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 0xe7bac7e035db81b7cc46e6ef41a802922a3cc57862df124265f8552eb162ee0c. Chain 2 (Bitcoin): anchored in block 953782 (2026-06-15T12:13:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d4cce133-75e4-44f0-8edb-99147d82bebd.json and https://artists.proofprofile.net/proofs/artist/d4cce133-75e4-44f0-8edb-99147d82bebd.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 0xed53024eb34d4bcc189ff7795149371a3a81051a9de4f8a4899b123062d79c2e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JMC711302145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e2bbcc987e0d52dedda2c61e071b9816c2679c91036167b255c68f969853ea. Chain 2 (Bitcoin): anchored in block 960339 (2026-07-31T03:13:37Z), 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/JMC711302132.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c88d2a3bddb27265718de7aab3c565c99b4cf5e2eba8bbb8214f02d06a5120f. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/JMC711302135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ddf19e2dd375ca3322834a31fd07f0bcd57422248bfee51f9c54771b404425d. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/JMC711302150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34155eb598f1f4be12ccf43ab253e13d108e8e230de9e030948d8cf9e075656e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US7VG2493765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f8deabc71e0e8eb26825c56d3a02f99232c4cb07e1837dae96afd5ce01bd91. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USA2P2331452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ae73bcaaefe27ec14bfec5f4647bdaff4889fa55a86071808ecde0fba41803. 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/JMI031500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19dbacdd0da12cd934c1f7a9dc648cc4dc145dea6ab17a24cd64b8c6a878d8a. 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/JMI031500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04451e52647e0f57accb0cc3c352e8c17e706fe15ef0cf1371dd62c40b812640. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JMI031500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0e59e518ab85b385c9bd0d970f56702b885a10da9d16eda46491b9a59224fa. 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/JMI031500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906b661491d53638bbad0ed877628236ee3c805128126bbb29bb407e38b1ae64. 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/JMI031500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2743bf4e107e2bc32f30642d0d5de1625a1bf53499c8d38c7daeabde45abe4. 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/JMI031500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f0c4a07b4ae303bd911d962dce0eccc8ba588cfd342a5ec7298d85da37731c. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/JMI031500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769c5f984ec418d960c8a09bf6955bb65f74c0b8dc59f40ae2bf5f1b6d3372d2. 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/JMI031500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d57fbee8b0f106c10899032af1cb3505dd1f9d32353b6ff8b5e6aa11b3cc1a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JMI031500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8766d697cef2bc0c9539f6bc7808ba570efd16940e671bd7bf2fce9391d481f6. 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/JMI031500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2fe09749c2ed2f0614ef3458feb3c9588be85d01c7b2fd4e56a78d829125e6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JMI031500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f6af49509863d04ca272872ea4a6773e37ee90948913e3d97506d3a8825602. 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/JMI031500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1688eb0ac20faa694731131cf2892d78d5c828d933d5e6feeb51e9bd809d74. 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/JMI031500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c5e31387731447e8fdfdfe2e2bae8f85eb9ca9005ebd49f7605c68856a172c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JMI031500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0012a5c5af7e734e3d92d02b513928308f775639990c619d07b6786c5d2ee3ef. 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/JMI031500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939735ec9b6e79ccde56f8abe1780d14856148490151ef0a1dd05669aefea3c4. 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/QM8Q92100001.
Penthouse Flashback - Buju Banton, Vol. 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b2586f8c2ccd1cd030d2f8b0eec804d268e76cda425c9763b42a200a11eb5f. 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/JMC712100310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9eb1c451aee32848cd7c7ec97772d930ed71567eafba432c130f0a7bb915575. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/JMC712100314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2c5087845812253869a3f739bc0cab0afa04093bf50a285a2d0728ff5e479d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZGLS2100204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845fa3e7984d73705c33afb0e7288c675204465221adba004d64ef02eb351089. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZGLS2100208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30303102abce4aea872990fa93b488f8ac863e11c21672e792769f1f85b9b882. Chain 2 (Bitcoin): anchored in block 960305 (2026-07-30T20:14:59Z), 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/QZGLS2100203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1732e0e09fd5c44cd7aaa64ae6b6dd938db186ef988451cf745b359c71b51c04. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T23:09:42Z), 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/JMI051300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d17a70e0c325d650631309b881cc72341745a78302a9e489367db8d28a3b391. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JMI051300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b98b4b1d448359831e9ef42bc8f9aec3974f4468e950c7b6cf0bd2d597651bf. 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/JMI051300026.
Penthouse Flashback Series: Freddie McGregor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87859b499c4a48f86e27865cf6016bdd6a172af1b00d21f7ec7d7977c3f2e527. 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/JMC711301896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9531621cc16d3f0bbfba704d632b02838003ee700bd63e1621a3d77383ab0a24. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USA2P2111532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16fce5b2d7958eb7ecfc17453272b41304740bd964ef7af9365f398d07003efe. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZS7J2283138.