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 0x3cd071e0832c4f3b8f39ce3b3cb3b713f6504c6d4b516e29cb528e27cb52c25d. 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/0faceff7-1c60-455f-966e-7a7615ffa637.json and https://artists.proofprofile.net/proofs/artist/0faceff7-1c60-455f-966e-7a7615ffa637.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 0xc6b613353214bbbb9a7624cca61380c849e48dfab66717ff109267fcd9270323. 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/2OepvbROcnin8kxwS5opUk.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/2OepvbROcnin8kxwS5opUk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70711896445bd981892cdc871fb8c4de27058c704f8ee703449359541756f7c5. 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/05ToyM4GZYrxFKaGuPi9u2.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/05ToyM4GZYrxFKaGuPi9u2.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9434154e7a37f5fa08a3602f36d8762bd33804e205937694a93ffefaa4523e8. 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/2ygClavHRJeMCBqAI03rIT.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/2ygClavHRJeMCBqAI03rIT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ec317fb4a4926f2af822b66e1025c1fb64812dd450333082226b0bf003c27c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5BkBID0BuiLmN71yPHTXCg.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/5BkBID0BuiLmN71yPHTXCg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18980ae7fd009201cc3a5a9a2676a868ab576808031a3ce057cbdb8d01c3293e. 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/1lAccakbSu6tultgxpYnFZ.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/1lAccakbSu6tultgxpYnFZ.
{"copyright_id":"0xebde86485eb948d4a47f7b62036f06f6d363e5617b29151c9cf5f96a6fc87962","isrc":"DKE1A0400602","name":"Love Will Keep You Warm","registered_at":"2026-06-05T14:17:11Z","spotify_id":"6UFUfDQVCfSU60cXHRouI1","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebde86485eb948d4a47f7b62036f06f6d363e5617b29151c9cf5f96a6fc87962. 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/6UFUfDQVCfSU60cXHRouI1.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/6UFUfDQVCfSU60cXHRouI1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09444bcfa1e0d4a92bb94b16d5701761942e3d58b8573b88d126442f903a8cf. 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/2Ir8n6l3aNKPGiI6Hn980G.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/2Ir8n6l3aNKPGiI6Hn980G.
{"copyright_id":"0xc9499afb0f1fe3de4648c3d4aa2b3c340ede3f6ce0ff0c1747be0d34276f67dd","isrc":"DKE1A0400604","name":"What Is Love?","registered_at":"2026-06-08T06:46:53Z","spotify_id":"3khQh7CDo9gMwhAJFU0dTb","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9499afb0f1fe3de4648c3d4aa2b3c340ede3f6ce0ff0c1747be0d34276f67dd. 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/3khQh7CDo9gMwhAJFU0dTb.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/3khQh7CDo9gMwhAJFU0dTb.
{"copyright_id":"0x64dd3cf3ae32e746fc8ec019cbd341772a517ab550d71d7b11b2af3c26f90d4c","isrc":"DKE1A0400605","name":"What You get ..Is What You See","registered_at":"2026-06-20T16:13:36Z","spotify_id":"5ZkE4W9G4nogIF0V0Hsl4w","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64dd3cf3ae32e746fc8ec019cbd341772a517ab550d71d7b11b2af3c26f90d4c. 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/5ZkE4W9G4nogIF0V0Hsl4w.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/5ZkE4W9G4nogIF0V0Hsl4w.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63cbbb6a273e17276f8da7dbe6ccb151b66551d55216531cfe193520d750639a. 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/5mTX2GC48azBx8ROQ5YPgL.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/5mTX2GC48azBx8ROQ5YPgL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e621d961865a716865d3f4c88f5c9dad9e97788246c95146f489dcbb2d0fb8c. 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/7vVqod86M2hrXeHuFpBTT0.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/7vVqod86M2hrXeHuFpBTT0.
{"copyright_id":"0xbd44754e2100d4efb5d56c5acc3e864c054dad0bab0ec57094919bc2da962be2","isrc":"DKE1A0400609","name":"In Your Life","registered_at":"2026-06-21T16:10:55Z","spotify_id":"0Q4XhTDQm9yJL7ASsPFdoc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd44754e2100d4efb5d56c5acc3e864c054dad0bab0ec57094919bc2da962be2. 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/0Q4XhTDQm9yJL7ASsPFdoc.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/0Q4XhTDQm9yJL7ASsPFdoc.
