Robert Donovan may refer to: Robert Donovan (cricketer) (1899–1932), Irish cricketer Robert J. Donovan (1912–2003), Washington correspondent, author and presidential historian
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 0x017577c97d78572991421abd4c32401abc7834a7f5246f7e8fce6b158d4f84f9. 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/44f1d297-4fdc-4f09-ae1e-d1fdc2cce162.json and https://artists.proofprofile.net/proofs/artist/44f1d297-4fdc-4f09-ae1e-d1fdc2cce162.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 0x41f70ba5efd82310319603c9cae0b574860a60a0dc03fd75f66a7af2895ab850. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/CALVP1913092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6e4e64ab1f1aceb7d7c84d8dcd83eb7020e184d395650dcb51f47e2b2bd406. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/CALVP1913091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d22ddef2d587e1cce231feff3f334247f7f8738ac3fa708f86a5dd4b109af1. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/CALVP1913093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978fd11b363f4b43d810c33d8e277f80bb1ea79d495806558fad651677eb609f. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/CALVP1913082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd77260960570c4ed772f7265aecd1054c350528f90746fb7ff641030a99663. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/CALVP1913083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0afda4837e016ace234cbf878e19b943c62743175e377ad1e5ca4b4127e800. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/TCAEU2058415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc620ce7c72a02fe11d80993410c1953724861e5883d51939843d6d93b3dde75. 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/QZGWX2094160.
Make Your Choice - Chill Instrumental Extended
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82271bb52c390acdb9ef4aef5a26432c044bf36db46583b1905e994589d270be. 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/QZGWX2094161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227c8efb0c70dccec141bdab621a45ec20523100b8171796ef170210468c4b08. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZGWX2094145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b0d32b7433942e1e783b023b43d02bd83a2f549e6def36aa8f17488cdb6697. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/QZGWX2094146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f838be99b319c3f1737c56084564852c4897b8ac811b5e2c6244968881efb7. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QZGWX2094149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc931d04186e8043ee04a2fff94f93aaffc3239f47ea8ebeb662ac817f085cfe. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZGWX2094147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf928480445ea8d5aa3777fedf4c4a823853803fec629c1cf200d0d1f2d05b526. 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/FR2X42169799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafdc5facc370644506ef3af274f6e994086bfacd3612fa2682754a26eee677f2. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/FR10S2219397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5955749443d226f3f40a8619d0da45c103d8e141842c0b8fe626a80e47dcda59. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR96X2225818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad6a2a81587be2a55e1bc200151eda47743736555d6f4924e99d2b25d3065c1. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/FR96X2225819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e36d2283084e4821c72fc9be9bc0da1fbbe691c6cefa495be46b475afccfbef. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/FR96X2225820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b075af3d6dda0f4b24fbc23ece58cff352792c0c91d27e03789a32a08f74bd. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/FR96X2225823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1192946e46977da6c723b696c01d117991b0d64cbddcdbb83f5c87aa06c59e. 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/DGA052257292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f15b122468a95756efe2ee1fdee54bf792de4fa1d88f4c0753a02f0255d899. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DGA052257293.