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 0x068655079160c485f0576d2e154ff6369bf254fba3524cb4d74d365aebc41a91. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3c9602a3-5c3b-420f-9a8b-638e261650e4.json and https://artists.proofprofile.net/proofs/artist/3c9602a3-5c3b-420f-9a8b-638e261650e4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sefiras Haomer (Acapella) [feat. Yehuda Solomon]
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 0x719a787d1126e8b7a3deed94178ce79d86e848ffbd5b0f38a3ee15959d508373. 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/4l6DcemiwP79GD7QOMRkyh.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/4l6DcemiwP79GD7QOMRkyh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ee6e705c7668fc9e990b0d12dc95d6675fb34a476fe3bf8639791387eebd89. 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/4WG95V4LJtyoNK8njPHEeC.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/4WG95V4LJtyoNK8njPHEeC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60c021717b0538b4da53cc74ba72b0b1273ca321b497918ba27ebfd7aca7058. 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/5wp6nVdHI0vuaD291fyT21.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/5wp6nVdHI0vuaD291fyT21.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdebdeb3e07d5078386d02850ca0f3e6d07a01a4b953e9a3ae6aed4692516b09. 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/3FLRwi9onjkqlIK67hfm0H.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/3FLRwi9onjkqlIK67hfm0H.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf964225e64055f625f202f4fc29eece680cd7a64ce51a7ad2c38643b66c9934. 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/03VgfUjRlGQd2GUEghXYUv.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/03VgfUjRlGQd2GUEghXYUv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f2474eda52a20a8a92e2c008783d5bbe97969ebea4e2806624663033c0b432. 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/41f01fGRyGX8ih5jIvDrkl.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/41f01fGRyGX8ih5jIvDrkl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34c497407fe2d23b15954d0d30cefa393bf79f8e771d7b730c9711b22b623c9. 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/1XF9rMSLRigdOiV25wAFp6.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/1XF9rMSLRigdOiV25wAFp6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc031b1ecfbfc189c0e773ee7cb393c49a3b818557563ffaf65cce5218b85e2c5. 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/0uVk94UaFPlNloeB2Lv6tg.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/0uVk94UaFPlNloeB2Lv6tg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0b01b303fa99dd703f971eaa4bfd20a24660710fc11add45759873ea6c121b. 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/5lSuALrsZ6StkXRhq2yQkH.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/5lSuALrsZ6StkXRhq2yQkH.
{"copyright_id":"0x059b043a8fb5b1b2ef0ca7213395cd7e6dbe2798dd4f1ebf85bc688d42ae04c6","isrc":"QZDA82352842","name":"Mili Deshtuta - Crazy Stuff","registered_at":"2026-06-07T22:01:40Z","spotify_id":"4j1IQROqeL4Qyx2WhG13sz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059b043a8fb5b1b2ef0ca7213395cd7e6dbe2798dd4f1ebf85bc688d42ae04c6. 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/4j1IQROqeL4Qyx2WhG13sz.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/4j1IQROqeL4Qyx2WhG13sz.
{"copyright_id":"0x562d7f1ab8e7be33385a75f51be00b5f56e39058921ef55dbca5b9fe7e9c65fe","isrc":"QZDA82352843","name":"Todah Lrabeinu","registered_at":"2026-06-18T21:19:32Z","spotify_id":"5Dfke33NcseJGkhkzKSoLs","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562d7f1ab8e7be33385a75f51be00b5f56e39058921ef55dbca5b9fe7e9c65fe. 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/5Dfke33NcseJGkhkzKSoLs.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/5Dfke33NcseJGkhkzKSoLs.
{"copyright_id":"0x6a28b3ef6267766d3f0fd3ec51e7e95246c4ece7835f6bda013d38fd4db2ebee","isrc":"QZDA82352844","name":"Madly In Love","registered_at":"2026-06-18T21:19:26Z","spotify_id":"2WgJVk1CASOSTvbuh7Wm3R","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a28b3ef6267766d3f0fd3ec51e7e95246c4ece7835f6bda013d38fd4db2ebee. 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/2WgJVk1CASOSTvbuh7Wm3R.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/2WgJVk1CASOSTvbuh7Wm3R.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090925860deec73b74ebbf9484ddc30ac683f5284b577250f136fa1ee119c4d8. 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/0buSI7UgiPsyBbs5uutfHE.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/0buSI7UgiPsyBbs5uutfHE.
{"copyright_id":"0x76932f02cf9b26de87eab783fc080ef52b905ea4d348d9f0814c8ba3eb99910a","isrc":"QZES92290330","name":"Chusid Breslov","registered_at":"2026-06-06T19:16:19Z","spotify_id":"44VHw0RhEUoNQuocEzDnAa","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76932f02cf9b26de87eab783fc080ef52b905ea4d348d9f0814c8ba3eb99910a. 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/44VHw0RhEUoNQuocEzDnAa.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/44VHw0RhEUoNQuocEzDnAa.
{"copyright_id":"0xecf8aaf112fdb5c2af09c7f5f94437724b52dedea501ba4e243fce1389a19e5b","isrc":"QZDA82352846","name":"Geshmak To Be A Yid - Remix","registered_at":"2026-06-05T18:12:40Z","spotify_id":"1nqyZrx6raQTp1tbJ21u36","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf8aaf112fdb5c2af09c7f5f94437724b52dedea501ba4e243fce1389a19e5b. 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/1nqyZrx6raQTp1tbJ21u36.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/1nqyZrx6raQTp1tbJ21u36.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a4c622656554aa8201ad74c549b1990f346d889ff1f7d7730778a49fcfbbbf. 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/1wpW76vjUlYiZEekmfCcdP.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/1wpW76vjUlYiZEekmfCcdP.