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 0xe5f6c800931dea03ea3522944d698329293c250ec0565a4c438517dd61dfc9aa. 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/2fed5dcb-ebb1-42a4-86d1-2ed463eceb4e.json and https://artists.proofprofile.net/proofs/artist/2fed5dcb-ebb1-42a4-86d1-2ed463eceb4e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Enter The Wu-Tang (36 Chambers) [Expanded Edition]
{"copyright_id":"0x5eda5976d870adcd54cfde72b8a5ec8af44b9c1d6a4412ff7efbf8d6a584617f","isrc":"USRC19300126","name":"Bring Da Ruckus","registered_at":"2026-06-01T16:05:47Z","spotify_id":"1v5cgIyffYtfEx0swttdoE","type":"track"}
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 0x5eda5976d870adcd54cfde72b8a5ec8af44b9c1d6a4412ff7efbf8d6a584617f. 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/1v5cgIyffYtfEx0swttdoE.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/1v5cgIyffYtfEx0swttdoE.
{"copyright_id":"0xa6e222f4579323b12c248bdd0e8b5d90f6d50cbffcbab7e7ff2c6ab9519c0c14","isrc":"USRC19300127","name":"Shame On a Nigga","registered_at":"2026-06-01T15:40:16Z","spotify_id":"7IwURvEfVcdxUCjLKUu6sv","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e222f4579323b12c248bdd0e8b5d90f6d50cbffcbab7e7ff2c6ab9519c0c14. 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/7IwURvEfVcdxUCjLKUu6sv.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/7IwURvEfVcdxUCjLKUu6sv.
{"copyright_id":"0x069bfa01071116adc5ad05f08b4b531eebe7bf3787658b16811bae86a80f6099","isrc":"USRC19300128","name":"Clan In Da Front","registered_at":"2026-06-04T06:45:23Z","spotify_id":"4LaiF2h7gsybmURceGYLqh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069bfa01071116adc5ad05f08b4b531eebe7bf3787658b16811bae86a80f6099. 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/4LaiF2h7gsybmURceGYLqh.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/4LaiF2h7gsybmURceGYLqh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb826611965a68312ec6dbe16ef86ad30d703d1de0f232644a15772a204d6824. 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/5wcY4XgawQ2se8VjDLhedQ.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/5wcY4XgawQ2se8VjDLhedQ.
{"copyright_id":"0xa550af13e5c7959ef2b252ddd0e8072ecd5cd052f598fe02f30b12647021efec","isrc":"USRC19300130","name":"Can It Be All So Simple / Intermission","registered_at":"2026-06-04T07:00:23Z","spotify_id":"1Mi6uegC4pRxQZw1CB5Fk9","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa550af13e5c7959ef2b252ddd0e8072ecd5cd052f598fe02f30b12647021efec. 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/1Mi6uegC4pRxQZw1CB5Fk9.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/1Mi6uegC4pRxQZw1CB5Fk9.
{"copyright_id":"0xb651d2ce16ac89c8164607d414d2dca7a84bd663011919312786ca1c6cba7cc6","isrc":"USRC19300131","name":"Da Mystery of Chessboxin'","registered_at":"2026-06-01T15:08:46Z","spotify_id":"4xOTVtbCPcfxMs2hSt9D6i","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb651d2ce16ac89c8164607d414d2dca7a84bd663011919312786ca1c6cba7cc6. 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/4xOTVtbCPcfxMs2hSt9D6i.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/4xOTVtbCPcfxMs2hSt9D6i.
{"copyright_id":"0xd2d2f237ed14910b341e0dd1137c17dd7e1e4df2c94409a02aaa008b251a7d27","isrc":"USRC19300132","name":"Wu-Tang Clan Ain't Nuthing ta F' Wit","registered_at":"2026-06-01T10:41:45Z","spotify_id":"24vNw0Z0srb4zYXwrakw8E","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d2f237ed14910b341e0dd1137c17dd7e1e4df2c94409a02aaa008b251a7d27. 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/24vNw0Z0srb4zYXwrakw8E.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/24vNw0Z0srb4zYXwrakw8E.
C.R.E.A.M. (Cash Rules Everything Around Me)
{"copyright_id":"0xa28f88cd9b763d6344adf12e9da9e0a5818c9cebaebb29db28c1fdbd59dd7253","isrc":"USRC19300133","name":"C.R.E.A.M. (Cash Rules Everything Around Me)","registered_at":"2026-06-01T04:49:27Z","spotify_id":"119c93MHjrDLJTApCVGpvx","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28f88cd9b763d6344adf12e9da9e0a5818c9cebaebb29db28c1fdbd59dd7253. 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/119c93MHjrDLJTApCVGpvx.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/119c93MHjrDLJTApCVGpvx.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64deffbe26375e25a3ed67448e4269d578492329fadc160a8b51a4b7bd2d95e. 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/5XLC8xoqyua4U7wJiZAWik.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/5XLC8xoqyua4U7wJiZAWik.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208a14661b8f4b497070bce30a4d71e55249449d884c577221380ab760a23702. 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/1Sgj10byiGzPpI2IrXSFEn.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/1Sgj10byiGzPpI2IrXSFEn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aaf3011a95ef60d861a43ab2b28d849c19a5f7180f750c8bb0147780195cf40. 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/7y5zXpTN4J7K0PngQYa655.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/7y5zXpTN4J7K0PngQYa655.
