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 0x9937b95ce4fb115c7ccc91fd24fc260b5ae6e0dac3b81b3a7597855efe358161. 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/9fab56ca-5b2f-48aa-8690-40d94ea14523.json and https://artists.proofprofile.net/proofs/artist/9fab56ca-5b2f-48aa-8690-40d94ea14523.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 0xb6a6949dad1210836f459e4219f738a0c83174bbab2b5ea53d24d6c073ff7df5. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZ93L2122926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9baa997bee613089c77c4012bb3bd677e02e238da420a136caa6fc213918495c. 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/QZ93L2130686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc22c58da60dff8557e95c4293ff32496590080e00ccbd4b89d5a0274968a7ba. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZ93L2130687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19648ec0dd78565a048599c5ac7c64da287a39ae3bc6a19ade8bc5f07f696cc. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:40:33Z), 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/QZ93L2136571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19648ec0dd78565a048599c5ac7c64da287a39ae3bc6a19ade8bc5f07f696cc. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZ93L2136571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bebfe983e2c5d6572326d60a0f9415b53c7d4028f9385085fb6174f7505796. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USLZJ2298183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79ea7b30b128221969d0d93c4ccad4956108c9bb6a3f325e7c6d16d8167a20b. 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/QZTRX2203583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd5b9058704e9b5ab3aecc719e96a8c49e0621b140099d4e059455a4567337e. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T04:59:00Z), 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/GBWUL2203801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79ea7b30b128221969d0d93c4ccad4956108c9bb6a3f325e7c6d16d8167a20b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTRX2203583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5723129b62b64596a777e7fc9d465e63dda1d7f515ddae89b525f80951e7834. 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/QZWDE2243454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5723129b62b64596a777e7fc9d465e63dda1d7f515ddae89b525f80951e7834. 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/QZWDE2243454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5723129b62b64596a777e7fc9d465e63dda1d7f515ddae89b525f80951e7834. 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/QZWDE2243454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2acfab063c7f7b5d152d4ad003463c480e630258931dddb6dd9ea8fde1ab7e52. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZ5FN2351388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ec36460289e37e725fc03b60231681cd166aaf5a27601f08127f42b271498b. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZTRX2320657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eeb07890ad43bd2460ea853635b1d67d0a4ff9786094e9c5e557e82751cec63. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T19:07:22Z), 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/QZTRX2371607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68639ef9f339c150b01b3182c5cb5a928b8141b1c32f12e570001b907a33929a. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZWV32304225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c4c54080d0a2f82f3c523f4aac7a33122ff28fc92f13b36bc3999787a0985c. 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/QZZ8B2370928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81993eb70df0b2445f93667ab23dec6bc170f04d3de2e0ee73fdf165f0a7b6bb. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:47:10Z), 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/QZWDD2382830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3e0ac9bec72e6b7b1981c48e48461eda8c6f544310abed56c6be727f8893a4. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/GBWUL2395487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81993eb70df0b2445f93667ab23dec6bc170f04d3de2e0ee73fdf165f0a7b6bb. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZWDD2382830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ec36460289e37e725fc03b60231681cd166aaf5a27601f08127f42b271498b. 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/QZTRX2320657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4aa049ba7583d736191f5a9e23f0124d0f62403602e574e4075e976ab3e141. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:29:54Z), 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/QZTRX2371603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd3ff26b2772fcd57d2f211b12833d66790326502396998fbc86274fc99d6a5. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:02:06Z), 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/QZZ8A2360205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3e0ac9bec72e6b7b1981c48e48461eda8c6f544310abed56c6be727f8893a4. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/GBWUL2395487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f322558ea594af85e170318ae69c6976171cb5acf1e6b5a148d7fa28c7680a. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QZWDD2382833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a8b12c6beea7d839f5c0d0f1eaa024d7168d4806b4f0566a2c925bcf034d09. 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/QZZEB2323917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32dbff83474e21b1834b1728160201cec780d4d09c151e6d9676852d267659b1. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZZEB2323918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a205eb6368412bdfbff86ebbcc425a963aaf7c59f9ead8fc4a39b74238de663. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T03:19:42Z), 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/USLZJ2441003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b59f552cae8f6c410ee5e325e15898fdc0416828da0ca77b6407c5b0a6cee4. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/GBWUL2408194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b59f552cae8f6c410ee5e325e15898fdc0416828da0ca77b6407c5b0a6cee4. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:21:10Z), 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/GBWUL2408194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803b266e102c850cb038ffd3ba5943e1d21a821d45b8ec0a5633b6cfad55e33b. 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/GBWUL2416189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x341a6c422c6fc63d8bd82cb3fbaf8dca4ac792ce13b1d5453b6740832612936c. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/QZTV32479039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac2a91bf121b38e5d18502a59b34d5c3e16d752fb41930500e3718f41d665fd. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/QZTV32479040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f67f1b6e0e1a07ae9cb268af4c2ae107ce9610af2d90c96f74cc5a7f6d7162. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:40:21Z), 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/QZWDD2436587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8f1173c8806214d162a046eeb7bf12b799330ba1e7746dc492723995f83712. 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/QZN882420074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59300927d6e31e979d2d309f6861bb00e23f03709656f9eb0be3a87be2b0491. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USCGJ2179794.