Castro may refer to: People Castro (surname), including a list of people with the name Fidel Castro (1926–2016), leader of Cuba De Castro family, a Sephardic Jewish family of Portuguese, Spanish
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 0xe0d0fa80e84dbb9bb1a4cdcae6eb13342ba8cb7f7867a5fb87f8f4d125fb0226. 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/a018caf2-ac1c-4f6b-b95a-24132d3f11e3.json and https://artists.proofprofile.net/proofs/artist/a018caf2-ac1c-4f6b-b95a-24132d3f11e3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Taught Myself to Smile (feat. Teneill Sawyer)
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 0x9098ee8bf080dce6d5599934b9f784e0a738b74c34fc66e5a08158ff9d8e25c9. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/TCAEE1918620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d4c802d90ab4335fb9a4251ae0bb1494e40c348a6a7a37edc5a2d94d855b76. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/TCAEO1996739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6d57d54a43b77c732db9e9b2e28d3ee2e04f426a1073a0e9e0c4827e2429c1. 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/TCAFC2033893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a3407497114fa44d5b7017c68264051f4777febe7758de5dcc609d83dce45b. 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/TCAFC2033897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a64e378233e79494eedc3dc0dd7e8a9e074aa2a8a80a82ff356e37f116f4420. 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/TCAFC2033922.
Lock Down Sessions Episode 3 (Ready for the Pain)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70dec5d1403c4f278a623a897a84ab075c0c2e94f90c91ef5c731073de028dce. 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/QZHN52489240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a54f90b6b607fdde27c22c1c3ec670b292e844a3d721f153c868862a7a5b11. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAII2488509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e5c73acdfb7b9fa23b4a1e61de82b1eb30fd1ec68b5b43a0261175f5c50804. 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/QZPLS2414857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aeae6be8b53940186283937e4df08fd983bdd3394126acb9250347c3c83cc81. 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/TCAIY2470604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cea9e9fab332c2f8024664af6b1ea25829b9a772c71d2c5c2c3014cf1d30fe3. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/TCAJG2531400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb977330b0b6de1f7e563f6ad440880df1966022d204168be267cdb2428f380. 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/QZHN52582564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445d14781c6b483781056c3122ba743cf8fddd4b2f60c37d5798ea7c76d1269d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZHN52582565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01daf4d21f24c59eb84b67614a2cad439f47182bc60a2372943ed83de52aaf91. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZHN52582566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbac500acc646358fa7416c058164f76c9dd88c3e9916eb05986efea4f67973. 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/QZHN52582567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514bd4ced236ba49c2931a7d0f9fb056c71e4256a8fc2b41a8c24edb34020647. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZZ7R2585338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96e00f244b5246e01401d4ca78f1db5dfb3639a76e08c70a367c3f07ae34e61. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QT3FA2596762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8eea4b4bc0e736996e184357efd9b5c6a744fa2f71bb88c52ac9322ef393f9. 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/AUNGV1700672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f6f52cffc276b3fc460a37b4484d82d0a10660f9a88c9338b886ade80754d8. 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/AUNGV1700655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709fe6e2f1b72d477b7520e640f1526127653d60c4d6157c241251d97216a043. 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/AUNGV1700651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5242806ccbf531f4c9f999038b3f40048ffc8b8f0b2ae93a6359fad04a23f9. 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/AUNGV1700645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78226c4c28fbc5a69747a50bd339ce9ddae3900ddaa3f3d4f95fbbb32372e031. 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/QM6N22165902.