Ian & Sylvia were a Canadian folk and country music duo that consisted of Ian and Sylvia Tyson. They began performing together in 1959 (full-time in 1961), married in 1964, and divorced and stopped pe
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6a4a3671b84e90b0b5730486d6290175189b615516fb94491c5b391b8a973f. 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/414aaadc-4433-4a89-94bb-2e74d9fe13e6.json and https://artists.proofprofile.net/proofs/artist/414aaadc-4433-4a89-94bb-2e74d9fe13e6.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055b311f2885083102b420d720d36bf4f4076e4b9cf012c46f16e1323a81e96c. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/USVG20186064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13fbe974542f2436a5633038c013c8576b5918a644842fc4a7ec2ed335fa6b7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USVG20186075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bfa6111d58f3081da42983570211ddf49fed947973743fd3f5fc782c4558177. 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/CAC086700093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ceef0fb88d35ca70aed9a32af78948272d7a91e852a50a2497def671ad21aa2. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USVG20186025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ea363cb8cf2ee5e392f8b5f4679076462430e12753a8017d291cf4b28cfa62. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/USVG20186045.
Complete Vanguard Studio Recordings 4-CD
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac16a32e66ac2abb9e5d44d4dda21d61542d0b86d153ad1ea3cce52f97b533a8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USVG20186076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbaf15fa4e09413819f13f7a6b9b1365af09431be03bb467346fe19ebf08517. 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/USVG29451959.
Un Canadien errant: A Wandering Canadian - The Best of Ian and Sylvia
Someday Soon::The Best of Ian and Sylvia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0950f7ce6fa9ecea6565c8638bc1167a24e6424ff169fc8ae682ce2e6759ab9d. 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/USVG20186065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00660cb0255b33153006f5c5a43310f6652d33077071080a224a2fd90b6a09ab. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USVG29508948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2021f33f5be899c7a30aa023eccb693084441f3e39bc5b33a01088d1a324af. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/USVG29552162.
Dylan, Cash, and the Nashville Cats: A New Music City
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e2c69c402696a7d4d1281218e51949f316b4d6bf233e30a0b3c034c5490932. 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/USVG20186101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0950f7ce6fa9ecea6565c8638bc1167a24e6424ff169fc8ae682ce2e6759ab9d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USVG20186065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07bdee09d259b95b355aa0c1e13aa7f30a174f01193774f2ff69112704244210. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USVG29008016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e13ad4a02168e0dc595b2eb3905f9025a140db9eed41d4b11582a42962cb77. 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/USVG20186074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f0bf51079340323f8355f81129bd22bad7cc4b43e257626b7502d0669db524. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USVG29853038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351a02c0ec0741663bc5208fec7246c26aa6a03cfdd3303f3e8e41bf1499334a. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/USVG29008941.