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 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 0x808bc7f443a315b4cf4682d370e3ae9800fc9dc336921605515ebcd6023b772c. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/92d718c8-6369-4bd1-86f6-e33777452d4a.json and https://artists.proofprofile.net/proofs/artist/92d718c8-6369-4bd1-86f6-e33777452d4a.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 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 0x16cbad3b970fd88ea53e6842283587b0f8d00fb8de55580099dd4a01fd8615aa. 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/USY252401177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444f6243672799c3ad8c76551dddd22cd13f8b2714059c0a625733610e3d1313. 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/USY252401178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29cade404ce81f0c09b7955ab18f68f06c72e1fcb62735271ecb16ae903e2ebf. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USY252401179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee51f647e04a0ba46796e0d62d8b2bbfc21e96cab38eae29f6efb944206d5af6. 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/USY252401180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23305a03d10d1b481229e6188a741cbf573d780c59341998792946c2b052a469. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USY252401181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab66ba7f603da1a5ef70d43c9908951a286c9619eb5d9556fd8f715454954ee. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/USY252401182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04248d5e49a5141d3b659e8158e10f039c6f3cfa8fadfe80782f1ffbbb85ff29. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/USY252401183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe728a52c5b7139bc0480bc539fd2dbda99e0ca1a0ed960ab0c91f8bd42ef69. 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/USY252401184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84082236de0e79bef1b18a3cdb52d0f347292655826b7d3bf302e28f32dcfab4. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/USY252401185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a486e90da1d35dbe3f6267f8e54a67d66d646fc357be618ae11b74f2c65d5ef. 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/USY252401186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc59050e9ffdd630aa90c0617aa1ef3fe293e8ffe78c77f80b5809b22c5b0a0. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/USY252401187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221ee876c713c7ee96eaf92acf70bbdfca2270797fee18b7c8a2108ad0b12b06. 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/USY252401188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bfcb46d1904b34444e309e42caead344a0c7d82e3c38031e2344457923454db. 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/USY252401190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9710e9b8328daa584c761abd86e4f8048a6c5b9d263dc21d1e661471e6e950e0. 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/USY252401191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ea236603c41080dac563386ac8ad52b7dac44cfd7a0e9c1230271f91c04aeb. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/USY252401450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd855770fa7739e8413819be3ae443f6e302e49cd55a13bf4ec05bdec3f2169c8. 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/USY252401451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabae8aa62c098ab1132eaa20bf8c67c604ef0c8c67963d40f8ee8329f1aeeb23. 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/USY252401452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc09f75a897e255fababbc30548c3bc6076c832a2a39019c25e68e4d7b2a850. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USY252401453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099ddaffd137960e36e343e39242e05b0ca4b96050b95183084f29081104e638. 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/USY252401454.
Embryonic Breeding for Cannibalistic Devourment
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0031604deb2bed5414827eeb4572e5fbdb16f3368bd422683e2368b8d87eeba. 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/USY252401455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2513595dfaa4735a8e55901453fe9908aae43ebb7419c3a81b5de20711877460. 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/USY252401456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063c9ceb2a1fc2bc8cb1eedb8d9d0446c287bf33d1a2a63d95ed526650f38ee1. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USY252401457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847bde44eb242c15d9c192a305ce0e094d13de7f93294bc6f060a7269faf89b2. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/USY252401458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf6be6a155e28f59895b7ad453ccebd10d745f67be9c1752ffeb4b03619ad9e. 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/USY252401391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef20affdf4561b98b4ed1c80e9d8733d55afab40a7880cdb4d48dab2fd980cff. 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/USY252401392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8134c581b8da79064c64aa5b2487eaaf183497f50425c7d671ce51b75befa4. 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/USY252401393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5644cd028356f84dd5f593709fdab939c877a17ccde8825d01fc4044b4917b3c. 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/USY252401394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac494d275f2752fa1d874ab8721b3c7386910fdb38863ff8f8aa818182ecaec5. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/USY252401395.
Lunatic of God's Creation (Deicide cover)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4550814299bbba2902ea9489d1b2855572e0ad0a40e25010a37a88f339e3e89. 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/USY252401396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4649fdc7aa615ad128b805cc78929822a6ad2356dd6d5e0062733c05e677276b. 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/USY252401397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb2dc69f5986970752d9e6b679836073ab6e7f65c0400ce88be23f4175634f5. 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/USY252401398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878068133164516e930a82574a283ab1b9440b4fccc7d1aadd7fe0017b895b79. 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/USY252401399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b48c233d1870cedea3252cdea50521f4d9bda1e22239fb62d3b39688d85d1ec. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USY252401400.