Jason Castro may refer to: Jason Castro (singer) (born 1987), American singer-songwriter, contestant of TV show American Idol Jason Castro (album), the self-titled debut studio album recorded by Jaso
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 0xdd9087865eeffb8b21e545f5e75998fdaa418ab2d936da819dc9e224b8f23a61. 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/78c9f253-4303-4844-95da-1fd5d0751700.json and https://artists.proofprofile.net/proofs/artist/78c9f253-4303-4844-95da-1fd5d0751700.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 0xc234141d34c2fc1386a357a3607107ab9269c661f05d5831868160651aae5cb2. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/USWR61202123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283589c2898705a0cb1b97fd073f2abc5ef1f594e75eb9869bb66699cd7770fe. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USWR61202127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaddcf9236e7243b8e95722463c789a1c0160480a9ff93ad1c161b66dd4587a1d. 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/USWR61202133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ee526e32af17156b6a6b09ea927e6e63e33fbc0d4a1d3bcf01cacd8e35e010. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/USAT21002120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6deba29e056347651ff9645034442ff3bf30a0081840fdd6864fa5f0cff60cf. 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/USAT21002101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ad07f47e84b8cc7fc5c42362078da08d2761128dc67971f58e69689c0c811a. 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/USAT21000325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6061de26e6abbf6bc41d244f28f4c5375c6f241b8e9d5d9a61a451431fa57b. 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/USAT21002121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ae01288bc1e9f4ae594438b24cb34ef50d6f263b3c1104998cf4805119aa9d. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USAT21000388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2077f3cefd96e281c434ffcf95ab77d72fe4673354ed4a9e7928a524c437560. 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/USAT21000384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863127b66217307c41a180fbfa6fd2d5a172837472d5adbf24205959693c5aa3. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/USAT21000381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ad07f47e84b8cc7fc5c42362078da08d2761128dc67971f58e69689c0c811a. 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/USAT21000325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa21b8fe3ea1c8d644856f7b91a75aac25ac7cf02a7da9bd5b755b7e4a73a2a. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/USAT20904128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f6b033e59341ca21d343052ac18838fab2a1edd7b36b9576e42d861f1720c6. 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/USAT21000382.
You Can Always Come Home (feat. Serena Ryder)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4113c0f488638d0aee44cd8c5ea3ea3427aff6032f8f01d473155c54a50619. 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/USAT20904129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471b450f18c3da60db4172a3106f625e863ec4f57ac3c110ce20abf2ec16f768. 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/USAT21000383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2077f3cefd96e281c434ffcf95ab77d72fe4673354ed4a9e7928a524c437560. 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/USAT21000384.
Gloria (Hark! The Herald Angels Sing / Angels We Have Heard On High)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28bb96fc971a9dfc917a132eb9854cc846c8028e5fa53f66bab89656d02ec4f6. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USWR61201326.
Changing Colors: Jason Castro Live from Studio 1290
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb426fb21fb331ea5b260015c2e1f3ada8928bf73174ac0020ad35107428318c5. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/USAT21002100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39cc8970d13dbb87994ac5538cd3ed1e1b4fcddba3a7d9da043938121bdf3ac0. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/USAT21002103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335a1637b03d48d7aa285feddce6d4f32a5b266067f7df3297666a1ce7bb122f. 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/USAT21002105.
Love Uncompromised - Acoustic; EP Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b37e22eccdd63369f17e9ed12e18abd2faae790c1a4384adc5a7a2f2fa2bb4. 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/USAT21002106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3eda26f3a8892c54132f2bd176b6c26931b23bba95693370e54f772055512a. 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/USAT20902834.