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 0xe5bad9942c2150220eeb1ab7843957d7d63459715f3237219345db0dd2f2f30b. 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/beb34c65-045a-471c-bd70-c1c299b901b0.json and https://artists.proofprofile.net/proofs/artist/beb34c65-045a-471c-bd70-c1c299b901b0.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 0x96b4432d7e02877879a08a80aec18c33be63716cffd3c7d8f739126b49315085. 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/1DTuA87dyw72Sn9bldhp2z.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/1DTuA87dyw72Sn9bldhp2z.
{"copyright_id":"0x0903659c53b5d326e1e050ff54be9f136eb0f6e99e11f742d95768538b92de05","isrc":"USUYG1034831","name":"We're All In The Same Gang","registered_at":"2026-06-04T15:27:06Z","spotify_id":"62fQHIiTsimptHHliO8nOn","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0903659c53b5d326e1e050ff54be9f136eb0f6e99e11f742d95768538b92de05. 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/62fQHIiTsimptHHliO8nOn.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/62fQHIiTsimptHHliO8nOn.
ドライブが楽しくなる洋楽ヒッツ！80年代 Hip Hop
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe090f1dfa606cda4132cfa192769b5dedc08d35a3a9e176015abdba7f654ab1. 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/6rwUlhBm0kdavivjZ2b3sT.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/6rwUlhBm0kdavivjZ2b3sT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe090f1dfa606cda4132cfa192769b5dedc08d35a3a9e176015abdba7f654ab1. 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/5GPWt9EFrHwMrT7QgsLHk6.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/5GPWt9EFrHwMrT7QgsLHk6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed2f68336a06b7806c3d77456d858557a7a11389c9145fa311b4c24ef32bcb4. 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/0nwj66RE53z43wd5zRDTav.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/0nwj66RE53z43wd5zRDTav.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe090f1dfa606cda4132cfa192769b5dedc08d35a3a9e176015abdba7f654ab1. 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/5KixqSXHFB6D8trfSdKZZY.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/5KixqSXHFB6D8trfSdKZZY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42387ef732c3965fb40343075d2c90b67b7fd2ec2d268f31350e010e5d85b982. 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/29jg2lB106xHzqyZYlk4fC.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/29jg2lB106xHzqyZYlk4fC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe090f1dfa606cda4132cfa192769b5dedc08d35a3a9e176015abdba7f654ab1. 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/3myVbSJAX9aPRLKXRJi3mJ.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/3myVbSJAX9aPRLKXRJi3mJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52097116c84f2d19366668701f22f6d53ae663bf099014b89a9bbb055a5bf18. 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/5G6Pem4DiyZ02dxkoK2dJN.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/5G6Pem4DiyZ02dxkoK2dJN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe090f1dfa606cda4132cfa192769b5dedc08d35a3a9e176015abdba7f654ab1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/72thpvEsgNhn6ObVnAQiQQ.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/72thpvEsgNhn6ObVnAQiQQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9861e3ed8801744956b55eb59ff5640a2342c604d384bd22b53e901cd80f2033. 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/3VvXhpHBcFIDCLsF3vxl9E.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/3VvXhpHBcFIDCLsF3vxl9E.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676f9026c94eb079f52252f15111dd61ca66c5eb887348a6c736872bf18dafe2. 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/7nVxXuOMZx11JzLUhOxHCR.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/7nVxXuOMZx11JzLUhOxHCR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc729b7f9866c9f484919ad25d35ad686b50cdf07949660575f2bb71d96f71bfb. 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/07DzXYNwTe5nHtYCQksnCC.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/07DzXYNwTe5nHtYCQksnCC.
{"copyright_id":"0x4cce06a642addc336cbcfeebff50b1e471aa245b7aad72a95558310b85512a5e","isrc":"US23S9433303","name":"Luv 4 Dem Gangsta'z","registered_at":"2026-06-04T05:03:19Z","spotify_id":"0pykk0NCZMHJ7rMUzTGoqb","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cce06a642addc336cbcfeebff50b1e471aa245b7aad72a95558310b85512a5e. 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/0pykk0NCZMHJ7rMUzTGoqb.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/0pykk0NCZMHJ7rMUzTGoqb.
{"copyright_id":"0x3b11c093c600a15827dbe0c692a4f1bbe00c176f7fe81d102dcae660d7c847a4","isrc":"USPO10000852","name":"2 Hard Mutha's","registered_at":"2026-06-09T19:55:34Z","spotify_id":"6AtcDZuuOaJC3gAGGilGVi","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b11c093c600a15827dbe0c692a4f1bbe00c176f7fe81d102dcae660d7c847a4. 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/6AtcDZuuOaJC3gAGGilGVi.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/6AtcDZuuOaJC3gAGGilGVi.