42K2110834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b15f3b6d1b848e06e1ac29d0c04dd804168dd06283dabc47f47585919089a9. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/QZKDK2125669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f715f02b641b3a9ca557a24afc65b2e9be9fb6447c7fd67dda22122be88960f. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/QZDA62102039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8db2702f81d6af01c4149d7f842b708160a5ea11d6fc905d9f876f7d2fed8e. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/QM42K2128686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebae322a40839f32eb5a38e4ccefbeff86a16ce51a03ad3b81bdc4535d337ad7. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZHNC2125710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94025e70f83b1546a5e300d1c065420a6efa692cdefcd834719817d28ffd498d. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZHNC2125711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9263e5c412db03142ee91982b756b2df9b84e2862489cfc132e9dbf73277883f. 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/QZHNC2125712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814cec76813196bed7da5dfed3054a66deffc8536e81f5bee356f421fe44c9e1. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZHNC2125713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601a4e6b0cec8f166eff5dc8dbbab691a6228ebab68c60701b80b2b381a79af2. 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/QZHNC2125714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fab5c39851a4377d956d6d1d16eca06ce80f20e424e5d8651795bd54af4be6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZHNC2125715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e36346434419e49a10abf006f542bbb258556f9a07959e3af731dea142fcc9c. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZHNC2125716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b213c6bf5d9efdb68e17b4fa6e10d6796359508fa9f92adc6c13ad88fea0c1. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZK6Q2143264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6706cf1e3f3c425b181c81877b1eadc086df69110b756a737b5e2fc2d8c2c2e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZK6Q2143265.
Soul Nourished by Sunlight Allows You to See Time
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c8932d1a1a40f092d3df035adb148ce067ea521a7e4fd76ed3c799fadb9cc3. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZK6Q2143267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9592880aed7106ac107abb0dfdd373eff4b07905a367af19852b633544f224. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/QZK6Q2143269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5311be5ab1e56a3b98633e8e1569909925fb32f07216c872411f61cb1b95ca00. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZK6Q2143270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17382653094f5c093c05ca8077a3064c648e00652699682189c03a73a710b829. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T16:12:29Z), 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/QZK6Q2143272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9640bf959017010c67a48658bba0b2e88c7aafd524883c72c589dc8e4a5dd0. 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/QZK6Q2143273.