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 0x705e3365c165df0813d519d5579a3a2b47a1124090c800c4d02478c5faa03d75. 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/af5eb401-96e6-4001-b443-415d76c37dec.json and https://artists.proofprofile.net/proofs/artist/af5eb401-96e6-4001-b443-415d76c37dec.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 0x427c3f7791fb9109af978d15043c336e22c0f3f1428a9eb778c96e3dc07f87b2. 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/2FpSi2eJ6iUmVVvbkCwa7r.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/2FpSi2eJ6iUmVVvbkCwa7r.
{"copyright_id":"0x5e0d1a32a2ebf42ce2eb889550a61f64fed9608391ac98da3bab34620c02e7af","isrc":"USSK31524214","name":"More Than Survive","registered_at":"2026-06-04T14:28:08Z","spotify_id":"7EdMb1sjy4hvfknBYoTCth","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0d1a32a2ebf42ce2eb889550a61f64fed9608391ac98da3bab34620c02e7af. 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/7EdMb1sjy4hvfknBYoTCth.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/7EdMb1sjy4hvfknBYoTCth.
{"copyright_id":"0x9cc282f6783bda59ed6c56abe1ebee651bb5185dcd24dfdc9f4f78e5638a07fc","isrc":"USSK31524217","name":"Two-Player Game","registered_at":"2026-06-05T06:51:11Z","spotify_id":"6bvUuRj5uGEifCp9pB9jed","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc282f6783bda59ed6c56abe1ebee651bb5185dcd24dfdc9f4f78e5638a07fc. 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/6bvUuRj5uGEifCp9pB9jed.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/6bvUuRj5uGEifCp9pB9jed.
{"copyright_id":"0x72ea2633cca12124b882381b8fabb69ed083ca2e2a5e5e8064ff835ad8567ab5","isrc":"USSK31524228","name":"Michael in the Bathroom","registered_at":"2026-06-04T07:00:07Z","spotify_id":"1L3wn1FJHmnv9OpjVbkMzY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ea2633cca12124b882381b8fabb69ed083ca2e2a5e5e8064ff835ad8567ab5. 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/1L3wn1FJHmnv9OpjVbkMzY.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/1L3wn1FJHmnv9OpjVbkMzY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f01248ddd2c39344a07b18a22983448e4cebb41c4fea88013f8b010813f2b7b. 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/1E2miwRfu4hZChzUmGdcy3.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/1E2miwRfu4hZChzUmGdcy3.
Disney's Snow White (Japanese Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77100ce80b2d9f8987fd7a3972da53632e2603cc882191958ccb6fdb63eeb1b7. 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/2np5OFtV6vJwueMIIcIXi2.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/2np5OFtV6vJwueMIIcIXi2.
Disney's Snow White (Japanese Original Motion Picture Soundtrack/Deluxe Edition)
{"copyright_id":"0x77100ce80b2d9f8987fd7a3972da53632e2603cc882191958ccb6fdb63eeb1b7","isrc":"USWD12536528","name":"The Silly Song","registered_at":"2026-06-04T08:24:54Z","spotify_id":"1C2GxLCrYePFTnDVaMnsUA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77100ce80b2d9f8987fd7a3972da53632e2603cc882191958ccb6fdb63eeb1b7. 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/1C2GxLCrYePFTnDVaMnsUA.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/1C2GxLCrYePFTnDVaMnsUA.
Disney's Snow White (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff7045c19fe40dedd1ec76479d3f066990b5c13d43efd829584ffe62bba9e4c. 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/3afQZM1C9U7UUxkYwi3OJ8.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/3afQZM1C9U7UUxkYwi3OJ8.
{"copyright_id":"0x9ed35a0fb5f87ce13ed4ff6e0f4855ea16b7defed426aa003bfd041debdf7e1a","isrc":"USWD12536526","name":"Whistle While You Work","registered_at":"2026-06-01T16:01:50Z","spotify_id":"1lktTOx5E0xfOV6bTG7sjd","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed35a0fb5f87ce13ed4ff6e0f4855ea16b7defed426aa003bfd041debdf7e1a. 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/1lktTOx5E0xfOV6bTG7sjd.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/1lktTOx5E0xfOV6bTG7sjd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77100ce80b2d9f8987fd7a3972da53632e2603cc882191958ccb6fdb63eeb1b7. 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/1gBfVqpApxK0e3ebCQbsdB.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/1gBfVqpApxK0e3ebCQbsdB.
Disney's Snow White (Original Motion Picture Soundtrack/Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff7045c19fe40dedd1ec76479d3f066990b5c13d43efd829584ffe62bba9e4c. 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/4XPxTYRwVqTyUuL0QyRZyJ.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/4XPxTYRwVqTyUuL0QyRZyJ.
{"copyright_id":"0x9ed35a0fb5f87ce13ed4ff6e0f4855ea16b7defed426aa003bfd041debdf7e1a","isrc":"USWD12536526","name":"Whistle While You Work","registered_at":"2026-06-03T04:53:11Z","spotify_id":"3xArkYv2FITEVvORzhfwyl","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed35a0fb5f87ce13ed4ff6e0f4855ea16b7defed426aa003bfd041debdf7e1a. 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/3xArkYv2FITEVvORzhfwyl.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/3xArkYv2FITEVvORzhfwyl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77100ce80b2d9f8987fd7a3972da53632e2603cc882191958ccb6fdb63eeb1b7. 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/3ogIGAWDEhiyZ73FpzBeDY.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/3ogIGAWDEhiyZ73FpzBeDY.