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 0x9cd3b4fed0356a040978c7c12d0f9e7b0a3f4a624ff2a0db2f26a3f5fe101cb0. 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/eed0f7ad-232c-47b6-9a2d-d1e9204477f0.json and https://artists.proofprofile.net/proofs/artist/eed0f7ad-232c-47b6-9a2d-d1e9204477f0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xe77e0a18be2a46addb298d36c221a36df39f6d8260917c02a24c7b3240b3ecc4","isrc":"USIR20400268","name":"Jenny Was A Friend Of Mine","registered_at":"2026-06-01T15:23:09Z","spotify_id":"60eVCXFCuw1WYswBuNZc4H","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 0xe77e0a18be2a46addb298d36c221a36df39f6d8260917c02a24c7b3240b3ecc4. 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/60eVCXFCuw1WYswBuNZc4H.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/60eVCXFCuw1WYswBuNZc4H.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9ebad93b17d301e948fc7888b0ac237528fc88cd300676db9e2cdbe6f7438f. 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/003vvx7Niy0yvhvHt4a68B.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/003vvx7Niy0yvhvHt4a68B.
{"copyright_id":"0x239d12f3157cea0158bc565b1bc197ff714ca7179669f4526c580b26c9064b0c","isrc":"USIR20400275","name":"Smile Like You Mean It","registered_at":"2026-06-01T07:21:27Z","spotify_id":"3KANrKOFYyAxfjQJHkgBdb","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239d12f3157cea0158bc565b1bc197ff714ca7179669f4526c580b26c9064b0c. 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/3KANrKOFYyAxfjQJHkgBdb.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/3KANrKOFYyAxfjQJHkgBdb.
{"copyright_id":"0x27dfa8f5f07044a43f440efeba1ce1d0cb89e71c961a5a44b869b56e744c8e63","isrc":"USIR20400269","name":"All These Things That I've Done","registered_at":"2026-06-01T05:02:35Z","spotify_id":"5vollujufHY0jMZxx77VWr","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27dfa8f5f07044a43f440efeba1ce1d0cb89e71c961a5a44b869b56e744c8e63. 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/5vollujufHY0jMZxx77VWr.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/5vollujufHY0jMZxx77VWr.
{"copyright_id":"0x7ae0c645b3450fcb93c2322f56feae70f78a1a42a6c98a3fc79bb76b7b391e38","isrc":"USIR20400270","name":"Andy, You're A Star","registered_at":"2026-06-04T08:12:54Z","spotify_id":"6BnY0YochAURSXSR3d5N7O","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae0c645b3450fcb93c2322f56feae70f78a1a42a6c98a3fc79bb76b7b391e38. 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/6BnY0YochAURSXSR3d5N7O.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/6BnY0YochAURSXSR3d5N7O.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ec469fb381a06960a0ee0dc4ed4ebd71171e06135f26d5a43d62fdf568af1e. 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/3OMw6qj95yhfeqBIdL0c1g.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/3OMw6qj95yhfeqBIdL0c1g.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0265bf5f1e0599bc1c81e7754ce67dac71798f55fb421e18c4fe76daf44881b. 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/2N7TN76tLuTcdn9UlS8ADT.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/2N7TN76tLuTcdn9UlS8ADT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9b49d7a821b805bba57a8f162abe44d36498815e7d1a35bd35140840b47b75. 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/7gS9H5JtkJZgUZBq5mWY4P.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/7gS9H5JtkJZgUZBq5mWY4P.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f6686d47d0fb53af7677d94e4d3a006388a00257dbfcd44ea384a1660b79a1. 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/4gAhDQjQT9rReQk5NoaiED.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/4gAhDQjQT9rReQk5NoaiED.
{"copyright_id":"0x889528d8c7fa3dfb3feb1c2e2c2f68320b421ac32e6cc87080873beaaf8e38ad","isrc":"USIR20400277","name":"Everything Will Be Alright","registered_at":"2026-06-04T10:30:40Z","spotify_id":"3nFhiJReGYBDoqArWW3p5e","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889528d8c7fa3dfb3feb1c2e2c2f68320b421ac32e6cc87080873beaaf8e38ad. 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/3nFhiJReGYBDoqArWW3p5e.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/3nFhiJReGYBDoqArWW3p5e.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f70459a431ff0643ee29bb6008e82cc9b19cb37366237e3fb1a117a541f7455. 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/0751ozQYIiLVQ9FRFhe55j.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/0751ozQYIiLVQ9FRFhe55j.
