Sheila on 7 is an alternative rock band from Yogyakarta, Indonesia. They have changed their lineup several times since their formation on 6 May 1996. Their first lineup consisted of Akhdiyat Duta Modj
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0xcb151b17b27492b61267c9c9ce91744728669bf1f2f3a01b4db4dbd07a84958f. 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/8e58a116-6d35-4172-885e-c7c23b52030c.json and https://artists.proofprofile.net/proofs/artist/8e58a116-6d35-4172-885e-c7c23b52030c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0088cddf0edaa40ad54b3edee836579d5ddc90d627ac5e5b388aee3dda9bff35. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IDAC51999153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651da81fb6c79a4f652fb547311c52232458d91313ee3da71b2dc12fcb4a98ea. Chain 2 (Bitcoin): anchored in block 957616 (2026-07-11T21:52:36Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IDAC51999157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547d33ef23f20e945468960965cba2e52e62fec957c2af6132a1140c15fc13a9. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IDAC52000384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25dcb8e2b516f283de7677573e66b96d3e4550a42c26803d5deefafd5e188725. Chain 2 (Bitcoin): anchored in block 957611 (2026-07-11T21:33:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IDAC52004082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c3a80a48eedf4fbb46dbae9425c17e9672bc12d12e4e283c75bbb8d51826a6. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IDAC52004081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec873c255d466ab255f5ba2c13beea72bdc6f71d1fbb2263625101b18705c628. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:12:14Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IDAC52002061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469e95e77c90de16a03d578306f75dc78415db163f87eb4b790ee80dd0e6aa0d. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IDAC51999154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15dfeb0bb8c8fce01c72bdce320a269b960195a8dfdfb7c950fc8561fda23be. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IDAC52000386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a302459d1ac7388be148e442dfb573574cf0698d4a69afd05bf2887f2eaaf58. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IDAC52002051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904bc2b8435c4767ed5f8d5ba5eea7b28287a7da829c4e34e73e0a1f2c5d5ac5. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IDAC52003225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8af3f50152dfc1fe998e0e38e62039b25b7e7f485ab12ca77840727e4972772. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IDAC50800388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86dc47d62cbb51ad6450a5d24475f97c1d347813aae0794cf4b9764619f3cbaa. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IDAC52006161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed3d3601deaf7e75b747f898db48b6908979c88d7ae2f881587325db40e53a9. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IDAC50700135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6235abaa0861170d451028d8ab38830bcc78d49b72a76367bbdee29194d2b12f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IDAC52002058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcab8bc43df08bf240261158cf483d0457c313bb694ede8cb8145a0e6a093cb4. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:38:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IDAC52000387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe92415de03db02ce53d0943efd10919086b6ec031527ff9895045e41db41098. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IDAC51410024.