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 0xdd0e48f10acadb4c1e4b2a51bf849d69a96ff6256f121a11ed8c5447abd60abc. 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/d1847ac9-4134-457a-ae1a-8a2ab18adf27.json and https://artists.proofprofile.net/proofs/artist/d1847ac9-4134-457a-ae1a-8a2ab18adf27.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 0xd63deca9f9581471923370fbaf14f0ff42c6416378b0a73b49bc8cd8d8900098. 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/3FPVZ7IKz06SoA1EmHJRzG.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/3FPVZ7IKz06SoA1EmHJRzG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46664a6324230a1496a262d2cb84c5cb76232a3d99d27614ecb6837a864d230. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4M8zRwUl44jHt4xfc0JogO.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/4M8zRwUl44jHt4xfc0JogO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1efef9938ea975b8451fd16c12d2680ce1c923456442fbe1296bab0222a473. 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/0uMdvWEZL4mwMUVvKoP6Cx.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/0uMdvWEZL4mwMUVvKoP6Cx.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5a8d251473d0531f85d2053be2851b9fa02956c9fdc977494349b194d8b9c2. 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/5LYAGX5FL7BvwsrIMuMHf4.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/5LYAGX5FL7BvwsrIMuMHf4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce15019c54dd74f9a68d566b8bfaca99a4a8a8729f17a43a89c750068bd4b805. 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/4kbS725h7aykZzasQJTmYd.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/4kbS725h7aykZzasQJTmYd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b996e1da9c01d7cdf4dd1a3e459e0ef2d40d4e1626dcabd938540df0ef3d9f. 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/2RxWOvPKvK42DMpNya0nPG.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/2RxWOvPKvK42DMpNya0nPG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206d1cff07b5ff9ec3cf9bf993eaf2a1a06eca36710f35f57273f7d4ed56d27b. 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/3FgAqz6SowZiJLShBXiVln.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/3FgAqz6SowZiJLShBXiVln.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660843bd89c34f392c477e111c8ab85c87a005b40edfaa7a47be76f4e464e37a. 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/6Bnv0L4pByd8Ig8dA8V2ve.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/6Bnv0L4pByd8Ig8dA8V2ve.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6f02f827ed5562176dc82cf6f2fec25034ca7c9d00a3c0f2261fecbcd8a306. 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/1IVoBtVMa63GtvN16gXMfn.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/1IVoBtVMa63GtvN16gXMfn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9ebc27f6a4039c66543b897edfa02c229dd03cae2a13d4cac453e492c82058. 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/7pGJH077q6y5ym5uEz37VD.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/7pGJH077q6y5ym5uEz37VD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5857f3828f2a3be7021a603e2d46189bc7a7cddda3f4745888e80925235c7e54. 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/7eHOCUhVH7eCSZ1tBFyD49.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/7eHOCUhVH7eCSZ1tBFyD49.
{"copyright_id":"0x2d8bbb9a8d91eaef410011987f6b5b9929244c3ecf5494ad80dd70d804b0acc2","isrc":"USL4Q2431218","name":"Kung Sakali Man","registered_at":"2026-06-25T05:43:41Z","spotify_id":"5taoNHXvBA06BNhDUFNSeH","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8bbb9a8d91eaef410011987f6b5b9929244c3ecf5494ad80dd70d804b0acc2. 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/5taoNHXvBA06BNhDUFNSeH.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/5taoNHXvBA06BNhDUFNSeH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253e6fbd129692b29ba47e77a35d26377703db1eef2ec69fdc9a051c66166bb7. 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/6KPIrHXKjBwswwqV7mHl9H.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/6KPIrHXKjBwswwqV7mHl9H.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb81eb51b23d23ebac8f5c5fc7e19c1d9f435358dd6c0ceb6c6b2471fb2860ea. 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/4OYmzNiLXoXiqCaK044ZuX.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/4OYmzNiLXoXiqCaK044ZuX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e6f341722c7bcb5d31941892ec4d20945bdd722760220edb6b81e06423921d. 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/1lApZl9GpAa8KhstKT94RP.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/1lApZl9GpAa8KhstKT94RP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdefa5a68a290c83eb13f099a64372b81c27e84a5613029b53d0a66add8c95dc3. 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/78w1YWDvOt2YuhljTtBVfJ.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/78w1YWDvOt2YuhljTtBVfJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3668ae9170888625be5f7a60848227f29b691e69c4af97d777a9abeb119f29. 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/2vitrupqp6xBHhzy6aGP29.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/2vitrupqp6xBHhzy6aGP29.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1566e83e19d28ec16ad81e758d722ddb2f7cf0abebfe56732119f801d26a825. 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/7IlDOSdFnsjNClcdbTnQcX.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/7IlDOSdFnsjNClcdbTnQcX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2433fbc0dda8b987a97bdea08c6f47a91ba3885a3e8e55d0cee084247f2b7b7. 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/0Li9WbZlTWOnzWXTWOG8Fe.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/0Li9WbZlTWOnzWXTWOG8Fe.