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 0x2f48e874017fd583f21dfa06de5ad773e2a5603b72a9ee488ba65c90f845695a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9ae93131-4b78-493f-99e7-d0b908253992.json and https://artists.proofprofile.net/proofs/artist/9ae93131-4b78-493f-99e7-d0b908253992.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 0xa8975f7d6c6057311eeeb99d61210c62364c2f7e4c8eddd43da84c77dec92c0a. Chain 2 (Bitcoin): anchored in block 957596 (2026-07-11T18:43:56Z), 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/QZZ7S2415480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496897d49e19bf53f6af6061d31e1428a86e9be723edb39077ad8854bc4b681f. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:55:48Z), 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/QZZ7S2407726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5ae140e66f10b04ff360bf9dd1b600fc314608c806c3907e539555cbf86d02. Chain 2 (Bitcoin): anchored in block 957596 (2026-07-11T18:43:56Z), 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/QZZ7T2420111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5db7a9e227af0366b9a5614069f556c7983bcc6ee64a406c58222009fd7eee. 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/QZZ7T2420093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8830ecb7274a0927c7b4958379ae947afcb61bbbb7ffbb0a730f009034d47806. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:59:28Z), 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/QZZ7T2420092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3980315c6276540fcfa36a9288ec81443cdd5342935a4a7995cd00e3efb98b4a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZZ7T2488363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046bfcd6137ced5114aa3fd9fb0e83c763d67e01b8b698252ce5c8fc8860c863. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:04:02Z), 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/QZZ7T2488362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36358c604b82071d469a4b90dc6c7d9ca9399414029e827b5b0c656f74efeada. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:36:46Z), 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/QZZ7T2488360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ff8d6626aadcaf4d2c2c0cd733059de3df3dac2f80714116e893a9ece5a2f5. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QZZ7T2488358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31fa5b2b4bbc3f62b1e82b4d781bcbd31dea65e5e53d229773cd6fef19e7e9d2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZZ7T2486875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25df9bd9d4ca715bdaebcb1d47d0e38d4690e25400b51dc43da3432bb39867d2. 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/QZZ7T2488375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643a23c9a5a805ec4fd2d5ce11bac08798180b88475534f88e8bad2799a5b664. 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/QZZ7V2459148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe6dcbdbc2a7c180509520c1d8503acce1c29166067adfcdb99d77e72ee3f1b. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:44:32Z), 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/QT3EX2448867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2a1f2081831a91ed29cc421998aa5a72c57aeed0af2b369ba7e5f971ed4e27. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/QZES52570241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a00a38d5d6e95bc2a9a72aacce3981e6280032599e734952962bfb6287707a. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:55:34Z), 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/QZES72514210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815e80ea3c49178e94ca7e2dd2e389384d57bf5f73ffba845c25c48cdd37d825. 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/QZHN42588785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88a7604dc22f4396c22df9bd814cc5427c80aca1d36b4384073e2a114d41a6b. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZHN42590914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028962cb6d97a6aef941798ee9ee1fd9b8918e95d367d85c7b4080207b120f05. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/QZHN42594459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810e9ba4e38c1727927cdf4ace5ba9849acdb932b76704381831ec3dde69b7ef. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/QZHN42590937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33954b1b6a2371a79d4aae9cb044a47d4a7057990c85838b42e2544649e6e433. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:10:51Z), 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/QZHN42590930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dda4f9560edcb2a8a406b8f6939b135f799d2b6be8906849f2391821c6d40d3. 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/QZHN42590922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e72f8930188268a4255fed371991c3e031ce5c2fe91afbedfb0277192b4675e. 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/QZHN42590939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa942518cfcb0c4a543d534d68edf51539fb7a31da1ad188a37ef7472233ce2b5. 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/QZHN42590943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18b58e058e5f627a0125de86e85aff408643965ca8d4824af4eda27c5135799. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:56:33Z), 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/QZHN42590946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43073af9a9215b24d16b6bef57bb92468fa4cdd5e2e463fc031e0b8c8a99174. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZHN42595986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c4bfa74b28d80d5e4f65f6091a6d177c92e3dbcad01ea75e0a974feb2fa65b. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/QZHN42595999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92fc804a94bc204736dc6fbcb18ea4710455e4bd3bbcdbf023129765090cc885. 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/QZHN62521653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7974cb88fe432982c49a7715e5044216543eff9dc0eb328749ce14ecef69c5. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZHN62502152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9f00725ad77bde579715692dce58f93aa162952cc2082dfde2a702a490b929. 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/QZNWY2571065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e4b6b170b6e304e646d7085da1ed6e36ed18ea812454ff40327d4d570c2071. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZWFN2529975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac583c1511f55abee87e114fec3c5095babf417655c784365fe52b626b81383a. 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/QT3FA2579279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf94d0bc601889db0d17cdd610020cd8f12ff816b1c08f2600908b2da7955c3c. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:05:36Z), 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/QT3FA2582002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688603d8ee100992afc4bd5074b9b9e4fc479c615c5a381e15a6987557b9cca3. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QT3FH2585563.