{"copyright_id":"0x2b1e301efcf58a0e2c19c5b2d6f47b888b9d49c59719e9c54665ae8a1ea7e843","isrc":"USUM70605164","name":"When You Were Young","registered_at":"2026-06-01T03:48:30Z","spotify_id":"70wYA8oYHoMzhRRkARoMhU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1e301efcf58a0e2c19c5b2d6f47b888b9d49c59719e9c54665ae8a1ea7e843. 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/70wYA8oYHoMzhRRkARoMhU.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/70wYA8oYHoMzhRRkARoMhU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee39ae62470f647eea029167babcfad26b8f1811777464662a7684023eee05f8. 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/5aWhs651KYM26HYM16kRdk.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/5aWhs651KYM26HYM16kRdk.
{"copyright_id":"0xab9ebad93b17d301e948fc7888b0ac237528fc88cd300676db9e2cdbe6f7438f","isrc":"USIR20400274","name":"Mr. Brightside","registered_at":"2026-06-01T02:38:40Z","spotify_id":"7oK9VyNzrYvRFo7nQEYkWN","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9ebad93b17d301e948fc7888b0ac237528fc88cd300676db9e2cdbe6f7438f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7oK9VyNzrYvRFo7nQEYkWN.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/7oK9VyNzrYvRFo7nQEYkWN.
{"copyright_id":"0xa70f076eec4fb32ccd07c6876cb8f2004a00d7f7f769c1dae1975f0eac100a5c","isrc":"USIR20400195","name":"Somebody Told Me","registered_at":"2026-06-01T03:13:38Z","spotify_id":"6PwjJ58I4t7Mae9xfZ9l9v","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70f076eec4fb32ccd07c6876cb8f2004a00d7f7f769c1dae1975f0eac100a5c. 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/6PwjJ58I4t7Mae9xfZ9l9v.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/6PwjJ58I4t7Mae9xfZ9l9v.
All the Things That I've Done - Live at Live 8, Hyde Park, London, 2nd July 2005
{"copyright_id":"0xb5bfb5401a50e13fd842542377e7780a3b24d7daf950225e684b7353415fd73e","isrc":"UK6821903050","name":"All the Things That I've Done - Live at Live 8, Hyde Park, London, 2nd July 2005","registered_at":"2026-06-06T22:46:04Z","spotify_id":"5pTOT4arzGVI3xBYJsYpfk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5bfb5401a50e13fd842542377e7780a3b24d7daf950225e684b7353415fd73e. 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/5pTOT4arzGVI3xBYJsYpfk.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/5pTOT4arzGVI3xBYJsYpfk.
{"copyright_id":"0xab9ebad93b17d301e948fc7888b0ac237528fc88cd300676db9e2cdbe6f7438f","isrc":"USIR20400274","name":"Mr. Brightside","registered_at":"2026-06-01T02:38:40Z","spotify_id":"7cvBs2zscnxzhNc4WLAjZv","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9ebad93b17d301e948fc7888b0ac237528fc88cd300676db9e2cdbe6f7438f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7cvBs2zscnxzhNc4WLAjZv.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/7cvBs2zscnxzhNc4WLAjZv.
{"copyright_id":"0xa70f076eec4fb32ccd07c6876cb8f2004a00d7f7f769c1dae1975f0eac100a5c","isrc":"USIR20400195","name":"Somebody Told Me","registered_at":"2026-06-01T03:13:38Z","spotify_id":"5bF7JQsPJkYy8Kblv2cIiO","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70f076eec4fb32ccd07c6876cb8f2004a00d7f7f769c1dae1975f0eac100a5c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5bF7JQsPJkYy8Kblv2cIiO.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/5bF7JQsPJkYy8Kblv2cIiO.
{"copyright_id":"0x6a41fdd9290cafc16756c6661ba5a90a5c188b96febb0ad2e7a530a63cef07a3","isrc":"USUM71311841","name":"Shot At The Night","registered_at":"2026-06-20T02:15:53Z","spotify_id":"47VnuW2PrSyHAd8Y7T0Z1I","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a41fdd9290cafc16756c6661ba5a90a5c188b96febb0ad2e7a530a63cef07a3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/47VnuW2PrSyHAd8Y7T0Z1I.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/47VnuW2PrSyHAd8Y7T0Z1I.