Dan R. Olsen Jr. (born June 22, 1953) is an American computer scientist who specialized in the fields of human–computer interaction and information science. He worked in the computer science departmen
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 0x1d629836ff0101ce336e10c7d8df7de4e185b0558625efa4f60723babb53bc99. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5ff1c847-068a-446a-af27-1978e3ab13b6.json and https://artists.proofprofile.net/proofs/artist/5ff1c847-068a-446a-af27-1978e3ab13b6.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 0x5ba2b21205b605f8844cf4eed4d88d6d2c65a7bb38e0b094a186c37cedb72ca0. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/USHM91422402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba2b21205b605f8844cf4eed4d88d6d2c65a7bb38e0b094a186c37cedb72ca0. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USHM91422402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630a39628c4d556da7ac093d18248595c5e0a930a400d8e05b5d9c09bc93aa66. 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/USL4Q2200353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31e25b235dc9ddab1b7d3d69e13c0cadb8f547ec37310d39cc0da614b722c06. 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/USCGJ2382347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc42dd33c4cd43096cbfc69e55addc1a2c6214e7b7b917a32c2cce3e401168d. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:09:28Z), 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/QZK6G2362890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21165f6d30522db6179c9faa4402531e2031746c1efcf2044383f05b7f48e6b. 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/USHM82293243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea03911ef5d47bf3146f4f19c59f8c81f9c1e0b7b431a8547b4c7b0f2fe6f5c8. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZFZ72405278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065e2800591435bd27344ae3a199190e2076386c1e634be455b3e99e21d506c5. 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/QZHN92443807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec950dc6fec239f99b11a866eeaa31fcc3efd3c754c84d3b00efd0d155892dc8. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZK6M2456453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb4e17136397c97a234e6b46fee422be27986e97f0c9477d95dd71af4b34ccb. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZMEM2448446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2ce36fda9d3083dc5a47619ed1c609d3905187c196c92d27a5d41cc1d804e6. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-20T00:13:33Z), 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/QZNWZ2412090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7d20284b12830a57ac95f79385779717491dc61a9856705c47d42000599cdf. 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/QZTAU2459102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc376128ea79e5e4705f4d49c311ea9e9d352e3f0ccc11084604e8add6ade7e. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZTB22414099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5da6b4848e5882f068f3a010c5e95736a351f53ee0ab174494210be2d1f5ae. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QZWFF2401262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a24a74258989de252e2941e2dbe0942a84b8a13854e9a2c980c81a0b60b0220. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZWFL2471660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53553df2f383377d5ccbe91f464fc524a44bc431126237881995e42140cab6bf. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZZ792440885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f983cc82fb0ad7960293237d6a364ff271c18b6f079aa0d25af20999418f2e. 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/QZES62521857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830b9c4c2bd1be5def54ac8a7e38804b792572e8fe42dd9ab58d92dd177840d9. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZWFK2562987.
Isn't That Lovely, Dear (Acoustic Version)