Robertson may refer to: People Robertson (surname) (includes a list of people with this name) Robertson (given name) Clan Robertson, a Scottish clan Robertson, stage name of Belgian magician Éti
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 0x4efcf1e323d99b203794af4148022a123b5c6a36670cf0a4394a8715c61f59ad. 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/a75201ca-ca3d-47b5-8f21-6efe024bd436.json and https://artists.proofprofile.net/proofs/artist/a75201ca-ca3d-47b5-8f21-6efe024bd436.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 0x30f39ca55dd396683183b224778c5c1d223c63649e24f822a23f943e4af79236. 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/FXQ892200514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597e0458d382b73d028787f15d613ee6601720503317440f92c92e207ff1bfc5. 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/SE4RG2301864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2afef60bed9b6f9a0582ea4fafa4855ff9e48445618cdab39befd33ffd69cdc. 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/SE6RB2202563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ab17b1024b0a1432071cec308f34e0ae92900ffa04ab31b779ee24ba320e46. 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/SE6ZX2194501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7daae8b089ac2824e8602e28e5d4a2102cc48fe85586e2f7f4756250a2f8c270. 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/SE6ZX2194502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0057785b443ac05887f45cd06e2f92c4f1f6dfe6b88878a4d67523c48c95bc7e. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/SE6ZX2194503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9888bd02db575208217212d17759b4a88dbe68e37a6128930f16c45f4d38638. 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/SE6RB2187002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb582897537a951d4dc271ac89373ddace3acdbedfdf0b73dcb1de9a8f99c7f70. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/SE6RB2182201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977f18c077174b069b17ecb9bcccc302a0b4050f8c8187aefe236daa447ec8d4. 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/SE6RB2072301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060fda3872632946001f04523105b00a4936af1cdd5d94aebb24d78fc768db40. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/SE6RB2072303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a9d0585e1c584c445cf5fb62d5db1524b9e1dd4e243937e56cdeccb421d99a. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GBMNA1019283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c3740414dc51ff3a33e358971bf333014e5d276447cc7466f7c27ca0981949. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/GBMNA1019289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d9f1edd551c8d14b5fad922dc341e0baafdabce462326c2fcd170abaea8acc. 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/GBMNA1019290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25eebc5974ffc8e4d2a7bad37fbd376462a1a3ebc9e6dad62e34b0d832ec40df. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBMNA1019291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e3f5eba8dfab7a75343800048ce873b64ad53cf6b12dee24d3ccebc5732977. 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/DEZ650610338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135b2a4520764d96894a4792e9e2dd31bb6894d245f08126be3c4a5652f53424. 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/DEZ650610348.
Iona Boat Song and other British Isles Favourites
Marches of the Royal Scots Guard Regiment