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 0x5c716560019bd37a2490f8f37f11ee25261ce24963a4865cc83425cc49ded11f. 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/5aec1308-5991-4a73-bb76-0c43cb1dd8a2.json and https://artists.proofprofile.net/proofs/artist/5aec1308-5991-4a73-bb76-0c43cb1dd8a2.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 0x9ec1220dfef179cd04fe7a7266c349cf12f47d8b3224fe0b18bcd2cedbcf325b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GB8KE2311596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e903d1cf45e1e60f5c89cfac8a67c4206ea27d12ef3dda0e7115b7ade42f84. 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/GB8KE2311598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcecf28ba6ee62d4b9643fc6f3591ab47e20ea0bbf8c201997da1fde36dfc9e97. 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/GB8KE2311599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d706c52301075b27773427677b2b82f1aac2e642461aa2ca803808ca855f35a. 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/NL8RL2407904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317aefc1d540f466262139b07d2f5041e18c5d6dc5fe8a48c6fde60f9395f3c1. 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/US39N2311106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd2d8c3f12274bf84960fc0981d72ba0b8db703f51741b22d24439b72a7d88b. 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/FRX762112785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f130306ff3b6395fab4238a0b74e4e47e54c18c7f02a70f7d7372e9f132eeb. 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/GB8KE2214630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3565ac50da5c7f75a64708a243ab671eba5654eb5dd03e7b4609a6ce95059d3c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCAGG2232744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46884b4cc53cc302cb613396082782b1b7b5ab2531f34138b13faaf763c4a1e6. 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/TCAFO2116401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865b7fe655d2a8d0b9bb3d3c87bc6c4d9a695ee04287e58e8204de8f72ae1ee4. 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/TCAFN2136208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca09ee9f4c77f9b268402bbadb75155562d982bda7dc2756dad6586e8908730. 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/TCAER2055122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39e96fda87d546e9a5b277f0a5fc910c203ea6e9d7e3af32491d859095dfcfa. 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/TCAER2055129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8c6a2d2908e0843d657c8529bf02b98379d9514a6bd18a6729f06414431f5f. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TCAER2055113.
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 0xd8753e6130747497a8ca90f7bb3fda5e0f8fe8bb547e5f3a15d1013247792fca. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TCAER2055119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812066b7d1a8c04ff00cfac3bbc505ba3cbc75f029e02e05b9a381d015dd440b. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/TCAER2055136.
R U MAD? (feat. P Money, Little Dee, & Dreps)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32fe14fc7cb9674b6aea59dbbc7c641721b3a6290d6ddd1e3c1594d344f9e285. 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/UKXN22099053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b32a292d769451b065d0dba91e9140f24692a2c195cf4deb905ad4fab98651. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GB8KE1758076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32fe14fc7cb9674b6aea59dbbc7c641721b3a6290d6ddd1e3c1594d344f9e285. 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/UKXN22099053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32fe14fc7cb9674b6aea59dbbc7c641721b3a6290d6ddd1e3c1594d344f9e285. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/UKXN22099053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13cadc6cfba74b085a20d0d8f7f0b7b6153354c2727863d8463fece710d85fe4. 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/TCAFZ2115217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8430b6fa638342eb81083fec2b76e901ef506d80abd1fc501b9b300a3373ac5. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/GB2LD1800476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14cff7494f49975656d150498f6868ed5a51aea0f4949b9a7bf40f7310089747. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/TCAGN2231839.