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 0x4b39a713f63e5b588e32e42678e5c4ebf3d5c91d945760efab690fac7e5f65b6. 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/fc5c3c4c-ad65-4618-888d-d288f0d45cbb.json and https://artists.proofprofile.net/proofs/artist/fc5c3c4c-ad65-4618-888d-d288f0d45cbb.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 0x2b812e6ee7798f3ff71a8f7b937669dc900b3c2917445ba7e60077def4fd4b57. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZRP42206163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c5bdc469ef0e8a5ab79c822328ef35dccf924ff0c5473d3602f07c0c8b297a. 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/QZRP42207915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2393b6c352068408924062d788ab14e76784999a63f4d8aeeaa7c31506e9f3. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZFYZ2045706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a9014d71db665ac41cac34525fe4e6782b775b493a3d0e0fc8bde0a270cce2. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZFZ72133451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77eb35349a15d638d809155d48513c7e95e45d7c82e14f4339dd67fbafa7767b. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:28:47Z), 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/QZFZ72133452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812943f5d9ef2aff82073e5927d7def16238aebb7a2132231bdc8606722b352d. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:55:58Z), 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/QZFZ72133453.
i love you, but i know i can’t change you
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4058ec74dc1a415748ff85a4a05385d6f4114af014b026f561c7c5f0c81097c. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:39:33Z), 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/QZS672182632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04afa37634bbfd09c7d1c5eedbb897a9894559996a898f94add23b3b18845978. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:40:19Z), 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/QZS642145601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8df9145bee7a2304435cf0f3264e09839cdb4c8df0b9d4775a7521837ce438f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZDA52244226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e1738656530c965ca2668a81e3446e2c6e912323fe3c2334e18a039ad43427. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:57:24Z), 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/QZHN32232468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ec24979062190bcbc77098670d8199fe950ec087734c2cb7043b941f82e69c. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/QZNWW2277570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725af3bacbfee340447f4ade625279e859f44e9f1cf837985936b45ff59ead85. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAIL2463898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8451a93627b634d9daf6374ff8c8640351540bc822edf2af6b929c9327fc8f47. 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/TCAIL2463912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa4d883c620a6e0d944d85dfa06e7832e1b138b0af8c805beccb81061f01042. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:03:38Z), 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/TCAIL2463917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2da46ff2dbb4507f8d8e5e8fed010fc332d5dd9888d7b63896db956f5acf3b. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/TCAIL2463925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0ac2580e135d63c3a12b99e194aa6e7cafc9c71b794ca3287255b41bada6d9. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAIL2463941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67e710d314895b83ffe56ee3ca1a27588d447121e70c9ab02a2b834e7e9eb23. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/TCAIL2464031.