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 0x415e52417c4f3639825f3ebb9a962ed0ae59a7c376df52b2b98cd3100909f660. 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/d9a096fc-1993-4925-8039-b213bbda8b51.json and https://artists.proofprofile.net/proofs/artist/d9a096fc-1993-4925-8039-b213bbda8b51.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Summertime (From "The Secret World of Arrietty")
Summertime (from "The Secret World of Arrietty")
{"copyright_id":"0x989bbbb913560cdc9d54dc81375520f5c195c3eb7604d29bd8aed0fe4a8e3565","isrc":"USHR11233902","name":"Top of the World","registered_at":"2026-06-26T17:28:39Z","spotify_id":"4aqYqsxqPPDP26a5UsycCn","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 0x989bbbb913560cdc9d54dc81375520f5c195c3eb7604d29bd8aed0fe4a8e3565. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4aqYqsxqPPDP26a5UsycCn.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/4aqYqsxqPPDP26a5UsycCn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247e353567df390a1a5423f6af3c3274a6eaa76e4904690143126ad5c447112c. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2cf7J1UCzelBOcfFgge3ae.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/2cf7J1UCzelBOcfFgge3ae.
{"copyright_id":"0x989bbbb913560cdc9d54dc81375520f5c195c3eb7604d29bd8aed0fe4a8e3565","isrc":"USHR11233902","name":"Top of the World","registered_at":"2026-06-26T17:28:39Z","spotify_id":"3OA4vryJzDRJ0qak7APfds","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989bbbb913560cdc9d54dc81375520f5c195c3eb7604d29bd8aed0fe4a8e3565. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3OA4vryJzDRJ0qak7APfds.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/3OA4vryJzDRJ0qak7APfds.
Ready or Not - DJ Mike D Remix - Extended Mixshow
{"copyright_id":"0x8a895c344cb39181cf508d2a7682fff45e1a43bddc3d8e73fb7d0c9947fde3df","isrc":"USHR11334727","name":"Hurricane - Alex Ghenea Remix","registered_at":"2026-06-29T00:10:06Z","spotify_id":"3T01X1ECu9omt9j0ImrvXk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a895c344cb39181cf508d2a7682fff45e1a43bddc3d8e73fb7d0c9947fde3df. 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/3T01X1ECu9omt9j0ImrvXk.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/3T01X1ECu9omt9j0ImrvXk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b646f370b8a4e3d6290f7151acbb61f74355cbffcd70eb95e981e226318731. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5ocrPzZr7VNIjHZIQdtSnn.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/5ocrPzZr7VNIjHZIQdtSnn.
Do You Miss Me at All (Marian Hill Remix)
Can't Bring This Down (Blended Babies Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3bef70d24175d2258a7d6df9386c2b4c0276936c23597a1ec69933a0eece3e2. 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/3KBQQwKznP7sihpCo6ywM5.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/3KBQQwKznP7sihpCo6ywM5.
We Can Change The World (Featuring Bridgit Mendler)
{"copyright_id":"0x16155e22605f9b03b3ebf041cf643f9bfa12add66fe8c61ebcd54127d9327dfc","isrc":"USHR11132652","name":"We Can Change The World (Featuring Bridgit Mendler)","registered_at":"2026-06-22T04:55:17Z","spotify_id":"69SDP0Kv6jj59gIlHWeGkE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16155e22605f9b03b3ebf041cf643f9bfa12add66fe8c61ebcd54127d9327dfc. 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/69SDP0Kv6jj59gIlHWeGkE.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/69SDP0Kv6jj59gIlHWeGkE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247e353567df390a1a5423f6af3c3274a6eaa76e4904690143126ad5c447112c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1E1OKc02DE0uzqI31aJsUZ.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/1E1OKc02DE0uzqI31aJsUZ.
{"copyright_id":"0x989bbbb913560cdc9d54dc81375520f5c195c3eb7604d29bd8aed0fe4a8e3565","isrc":"USHR11233902","name":"Top of the World","registered_at":"2026-06-26T17:28:39Z","spotify_id":"1EdYw8YIFfYPmqACxgWziP","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989bbbb913560cdc9d54dc81375520f5c195c3eb7604d29bd8aed0fe4a8e3565. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1EdYw8YIFfYPmqACxgWziP.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/1EdYw8YIFfYPmqACxgWziP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7e2976d1f8dd8b622b3405417acaa9839f541ede19554c593221021a2f8307. 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/2g3I7LWQvjnMeuXUZ4DeE2.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/2g3I7LWQvjnMeuXUZ4DeE2.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b646f370b8a4e3d6290f7151acbb61f74355cbffcd70eb95e981e226318731. 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/40jzLd0IiOdlPlgWCbJG8K.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/40jzLd0IiOdlPlgWCbJG8K.
Your Favorite Songs from 100 Disney Channel Original Movies
{"copyright_id":"0xc9adb828f1947bd4084ec6049d7b02a0a8bdae04cb91f7512c8ea7ef6a726437","isrc":"USWD11155812","name":"Determinate - From \"Lemonade Mouth\"","registered_at":"2026-06-10T15:50:48Z","spotify_id":"12AmiRz4BMfGnavDWpVtdM","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9adb828f1947bd4084ec6049d7b02a0a8bdae04cb91f7512c8ea7ef6a726437. 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/12AmiRz4BMfGnavDWpVtdM.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/12AmiRz4BMfGnavDWpVtdM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247e353567df390a1a5423f6af3c3274a6eaa76e4904690143126ad5c447112c. 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/62UxHvN6icAbrpzfBekb7c.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/62UxHvN6icAbrpzfBekb7c.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247e353567df390a1a5423f6af3c3274a6eaa76e4904690143126ad5c447112c. 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/0P7yKadIJtft3LYWTQ6Y4n.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/0P7yKadIJtft3LYWTQ6Y4n.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247e353567df390a1a5423f6af3c3274a6eaa76e4904690143126ad5c447112c. 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/4Eojx9KNCQ7QDxasRVPHku.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/4Eojx9KNCQ7QDxasRVPHku.
Disney 2000s, Vol. 3: Disney Channel Theme Songs
{"copyright_id":"0xc9adb828f1947bd4084ec6049d7b02a0a8bdae04cb91f7512c8ea7ef6a726437","isrc":"USWD11155812","name":"Determinate - From \"Lemonade Mouth\"","registered_at":"2026-06-10T15:50:48Z","spotify_id":"7nB4puiE0wypWBErOg5uBN","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9adb828f1947bd4084ec6049d7b02a0a8bdae04cb91f7512c8ea7ef6a726437. 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/7nB4puiE0wypWBErOg5uBN.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/7nB4puiE0wypWBErOg5uBN.
Hang In There Baby - From "Good Luck Charlie"
{"copyright_id":"0x6fc016069c70202e50cd53852c40457ae146581603e757a3ebed9f890b58d408","isrc":"USWD11263837","name":"Hang In There Baby - From \"Good Luck Charlie\"","registered_at":"2026-06-04T12:42:49Z","spotify_id":"1d4UvOBL2auYqcDg8yZa56","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc016069c70202e50cd53852c40457ae146581603e757a3ebed9f890b58d408. 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/1d4UvOBL2auYqcDg8yZa56.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/1d4UvOBL2auYqcDg8yZa56.