1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x431558e304493a072362bba00cb6f451144f7e7b75f21b74e3cd3b254ac05093. 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/80ef63cc-de0e-40ca-98c8-de2369a63848.json and https://artists.proofprofile.net/proofs/artist/80ef63cc-de0e-40ca-98c8-de2369a63848.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
20th Century Masters: The Millennium Collection: Best Of Robert Cray
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2fb1e08c5a83047ad453098f0de721954777b633ee2ae90079df76266ca5bc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5tRu8kA4d17uwGVT7I3YIR.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5tRu8kA4d17uwGVT7I3YIR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d6c411f058b44e794578d1a3220d14170eb3de1724a2492806ec98f532b351. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/23YyyUiEZYlT3MkzpZhRbW.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/23YyyUiEZYlT3MkzpZhRbW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1305d96d3f905b2931349c6a85b524ff2e7209ae2257f7519a5d0fc54c92a88. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/12xd9vbV1Z2ZHkezUQnusF.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/12xd9vbV1Z2ZHkezUQnusF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94fa4b519e63584595a9a8ada678c4bb643293b136a24ab82caa23210bc9f5dc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5N9b9rKNdw121DXV3IR159.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5N9b9rKNdw121DXV3IR159.
{"copyright_id":"0x0e46e4ee4c7cd73385b7c98e6ee1d62bb37dfe49c7ac3020c7cdf99a87436fe4","isrc":"USARL1174301","name":"T-Bone Shuffle","registered_at":"2026-06-08T01:45:21Z","spotify_id":"3NIHZC5djh59VExPFgeSep","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e46e4ee4c7cd73385b7c98e6ee1d62bb37dfe49c7ac3020c7cdf99a87436fe4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3NIHZC5djh59VExPFgeSep.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3NIHZC5djh59VExPFgeSep.
{"copyright_id":"0xfa759bc7cff03287c7db28bfbef525771c88ce6c66956b0ee9e79beed70e8b6d","isrc":"USARL1174302","name":"The Moon Is Full","registered_at":"2026-06-11T04:35:15Z","spotify_id":"2ws4VlBs6JTT5U61RmcHVB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa759bc7cff03287c7db28bfbef525771c88ce6c66956b0ee9e79beed70e8b6d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2ws4VlBs6JTT5U61RmcHVB.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2ws4VlBs6JTT5U61RmcHVB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9305e51cb398f085af7289fd4030fc2fa21f256c18ed7bbd54c38b3b97cb9fc1. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T20:27:51Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6i7LZxlb78nGmM4DvVLFRX.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6i7LZxlb78nGmM4DvVLFRX.
{"copyright_id":"0xa249e65bc404a60bd9c20c857e7da9af70e5ef6977df62a00ac2b389ea263a02","isrc":"USARL1174304","name":"She's Into Something","registered_at":"2026-06-05T11:39:54Z","spotify_id":"7HngIR3tDbSqRTmJwHGfyY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa249e65bc404a60bd9c20c857e7da9af70e5ef6977df62a00ac2b389ea263a02. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7HngIR3tDbSqRTmJwHGfyY.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7HngIR3tDbSqRTmJwHGfyY.
{"copyright_id":"0xf9291a7ec0c0bab58f84ac013f6fd645f91ab191b432dabcbf9c1d6b24e4ae2d","isrc":"USARL1174305","name":"Bring Your Fine Self Home","registered_at":"2026-06-07T18:38:16Z","spotify_id":"4RfDHL5yju20biyjzdqwsl","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9291a7ec0c0bab58f84ac013f6fd645f91ab191b432dabcbf9c1d6b24e4ae2d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4RfDHL5yju20biyjzdqwsl.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4RfDHL5yju20biyjzdqwsl.
{"copyright_id":"0xd01c6859f18397e6dc000d3bcee279f4308c0d69ec6a9a5fdb5d89ae8cd7f153","isrc":"USARL1174306","name":"Black Cat Bone","registered_at":"2026-06-07T06:12:27Z","spotify_id":"1ici7lPp7HXKhkzQoDUNY0","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01c6859f18397e6dc000d3bcee279f4308c0d69ec6a9a5fdb5d89ae8cd7f153. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1ici7lPp7HXKhkzQoDUNY0.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1ici7lPp7HXKhkzQoDUNY0.
{"copyright_id":"0xe8a5f19f574b6abdd9b5bd8a069d11f0b0aef260e53fbf042940524d09deeebf","isrc":"USARL1174307","name":"The Dream","registered_at":"2026-06-06T22:29:53Z","spotify_id":"1rrleHdr6RWYfZnWEGhArz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a5f19f574b6abdd9b5bd8a069d11f0b0aef260e53fbf042940524d09deeebf. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1rrleHdr6RWYfZnWEGhArz.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1rrleHdr6RWYfZnWEGhArz.
{"copyright_id":"0x51de18e8a12af1b520cb7104a977b48cfd7e1f3f85adf1b792c407a5ce65a9ed","isrc":"USARL1174308","name":"Albert's Alley","registered_at":"2026-06-09T15:33:32Z","spotify_id":"1XiPEWYq6I4d5zS9tZ71Ar","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51de18e8a12af1b520cb7104a977b48cfd7e1f3f85adf1b792c407a5ce65a9ed. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1XiPEWYq6I4d5zS9tZ71Ar.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1XiPEWYq6I4d5zS9tZ71Ar.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08902438efb11da7bdd27a68699917bb019c501f01605856c27d269197e27fa9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0trnkJH0BNhEEj30612KhN.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0trnkJH0BNhEEj30612KhN.
{"copyright_id":"0xf85990aeeca54f2e8bd4bf5be5c0541e3db38a828e445c36cf61e30da54bd6b9","isrc":"USARL1174310","name":"Something To Remember You By","registered_at":"2026-06-17T06:59:17Z","spotify_id":"5X84tR3c1WMDRvUvyPyh9K","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85990aeeca54f2e8bd4bf5be5c0541e3db38a828e445c36cf61e30da54bd6b9. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T20:40:35Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5X84tR3c1WMDRvUvyPyh9K.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5X84tR3c1WMDRvUvyPyh9K.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2fb1e08c5a83047ad453098f0de721954777b633ee2ae90079df76266ca5bc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1R31T8DUdDY4aFgCqDmVo5.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1R31T8DUdDY4aFgCqDmVo5.
March of the Toys (from 'Babes in Toyland')
Albert Collins, Robert Cray and Johnny Copeland
Alligator Records 50 Years Of Genuine Houserockin' Music
{"copyright_id":"0x63c59b37aed17f3f0f20c3aaaa90c3af28aa177cfd51d662bda3e08e5d9ad9da","isrc":"USARL2100010","name":"The Dream - Remastered","registered_at":"2026-06-11T05:31:53Z","spotify_id":"0yBzzceMXi6VMMXGJDqY9A","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c59b37aed17f3f0f20c3aaaa90c3af28aa177cfd51d662bda3e08e5d9ad9da. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0yBzzceMXi6VMMXGJDqY9A.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0yBzzceMXi6VMMXGJDqY9A.