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 0xe308bec991343660b8176ccee56265cb71a7c63ff2917544ce7eb9a7101022a1. 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/aa669cdc-b9d8-4519-aba7-b31eaac9364d.json and https://artists.proofprofile.net/proofs/artist/aa669cdc-b9d8-4519-aba7-b31eaac9364d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x217802fcf4ef5bda275b880eb3b5fd4884bbe289a6b1f5dc1424a9aa04927674","isrc":"QM24S2401841","name":"Those Days (OurVinyl Sessions)","registered_at":"2026-06-07T06:48:47Z","spotify_id":"3SHdD4rckl6iFaHQ4kqfiP","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 0x217802fcf4ef5bda275b880eb3b5fd4884bbe289a6b1f5dc1424a9aa04927674. 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/3SHdD4rckl6iFaHQ4kqfiP.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/3SHdD4rckl6iFaHQ4kqfiP.
{"copyright_id":"0xdd8f22c27e1f1f8f9de0b450193cdb3851dfc7835453ba3c2a83e694886a9313","isrc":"QM24S2401840","name":"Man I Am (OurVinyl Sessions)","registered_at":"2026-06-07T06:47:04Z","spotify_id":"2R2XSUN3yap0ZHbDxuwCz0","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8f22c27e1f1f8f9de0b450193cdb3851dfc7835453ba3c2a83e694886a9313. 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/2R2XSUN3yap0ZHbDxuwCz0.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/2R2XSUN3yap0ZHbDxuwCz0.
{"copyright_id":"0xbfa36890f7d9c1372cb1743bd19f3c4c61ac7e9e0abfc58d128181700de75851","isrc":"QM24S2401839","name":"October (OurVinyl Sessions)","registered_at":"2026-06-05T12:06:18Z","spotify_id":"1KEtxTdLKCFn1WiX9OtMfd","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa36890f7d9c1372cb1743bd19f3c4c61ac7e9e0abfc58d128181700de75851. 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/1KEtxTdLKCFn1WiX9OtMfd.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/1KEtxTdLKCFn1WiX9OtMfd.
{"copyright_id":"0xacd253e43dc79fcb5eed1fe1e1cdc7f21e695aeb464eda5034035cf182dabce3","isrc":"QM24S2401838","name":"Stay Home Tonight (OurVinyl Sessions)","registered_at":"2026-06-06T16:49:21Z","spotify_id":"2kWTsf6wE46T5cqvXMDFkT","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd253e43dc79fcb5eed1fe1e1cdc7f21e695aeb464eda5034035cf182dabce3. 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/2kWTsf6wE46T5cqvXMDFkT.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/2kWTsf6wE46T5cqvXMDFkT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9f76026d0c4640fd2cb322380374ce76ccf99162e33d71ae37d499cb565829. 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/7n2wqlhuiB5ylyjfCzhOyf.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/7n2wqlhuiB5ylyjfCzhOyf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c63d7109b715425c855c15367b0934327c105f3a8704ab4524742b7aae13337. 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/39922JLMnfyih7w2GcKgQu.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/39922JLMnfyih7w2GcKgQu.
{"copyright_id":"0x06dc1a972cbd57227eae315efbe2b043af1b46ebf7655d8f9ebf4b92be338336","isrc":"QZNWW2349056","name":"Stay Home Tonight","registered_at":"2026-06-06T11:45:28Z","spotify_id":"0Ir7u9DSxUnCutJbhYrDFX","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06dc1a972cbd57227eae315efbe2b043af1b46ebf7655d8f9ebf4b92be338336. 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/0Ir7u9DSxUnCutJbhYrDFX.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/0Ir7u9DSxUnCutJbhYrDFX.
{"copyright_id":"0xfe4aa7b804e52e16b9cca0030d45c9200cafd6eeacdf72f5d1268ad6bd5d5801","isrc":"QZDA82324531","name":"The Light","registered_at":"2026-06-09T09:24:41Z","spotify_id":"0yR3qIIgtfTvv4bTXayP0m","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4aa7b804e52e16b9cca0030d45c9200cafd6eeacdf72f5d1268ad6bd5d5801. 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/0yR3qIIgtfTvv4bTXayP0m.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/0yR3qIIgtfTvv4bTXayP0m.
{"copyright_id":"0x0f08c37f974e38d33b65bdf0273af3e16a8d8f06adf36999bf3ae4e3b77da703","isrc":"QZK6L2154511","name":"Take Me As I Am","registered_at":"2026-06-07T21:03:56Z","spotify_id":"3zXaXt0JTrlPxldcTqeUZU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f08c37f974e38d33b65bdf0273af3e16a8d8f06adf36999bf3ae4e3b77da703. 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/3zXaXt0JTrlPxldcTqeUZU.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/3zXaXt0JTrlPxldcTqeUZU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc5bcc10205021eba2091e777dc713e5b89b413d047ea9e9bb5438e4961f5c8. 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/3IjKVD150pLVhUGB9o5se3.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/3IjKVD150pLVhUGB9o5se3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25541128f31190a049a1a52f57604f952f49b17b83915bc4a237913831c0ed05. 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/3mnmyG7tokxBfBJ84CdGes.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/3mnmyG7tokxBfBJ84CdGes.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58977db4448b21e7fa3c9f4f64323d536416b242c2de474a6b789162c349c88. 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/60wHCcJmzdqp1YrEd1H6eZ.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/60wHCcJmzdqp1YrEd1H6eZ.
{"copyright_id":"0x8e79e65dfbb6959ee59ca2cae9ddbdb202b6251b084d6b70cdd23141b91de76c","isrc":"QZDA71922525","name":"Man I Am","registered_at":"2026-06-06T05:20:52Z","spotify_id":"7hTfVsicXBc5a9Hs1hFR1H","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e79e65dfbb6959ee59ca2cae9ddbdb202b6251b084d6b70cdd23141b91de76c. 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/7hTfVsicXBc5a9Hs1hFR1H.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/7hTfVsicXBc5a9Hs1hFR1H.