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 0xf9cbd1893d63ef953cbbd57fc63c40a603a372886360c06ad68616672125c329. 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/4973e1df-d5be-43e6-8192-b69f4ef81c53.json and https://artists.proofprofile.net/proofs/artist/4973e1df-d5be-43e6-8192-b69f4ef81c53.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 0x1af2c0182a6f713463eed8dce6e6defec786acdfaaf469888ea46ba1886ae4dc. 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/QZGLM2064300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4fdf96463c8d23af6e7ba4059f31a6ac265be017a053cd49baf6e4f624813f. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QZGLM2064301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f790e2d166a7f5885c779f50f8bd7106e8944fb28248d2220d5c9f59875cc6. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZGLM2064303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7fc07a1ab6585487b61f63e9d26018f73fd47858cc9b3fbbbe0ee8243cb764f. 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/QZGLM2064305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad73f109ec502cf75898c185331b81e4c2180d49cbb0553e018be2da9cb76cc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNJX2215868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a5275e54b66d0e0ba08cfdfb6fd75481c31af89cb66ef41fb439b51c037ef9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHZ62274957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149debcb27d286a1ea069e5dda5d90419d0a9bbbf5ff7fc52021e1d35349a12a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNJX2215871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682b0051b38b960d79052bafe9e629becb9b7258b0b078e075d9fd3b3533f6a6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNJX2215872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20d64c6189e8798d01ad652dfb75c9f9200b788f9436b0e251a7336b1b5a764. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHZ52224431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51771942259640d1a3b7a87ece51f5d4c1ddf9d0dba17191aebb3c3427cec7c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNJX2215873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ebfcc48777245906a62462c577c7b23eedfc48bddfc49377c89af5875eb9df. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNJX2215874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54683721c3ab4febc0e120f67b2cb400377cce09bedf75dae58f72a28d855569. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNJV2202518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c72b0d380434008a8bb64e5020f4da73b400e9422574b3fc1986fce02212459. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNJX2215869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7527507e6bc6f8135febafc5dfd5bcd032285faa929837db711cefc4202d6b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNJX2215870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a66a44261204f8472b5f5dee580f0fd949ce4a9435afb40dbb10109a28ad3cd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNJX2215875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285d30475fdb68889443b8d2a34bd2ad6ee1981c142464c5e0e248c4b03ed9de. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNJX2215876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08939b83ac52a4e49286109ceea5c2dfc9b2370c560d920881f5a7258712e56e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZNJX2215877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4146b43465cf6c1ae388bd759531f314f09f206ee4ab5b11eda9f1dd2c1661b9. 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/QZGLS2537249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda78a74f1d5de79027ba1ef8156c9d09db9e307e61519ac8f616b1f423c9d4f. 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/QZGLS2537133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aff938c9a51d1092d80f1dcb8adfcf43892a357f715e9ba1f25caf9a9f20b75. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:20:24Z), 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/QZGLS2537130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cbff9e77cf586c6fa0a1b71f78acb7748aac168843d8ee2d23b4f648207a47d. 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/QZGLS2537125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa8460ac16dd9ec5a35fecac542f4151fbfed0c681c874f0f34d16cbf44e7f6. 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/QZGLS2537254.