Wu-Tang: 7th Chamber - Part II - Conclusion
{"copyright_id":"0xe18e4c37f7aca25cc0dd47f313b42340b1fd920e40e8fd83ed915134b9b5040f","isrc":"USRC19300137","name":"Wu-Tang: 7th Chamber - Part II - Conclusion","registered_at":"2026-06-04T09:16:06Z","spotify_id":"4mkdUdHTDfnbcie1vSmbCK","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18e4c37f7aca25cc0dd47f313b42340b1fd920e40e8fd83ed915134b9b5040f. 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/4mkdUdHTDfnbcie1vSmbCK.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/4mkdUdHTDfnbcie1vSmbCK.
{"copyright_id":"0xdc3f9f8910ff6190914d564041faedfa744b6711a93e916010f2dce5227782be","isrc":"USRC19302942","name":"Protect Ya Neck - Shao Lin Version","registered_at":"2026-06-04T10:43:16Z","spotify_id":"5UqXzkzU4CyIhaCmWHgS09","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3f9f8910ff6190914d564041faedfa744b6711a93e916010f2dce5227782be. 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/5UqXzkzU4CyIhaCmWHgS09.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/5UqXzkzU4CyIhaCmWHgS09.
{"copyright_id":"0xf66f84feed074966a85e7d7a2d831e7fd276ae7fbda35a01218a103e152cf86e","isrc":"USRC19306053","name":"Method Man - Home Grown Version","registered_at":"2026-06-04T11:52:08Z","spotify_id":"1c3zgIrrFkhnavRt20lsqu","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66f84feed074966a85e7d7a2d831e7fd276ae7fbda35a01218a103e152cf86e. 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/1c3zgIrrFkhnavRt20lsqu.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/1c3zgIrrFkhnavRt20lsqu.
C.R.E.A.M. (Cash Rules Everything Around Me) - A Cappella
{"copyright_id":"0x8d2895d33608e5fc97ed5cb6eb9bf07d3a0ed89d9b7584ed95d99be17ae62149","isrc":"USRC19300279","name":"C.R.E.A.M. (Cash Rules Everything Around Me) - A Cappella","registered_at":"2026-06-05T06:48:34Z","spotify_id":"61QU5MPwOReHIAfnY4vh54","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2895d33608e5fc97ed5cb6eb9bf07d3a0ed89d9b7584ed95d99be17ae62149. 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/61QU5MPwOReHIAfnY4vh54.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/61QU5MPwOReHIAfnY4vh54.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b31bdfedde9ef593970f23b73787cf9b07a308f9bf83a7e94efc1ccf1da67a3. 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/44go3ZmDNtKdfCc15IseAx.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/44go3ZmDNtKdfCc15IseAx.
{"copyright_id":"0x8cb5b35c5db220d0c703f0cf40c6a72fa5a217d5442caa16a7963c7a483e8349","isrc":"USLR50000436","name":"Wu-Tang Clan Ain't Nothing Ta F**K Wit","registered_at":"2026-06-04T13:19:14Z","spotify_id":"66ZZ9lN9KKiA8zplDXM7GX","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb5b35c5db220d0c703f0cf40c6a72fa5a217d5442caa16a7963c7a483e8349. 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/66ZZ9lN9KKiA8zplDXM7GX.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/66ZZ9lN9KKiA8zplDXM7GX.
C.R.E.A.M. (Cash Rules Everything Around Me) - Radio Edit
Hip Hop 100 Hits - Urban rap & R n B anthems inc. Jay Z, A$ap Rocky, Wu-Tang Clan & Nas
{"copyright_id":"0x7b38fa6e1fde6fb87264a4725b11a66131f204e01539952cce822ee060e23473","isrc":"USRC19300278","name":"C.R.E.A.M. (Cash Rules Everything Around Me) - Radio Edit","registered_at":"2026-06-07T06:25:50Z","spotify_id":"3kHmh2mxp4g5o1CkRw1gI6","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b38fa6e1fde6fb87264a4725b11a66131f204e01539952cce822ee060e23473. 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/3kHmh2mxp4g5o1CkRw1gI6.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/3kHmh2mxp4g5o1CkRw1gI6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a85ee10dd951f98ac8db4a40e2bf486b038e4c7f58fd304b6b99159355ab78. 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/44iN9nb1pcnLqtd8ysARd7.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/44iN9nb1pcnLqtd8ysARd7.
Gravel Pit (feat. RZA, Method Man, Ghostface Killah, Raekwon & U-God)
{"copyright_id":"0x3637417278fd00b5269d9c03e832d224a9c3fb39fb6784bbe37268dece3d4e66","isrc":"USLR50000691","name":"Gravel Pit (feat. RZA, Method Man, Ghostface Killah, Raekwon & U-God)","registered_at":"2026-06-09T15:46:10Z","spotify_id":"6JeO4dFdnODSVssd2YX9bW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3637417278fd00b5269d9c03e832d224a9c3fb39fb6784bbe37268dece3d4e66. 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/6JeO4dFdnODSVssd2YX9bW.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/6JeO4dFdnODSVssd2YX9bW.