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 0xeed16ec43c4cd724b8c5f8175f926a32448d4949b06017a7d73c2518d1e6449d. 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/f2a1d922-d922-499d-8099-b1851d98c4ca.json and https://artists.proofprofile.net/proofs/artist/f2a1d922-d922-499d-8099-b1851d98c4ca.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0xf53f198278e7ae3e6e67a8f3aa4d150d53762b6ad416c652d685008d44f9681c. 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/1HpJUs9GdcJx8bMGOTfFqD.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/1HpJUs9GdcJx8bMGOTfFqD.
{"copyright_id":"0x0a179fd3fb22301e0a688018ded3d56b39f0994f7d8f0564e3ac150e2a5907b5","isrc":"QZXLZ2509524","name":"Reproches al Viento","registered_at":"2026-06-22T19:02:09Z","spotify_id":"5BmO9OFnipjI2WviTZ7LAh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a179fd3fb22301e0a688018ded3d56b39f0994f7d8f0564e3ac150e2a5907b5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5BmO9OFnipjI2WviTZ7LAh.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/5BmO9OFnipjI2WviTZ7LAh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08644d508c5895786ed7d0b9a9b2c146778f6cca4b0e4252799293f0674545fe. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2OjbSgV2QatyeIZXkeeGYl.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/2OjbSgV2QatyeIZXkeeGYl.
{"copyright_id":"0x18610070eb269ede02c2adfa71e6d5e771d62a1fe486296e05297837d76b1dec","isrc":"QZXLZ2509528","name":"La Balanza de la Vida","registered_at":"2026-06-25T06:58:38Z","spotify_id":"4Nv2LIQx4vA9Dfi6EDoIwC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18610070eb269ede02c2adfa71e6d5e771d62a1fe486296e05297837d76b1dec. 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/4Nv2LIQx4vA9Dfi6EDoIwC.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/4Nv2LIQx4vA9Dfi6EDoIwC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6fbf97c3e0c12e9dc7ac1744fc73564b39175bd705e5c6e3312ca2240ab4b9. 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/3vmYf98z8Ucdns2MBUc5Tq.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/3vmYf98z8Ucdns2MBUc5Tq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa421ea71c24399a2907c537aea167e630d21e79d07eba5b0e108496270b7990. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7cAo23qammfEGKpLRqx6ww.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/7cAo23qammfEGKpLRqx6ww.
{"copyright_id":"0x71caea98dac7e52ad22a77688410e6e88ca4bad5336734112ae9e33a90b65ddc","isrc":"QZXLZ2509533","name":"Cuando te Acuerdes de Mí","registered_at":"2026-06-25T06:59:06Z","spotify_id":"0JekITBW3JCc9q1VU4WFIr","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71caea98dac7e52ad22a77688410e6e88ca4bad5336734112ae9e33a90b65ddc. 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/0JekITBW3JCc9q1VU4WFIr.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/0JekITBW3JCc9q1VU4WFIr.
{"copyright_id":"0x96ec7722b6c1e90616753b7ee466995159e4cdc66908f09ac2e851bcd2ef8512","isrc":"QZXLZ2509534","name":"Con Cartitas y Palabras","registered_at":"2026-06-20T18:57:53Z","spotify_id":"3aZ3cfeMilfsEOxxb0IOZS","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ec7722b6c1e90616753b7ee466995159e4cdc66908f09ac2e851bcd2ef8512. 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/3aZ3cfeMilfsEOxxb0IOZS.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/3aZ3cfeMilfsEOxxb0IOZS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa63c2735f08584482c3aba69a77d8200d9bbc5178296622e803aca335334784. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/08BY6gEboFralxAYcLIJR7.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/08BY6gEboFralxAYcLIJR7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc461c29b603f98f7a70fea073f592902d7b8df1f6b223330c63e3d923efa928f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6m80ZrsslumTmE5rQ423P8.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/6m80ZrsslumTmE5rQ423P8.
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{"copyright_id":"0x0aa3c0dc2f4075d1d6cee3b2c4abd7277a7878758e826f38e6fc0d09de40b99f","isrc":"QZZ972438094","name":"Te Quiero, Te Amo, Te Extraño","registered_at":"2026-06-07T15:51:57Z","spotify_id":"47sGOt07ed1MN78olkt7d8","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa3c0dc2f4075d1d6cee3b2c4abd7277a7878758e826f38e6fc0d09de40b99f. 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/47sGOt07ed1MN78olkt7d8.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/47sGOt07ed1MN78olkt7d8.