{"copyright_id":"0x3b0b0b92f96c830605a44c07f20d76c807c6e39691ca2d63e1ba054e07bccefe","isrc":"DKE1A0400610","name":"Lord Knows, I Can Be Strong","registered_at":"2026-06-26T04:24:03Z","spotify_id":"2qJDimNq6jCbCKJYbLJFnm","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0b0b92f96c830605a44c07f20d76c807c6e39691ca2d63e1ba054e07bccefe. 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/2qJDimNq6jCbCKJYbLJFnm.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/2qJDimNq6jCbCKJYbLJFnm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c97560827813e34735176094a84405bd220f66947b142667c0de3ecc7f32f2. 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/3YxQn9CuivTVEaU6cyNbC6.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/3YxQn9CuivTVEaU6cyNbC6.
{"copyright_id":"0xb9498acf1a5d10803cb6f197f37845dcf630545f71a5c1f4978a35d426b79070","isrc":"DKE1A0000101","name":"Flowers In The Wintertime","registered_at":"2026-06-22T11:59:38Z","spotify_id":"6iqFEZskzpojf3EEPgvEwS","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9498acf1a5d10803cb6f197f37845dcf630545f71a5c1f4978a35d426b79070. 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/6iqFEZskzpojf3EEPgvEwS.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/6iqFEZskzpojf3EEPgvEwS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5ca51db2f97107e842c1a7be0f660eed49c1a85e0723ce82e45804f7f99b8c. 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/5Ariz4nO8kwgc1uqVx0iH2.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/5Ariz4nO8kwgc1uqVx0iH2.
{"copyright_id":"0xbce0c34e94ec9032d5004b964aeeef0b518365fc758fc1e362b5348c2fb9f2e2","isrc":"DKE1A0000104","name":"Stay Tonight","registered_at":"2026-06-09T11:54:17Z","spotify_id":"0YJHKw9GsFeSuwpYn4rQ7j","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce0c34e94ec9032d5004b964aeeef0b518365fc758fc1e362b5348c2fb9f2e2. 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/0YJHKw9GsFeSuwpYn4rQ7j.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/0YJHKw9GsFeSuwpYn4rQ7j.
{"copyright_id":"0x3e6fc5dab4c54336bba0e01a59c81c34dcc384926a4293a564d98216c2ff2cfe","isrc":"DKE1A0000106","name":"Tomorrow Never Dies","registered_at":"2026-06-07T22:52:10Z","spotify_id":"1mLGi7mL0Vemj0XSklaWW0","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6fc5dab4c54336bba0e01a59c81c34dcc384926a4293a564d98216c2ff2cfe. 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/1mLGi7mL0Vemj0XSklaWW0.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/1mLGi7mL0Vemj0XSklaWW0.
Matters of the Heart (Fra Fuld af Kærlighed)
{"copyright_id":"0x844345b91612e431b82afeec153fbf5f938be063a70de9b01c65274dcb3d62b8","isrc":"DK2DY2300013","name":"Love Will Keep You Warm - 2023 Version","registered_at":"2026-06-19T19:11:25Z","spotify_id":"1J3WTjLGEyIUuYJzdUkVK5","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844345b91612e431b82afeec153fbf5f938be063a70de9b01c65274dcb3d62b8. 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/1J3WTjLGEyIUuYJzdUkVK5.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/1J3WTjLGEyIUuYJzdUkVK5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ec317fb4a4926f2af822b66e1025c1fb64812dd450333082226b0bf003c27c. 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/1AMuBqp4dNe0UjlSFwt4WJ.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/1AMuBqp4dNe0UjlSFwt4WJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70711896445bd981892cdc871fb8c4de27058c704f8ee703449359541756f7c5. 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/4qipumGfacuxUTZdGgXR90.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/4qipumGfacuxUTZdGgXR90.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b613353214bbbb9a7624cca61380c849e48dfab66717ff109267fcd9270323. 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/6nBU85yajq0iX7GkbfTaVZ.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/6nBU85yajq0iX7GkbfTaVZ.
På Danske Læber (Leonard Cohen-Sange I Danske Fortolkninger)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7601b7f364ed67709cd00d70e1519a270a1f4652bd77343a05414b5c971e5afa. 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/7rfAaiDvEi8oa1JHbrUuJr.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/7rfAaiDvEi8oa1JHbrUuJr.