Stephen, Steven or Steve Gunn may refer to: Stephen K. Gunn (born 1954), Canadian businessman Steven Gunn (historian) Oxford historian Steve Gunn (ice hockey) (1890–1914), ice hockey player Steve
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 0xdc421af45a7673d4037a3409c97fb34b4e0bce0128f62d408dde6fe4feca06f2. 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/a83295e6-f4c5-4c65-8c81-2b419d11ae4a.json and https://artists.proofprofile.net/proofs/artist/a83295e6-f4c5-4c65-8c81-2b419d11ae4a.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 0xb2861d30bb078513e1e6cf3381869b2fba5c23554e78ede906dd944fcf0d6354. 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/QM7281503944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be4bf8a606d1bce4c0f6b7be1a5e69ed00bbb0f1526a2f1a80996304b5e8037. 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/QM7281503945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994bced8dbe8919c98cd6022bd3464d20556cc5afe31b6a230809f2d674f344c. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QM7281503946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816158ae6fc0692e77f66f947be32e55d7946653332cf0eba43298f976260c48. 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/QM7281503947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06190d41c5c6ca10f24bb10a33df556b5cf3437f02874eb92b7889f7baebe1f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM7281503948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89b11583efbde613915219832fcd2189204c78dec312ccde39474a8c12ad326. 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/QM7281503949.
FRKWYS Vol. 11: Mike Cooper & Steve Gunn - Cantos De Lisboa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ca6f9a12713bc9cd6f6098dc4c53524fe4bbabbe4601a4d7c8ab23828093fd. 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/USSUB2038601.
For the Birds: The Birdsong Project, Vol. IV
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa68801efb6b2d27719b6287c18690f43677743d250ca15b9db5939a59325b8b. 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/USMTD2100626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b04645e6776976de890312f628c3b6b7bf90eae5487510f6b1e1b9bf3fde8e. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/USFMA1900035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dae2feb4f54a04bfacf4aade576265091562f33b72e06945815b77d0bbde692. 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/GX9VB2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26fbce1b35e83415545c49f7516d3d632e2833414b13f09d4c8dced1e435c3d. 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/GX9VB2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a20bb586e176c1ba57fa0b5e26ef0aa3d7d4417e0a05776b43a3a0a84dd5ff. 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/GX9VB2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40f243eac3fec1e6e2e5f1cb9fab163e2a41d7da0b3dcf293e1e94b8a12cf05. 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/GX9VB2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03035f8b05cdfd399c83973cf1d8def143ddf00c098131740cec6a150225fc06. 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/GX9VB2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba0a7f35fd647d162ca670d9a401cc26a4283611f868d63357b4cdd529e67bb. 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/GX9VB2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97ad17f413d06b12b0b09df548eba29aa6a8210cb5566af4d5203035afe3e30. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GX9VB2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50146964b4a60edfa72e533ac2e01da1a357be58d58ad9282911bf90398c2bef. 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/GX9VB2400009.
The Hired Hands: a Tribute to Bruce Langhorne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5994fac6f16c48d40f2063fbd216adbe54ab92fab842b0ea12eec87c8bd2492. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/USQY51621726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2271889a2b5822307c8661489b322df54cca181b7ed1d1bff6a42324dcde90. 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/UKGNH2200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f324e8ff892d3b6b6d01e5a73eeaeb7a62dd31457f2e9dbb7c9e6945948962. 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/USLKU2489002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa208b2f95fb21dedd9bb2a788216f8f0574839032cf3b2fd29962eec19a4f30b. 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/USLKU2489003.