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 0xcc04eb8d5964fdf8298649825ed07c095f3e9e1545a6989e107c09fbb1c9ddcf. 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/4e740e53-429e-4c13-bd59-02b8d23bbe56.json and https://artists.proofprofile.net/proofs/artist/4e740e53-429e-4c13-bd59-02b8d23bbe56.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 0x2167f7e8ba414f2c7e4d609108341984f328ef33a427cc65b18464383e75d33d. 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/USA2Y0400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957f51ef2b3e4a12c19a6de501fbb2cf95e40b464ce83ffdec3b1820bba024a3. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:04:30Z), 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/USA2Y0400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89bf1ef118a71e9f9ae76e168b0f4bd9fdb59f73c4ebaf5358b9227231904b2d. 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/USA2Y0600017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b81a092ff8743c0e9c4c0e94691a1cb164a8c32e3f5e849ad29f87e9316b32. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USA2Y0600020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eac6568e3ec5006fa6bd3ac34175502c76644307ded1b0cab9fe673eadbc88f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US2CT0810013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bdfb709f352b0c27f61e5805a8dc0cfde78aa6ae0a27993ae062645491955a. 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/US2CT0810017.
Fallen House Sunken City (Instrumentals)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4fd30b2a2f125b47f494001dd1f6adeadcc042e995a33c42abdb2297dd837b. 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/QM5VX1500156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4eebbe63c860455a5870a5b1cc71044e382bfc4cf6fb24d57a3a5b75e61817. 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/QM5VX1500157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb869276edcd114813249812b24ba4620385c0182562bb2080423b208b3fabea1. 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/QM5VX1500159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc4e6aab861c6722db086483b64b3bb987a8968de3a9fb94fa68fa84f26f5a9. 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/QM5VX1500161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1040527403ec642d430e727141cdf155c99e856d9240c80a143402e5208b0a7. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QM5VX1500164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1051eb1156ca6db93072fdc90a6f6fad133baca48d339f53b632e979597b1c4a. 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/QM5VX1500165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c577edae272e7ba2699878b74a33a47e08c300618ad392b08d108f5af51366d. 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/USA2Y0400180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c7c7a42c18b081e0ccfb914cc2fea60a7d614d8ae6f73bbb5193c797fc824c. 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/USA2Y0400209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb639f1ca340aa2a593a1af0fa9508c64733e6bad211ede65fcb3b2036adeb2a6. 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/USA2Y0400219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960ffb25b8b6e58165e0af2f8db1d831fe35b8170f58a3b56822fb780ea03e97. 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/USA2Y0400231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318adf112aed8ee44483a82e6731d8dbe4b97a3d1a733c7b0faf65dc9f193245. 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/USA2Y0400148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd01b9bc24e3c3c7c35e82d9a9a23231790dbb4748620a38f6bcd4929aab0677. 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/USA2Y0400149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355ed4f332f0a62d6f7ca07b6a7407b2bd56afedb8be4189220fb1a5498de4c3. 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/USA2Y0400150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ade785e2fad0a9c039953feffd3b6a87179378910868fc9fe42700565ca9b76. 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/USA2Y0400151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5fba1fd6ee8bb9b8a5d503cb31ce4c69b015568f3f3595512073a4f386706b. 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/USA2Y0400152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88d4261eb3ee734b98ac298cf1660a0e42d31124c269158e27a0877730c8c74. 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/USA2Y0400153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190a687c29dd8a4b0f8b7af883054400a1bdc18577117db0d0c29fab1e5ed866. 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/USA2Y0400154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3283d594ce5594217dcdbaea0b73452a3493606f1b51d0a36c7950119a79dd. 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/USA2Y0400155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5471b44e3867a7a7d92c4b85ed1cda25d0398c3ca9039c45c846dbbfaa3374b. 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/USA2Y0400157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d345443772c9961e435d1fa6aa176ed597aedb836f8a3e1c38a11f4ba3a8e98. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/USA2Y0400179.
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 0x3aab3bfad43e89b122687e4136decaf46db6b7d44d1bf79b1ec992de069fe2d7. 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/TCAFA2080676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf116aa8b26a6569f71b41782373ac6953c8540a029b408f3defec3f3506b0f36. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USA2Y0400225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00dcc618d4376f61a8011c1b23e95df5ef463a6a5d0df73e9296ff54c5bcad6. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/USA2Y0400230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4fcea2c842071dca815fe89703eb98db07852f752aa5829b3cad8feb320745. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USA2Y0400236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e78a84fbe5a722fc1333cf570015d519904bee29ae4efc1af16536a4528b3e. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USA2Y0400156.