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 0x1bfdb5c5a80fd02d9f33fad67114c4fc69d0dafd4e76311922c1dd2ba9c79c32. 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/ec3da1b5-f153-4a69-8263-bfce35b2faf3.json and https://artists.proofprofile.net/proofs/artist/ec3da1b5-f153-4a69-8263-bfce35b2faf3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Surat Al Fatihah Dan Surat Ibrohim: 19-27
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 0x306387ccd6661b3de665c0c8b05816e4d7ab3b99d4eca459d17c5baf5a94a8e3. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/SGB502263354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a619974404dbcc3e91a9b5afe84293dd72272a7f0f4e31b0f399d9701105bd. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/SGB502352512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cce920cd39f376310768252a8d9882744218e88066c7f20e38be2a466db2f13. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/SGB502352510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb33ee75db361a31b0debcf9b7c805d7b8e4c8f265d262241689c1fb5604c769. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SGB502352511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86a3d9b98ef4c9c724410c7fb806cc81ea13339f7618b868192d211f211ec82. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/SGB502352505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ad2037256d6af4f40b878967fc1743353aca26ebfabc991f87e11e7ec1e2b8. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SGB502352506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546202633e5ba8b9db09a8f861e9f51000065ff7ff52ed3958b27f1a78946150. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SGB502352508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x074293cf19183e4594950e8c57784d9ab0d5f058a0c1ae31d88d5000adb6545d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/SGB502352509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703eefa3b6a4d7c92a645bee125351bbfaedcf4416ce2791ead6d507dfee040b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:49:04Z), 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/SGB502352513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab0dbfe87f14d51ea6318d5b28e977ab3ae06b076501963456fe4decc336706. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SGB502352514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09777a6c92a0528643fec61f6f55436e55d5c97cf21b8da3166c0391f271f43. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SGB502352507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2abd36c5fa7a16f2e4caaa3fe80dcafcfd1cf687f03f7fdf74bf411b38bd4d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SGW502357275.