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 0xd97900cf708b86722a6411c2c2bb17f288a9d6b6ff37c7e31f9ef49b12bac184. 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/cae3d951-865d-452a-9b1e-a96c92d4616f.json and https://artists.proofprofile.net/proofs/artist/cae3d951-865d-452a-9b1e-a96c92d4616f.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 0xc80e57279156457c8f93eda344a5c5c18aeac27f643be6e4261ace30270508ac. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:05:15Z), 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/QZNWY2371641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da06b600b4ab42c98d0417de7acf57c50dc1bd43edddc87e53bb18bd5fd6534. 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/QZK6G2386719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7e28fc5c855dfad9b78619155c3c2b3ce1d9540fe3efae1972f9f8d261d022. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/QZTB62328143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2411eef560d0c6d950a3c559c477ab932d47cb5cb66d2921409d6f22254cc3. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/QZWFK2325222.
Puras con prezizion en vivo vol1 (En vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9712454d410d6d4359a22c44b0370dc7ac63007ee19e65e75787dcd86fbf8d2. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZNWQ2451186.
Puras con prezizion en vivo, Vol. 2 (En vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d510ecd58852d709454de5595e52dc3ec0523fd65db517b7cdda4ae9b62c099. 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/QZTB32453144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64fc294bd63f6d6f38fffaca2cbc486e5a442c36c7ff5720a6af31930337241b. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:24:08Z), 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/QZTB32453145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0433e9a61c75ad6a547a7cf163916220da8a6382bdad6862799044043cb2c52. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZTB32453146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f1ddfc9051cdbf0d5b821cb0843fe34b78171bd579c9cae0dc0e0d14bfc220. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:07:04Z), 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/QZTB32453148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cbfbc2f6f6fd2f311ded482edfee14f60d3030d20206b9ca906197efcf0b5b7. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:23:36Z), 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/QZTB32453151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb939437b727d4c850993270efd1881dbe656f1828fee35cef08c17c48fffb98. 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/QZFYY2509520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4688402b2fa3f590bc906cf4f824460b73b9eabb4b974e397226803718f9fe. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZHNB2554805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a4b2f92dcb10853d516cc4503378ac5c1805790f3779fda1d4b995482069a9. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:35:53Z), 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/QZTB92594500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20842b8dcc8199b1822e15a30439e1d471813cc62d4f8d396bff1e15a5effed1. 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/QZWFU2563438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x951fe7cb52e15870a803e1cd921617872998cc60550cc0f448c074c37c9c5bab. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:14:48Z), 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/QZWFU2563439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02b2351e1718a807b6dfd80048fc09e9acb9788cffbcc1504a2847e3b88854b. 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/QZWFU2563441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b257fbd64650ae3e50d316dca6ece23b99e724906e074f277e93530275401f. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZWFU2563442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c104a20c70d3c1ea6c6af7d5889d2328fd879edf701e963534ed547a748721. 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/QT6ET2564321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc1c92ddd7af654a0b666d233679dd7aebde8ed0a466486ab8c72932c41c9c0. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QT6ET2564322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc802ef7e5c76a9f4a987f5f7b55e757356c016eb5a466c6816a1aa921cee921. 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/QT6ET2564323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126606965d187c8b7cc3165978d61b91e29a4404b41b247f48ef9503497af3b7. 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/QT6ET2564324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f9ed7a75ec7352063166c079bf160bd509a1e7402e9d9c1e490bece117a8f9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QT6ET2564325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9400684a2a619f0462692363b5d82550b7e51abe72da10ec485ae2617cda78d. 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/QT6ET2564326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8743810a4677cc3efaa7228808c349ce0d4514af4aff45dc49498938622633bf. 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/QT6ET2564327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7fdeefe14ea299104e6897b794733f7d51d106ae52ba95c1059f80767593c65. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:51:17Z), 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/QT6ET2564328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0110b0d421ba6bc64fa9decd4ea86b818bba1b40888dda73b280bc6edce8feed. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:54:58Z), 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/QT6ET2564330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a8e987ccfcfec8c84f378c5369758443e507c7bdd072ea734ac8ebd29198e8. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QT6ET2564331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e80c6ff5450952e2a9b332a37225d66301e77e7ba1ad0eebd788ca453b97c53. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QT6ET2564332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c766c885cfbe43c0977781b5af937df1cca85d2c5cc639b426b59e0cd97cb5. 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/QZMZ92538042.