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 0x9071af73b2e30463d751f2708827746ce39a5fbcb1f492c05dcce500a90f4800. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/72169e81-0d7f-4b99-b0ff-55a020a76ba3.json and https://artists.proofprofile.net/proofs/artist/72169e81-0d7f-4b99-b0ff-55a020a76ba3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x1f6f327c17b3f99403aac75a1450af46de13fb34252c2cad8d3170574fa94ed2. 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/51a6FbFNaAjpYmMSkyvcS0.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/51a6FbFNaAjpYmMSkyvcS0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f1cb187045ca1b0d69ab0a7d45ec1b629a1129315caf490fe3cdb639757f46. 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/3vMrsyjI7y1ndquT7LjA1I.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/3vMrsyjI7y1ndquT7LjA1I.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aee7a419b822432e99501d7a81b7456a6e8f84b4769307598f6941d0f00cad6. 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/6sYIhCqPaIA32j1d1ZZDNs.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/6sYIhCqPaIA32j1d1ZZDNs.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad1f0dbda9cb30151f291efc0fcfac847fb180dc5672e99326178ad7bd71fb2. 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/72sdWEwfQLCJPfOqzX94gq.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/72sdWEwfQLCJPfOqzX94gq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5301de03cac81acc7d1d31ca47fcccd81597dd07845bd2af97bb693ba8781a8e. 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/2TxZphexaNRXA0ARNBrq46.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/2TxZphexaNRXA0ARNBrq46.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf81ba71a5fd865706790b3a499020a528a5507dd712b4c99e7507524f2fa20a. 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/1iH2aMs4XYkSGr0fCb8oWw.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/1iH2aMs4XYkSGr0fCb8oWw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886b31a13089325d9c4097cc397e6744cbf85a9a8a5b2c58a48ffa0002dcf2c7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/334OrtWmo3CIgKNaQufkNv.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/334OrtWmo3CIgKNaQufkNv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156fbf68bd858a9066e8119bf2e3b7a9dbddcdc99df006841cfd2b4cd4d60727. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4JBowVC4i41m95NjOcqcvz.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/4JBowVC4i41m95NjOcqcvz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c32afce9ae22d94d0602f99f4a9504d9b8ff11f21851598a61b6980c5a71f1f. 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/12eHdQeqiYLSJtr9oC9bf5.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/12eHdQeqiYLSJtr9oC9bf5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591cb519260c76b8e011faefff43039edf8f5013a254febba4333852a81f768a. 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/5KwHsfUT7GqfACPESgfXKI.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/5KwHsfUT7GqfACPESgfXKI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443e1105cbd3648752266a9eaf345a9b885387c6ab6fdd1aea7451f68359eb1d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5gtihmMCICcM2efcda2rgk.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/5gtihmMCICcM2efcda2rgk.
{"copyright_id":"0x5fa128febf8526335a8c4f5a12ce860f3d58f3e8bad99ebd7ad54dad620e471d","isrc":"QM24S2307955","name":"Rio Conchal","registered_at":"2026-06-20T16:31:05Z","spotify_id":"3AasLYEvVEIBNL6ewEIUWJ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa128febf8526335a8c4f5a12ce860f3d58f3e8bad99ebd7ad54dad620e471d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3AasLYEvVEIBNL6ewEIUWJ.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/3AasLYEvVEIBNL6ewEIUWJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa2d2c733fd1a9cde945f84567afacbde0bc025eb584fabf7d745e3959b09a9. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2xrDySW9RoyU4QQV5B4wh4.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/2xrDySW9RoyU4QQV5B4wh4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ca098ee79d0483ff616705dee9ac45e02cbcb62f05ba13e2f9541129ce0716. 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/5T0xeXG4o1lucoeJA9LpJ5.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/5T0xeXG4o1lucoeJA9LpJ5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ab4ca975c4a128b37fecb00fed3f4215f17fa4543ac54abbd5c7633f125625. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/17qIXKxFpZi202AcduH2D7.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/17qIXKxFpZi202AcduH2D7.
{"copyright_id":"0x98d77283f4cb47ee04d68b4a362bc4c9ea7cbe5e5d8edf9bf3ca790ae767ab27","isrc":"GBKPL2137342","name":"Quiet Now","registered_at":"2026-06-11T23:03:11Z","spotify_id":"4d1omMAZub1Q3xmrhVy85K","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d77283f4cb47ee04d68b4a362bc4c9ea7cbe5e5d8edf9bf3ca790ae767ab27. 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/4d1omMAZub1Q3xmrhVy85K.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/4d1omMAZub1Q3xmrhVy85K.