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 0x2c605d0167c2438077d696202d8934eee7d37cfe2346cf8061408442c4cbfb27. 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/2eaf0112-871b-488f-8c70-6d2b515a0090.json and https://artists.proofprofile.net/proofs/artist/2eaf0112-871b-488f-8c70-6d2b515a0090.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 0x4d2c88ea4208de40a850be00cd452adb8e86ea3e511aafd0170cb1be7223fc1a. 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/QZ9JZ1720192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf8d417947a2811be1e9b99815209c523ee1cdebc2dcc872325312efcfa4cd2. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GBLFP2340346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8c4fea33c3668c6c3144156c3b5a0b1735b720a33842431703ad90f2786acb. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZPLR2311288.
Darkest Place (Sped up Version + Slowed Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46e0caa1fc437f797692a7495ff1ff05f7118e833168f4a9c79121805fe6523. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZTAZ2346844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9560871281fd243600d9bc50348630247285e8d70bca94f12a3fa55775d38c. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:42:29Z), 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/QZWFH2382677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce393463fd4c558c4c8e1de1a3ad58a43d45d2bedeacb3b310a3b19e7aa93b00. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:25:45Z), 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/QZES82441355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957aaf3bf2214462c565b8c18c95a4708be8285dd3a47ae67a428a7c55d3e22b. 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/QZK6P2411491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4780a39839dabe394d5990401cb251f070d724ed595b503ad3dd0abd554020. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZNWQ2496907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0413751c17b551455def7369ceb33597d9e196cf7e6b4245a260adbbdcd13bc5. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QZTB32455521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f3f7c155c7e01ea430255fc920d18c872a49a9f7af6e6763cbf8101e98fa07. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZWFG2421407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8458f11549b2edc8e4ded81071b9ae7d60dd57ee42afe5c0bf0ed29805df62ff. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:59:46Z), 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/QZWFQ2465600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c2b4821762b68eee55df9b83561127ed46085feda1d968e2d3b3438e44fb09. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZWFV2479088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e68d3d35f465ea3dffa12cc54d586f79894b96dde36060cacb2192d7cab63f. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZWFV2479089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c028ce43d24723da5165e54dc452268df79c29d10b2f81c354985c78705f44. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZZ7R2417993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6665a6be101b8a5cf6e2296ea97b2c0cec5bbf203bc2b68fa9070b73d483474. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QZZEC2479251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a46ac7a48d7263be8d9db375fad67146a5f45c3345f7b407e05f26e51114bb4. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZZEC2479259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a82732b48aeac247997de51cdc0f693111441d455eca06e543ad7e3b3410893. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBRKQ2566369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0642d9e8a0981fcd68d7755e48755a96c7cff1a6095df3042bc956f81a64a35. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/GBRKQ2566451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37280589330781f6a4563e46dc6493550e44e5145fdaa15291681cf107c49401. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GBWUL2565249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184362252705c5c7a8114b9386e3c912111f6f12f6e42b232d6159561760456e. 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/GBWUL2565263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e998851acd2dd488177a0009bec9fa1dc7363407f71db8ffb634ab7faaaf62. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/GBWUL2597427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2c78891344c32daff16baa4e1a61b78b5684e5a184be4425fa161486694a62. 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/QZWV32598381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44356be15ffec7e42685053a71483ec7a0b6db5dca83183187ea125c1d49abe1. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZWV32598388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c48fa4c0bec7ee9c7e7d34a42ff98e4ac05be1023270fb4f980d9f33c866b8f. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:16:14Z), 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/QZZ8B2504030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65551c91019597636524f077ca73eaef99163df18adcfa6ec03b8a37b8c6d41. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:56:23Z), 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/QZZ8B2504043.