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 0xca1b234fb801c1a3dd7e81d8191e8c94893e8f16f196dd8d4915e319e372ee05. Chain 2 (Bitcoin): anchored in block 953667 (2026-06-14T17:49:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/584a7fed-a822-4a7f-bf61-04f11ce89e65.json and https://artists.proofprofile.net/proofs/artist/584a7fed-a822-4a7f-bf61-04f11ce89e65.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 0x6bce3342b1f4701287725e7c9a0403caa962a5470ecd6c5c23c64dd67d243076. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/QZK6L2107926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad1131a83ae1f38b9c7ccbb8089b2f18cd5e959f719feb5ac01ddd55394bf3e. 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/QZK6L2107927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fcdb5a71e1188d5ccb976697e121f1b0676d5a2bf73510e798bafb17cf2304. 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/QZK6L2107928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429452e80b6559cd576644da6fa19fae98d2bc441c1b4deee396f288edb6116c. 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/QZK6L2107929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6396b1b580cf21d53523b9c06729de60a1e433043c89871c032a99a419e22347. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZK6L2107930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c694a14c51a07f805c5abd6101ca84d91571ded3faa9594df8995af71d7e0a. 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/QZK6L2107931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5cf09ca81b544441687837f9209befa2fa9544d81dd47446853a04358d094ad. 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/QZK6L2107932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468c491cc3ade4d954c1b77107026d5d917d2caffd3ae1aaf5b801f3386fb889. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/QZK6L2107933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a35c5b885fae7d3fb92591c2b7ac0bcd5fdfe7a8ff6ca0c7829b9623f1850fc. 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/QZNWX2038738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ba98ce4ecdc276aafe328bfc3e0abeae1d35d56d17bd10ce7caf862ca181da. 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/QZNWX2038739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a80aa27ec45fb4b515c25bccdc0f04aa5fef3da4a3013e09800e1300e838f0. 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/QZNWX2038740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551a7945c8401b8193ac2268cc3233f319668d514c7e20de18e608cfb7202a70. 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/QZNWX2038743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3338bb11fec9bd39f338cf4b530ca01506202ac2451ff27bc8c25cb84284626. 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/QZNWX2038745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbac9fd17cd505c23dfb941670da330fc821558eee3bbbe57144d3a882bfcfa. 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/QZK6F2030452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c835465262994c6531df95d0c54b9e16a48f5e7aedc2582d7d417fc0c933fe. 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/QZK6F2030453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049ff05c573bb2d064d0bd232e2233e4f3f2d1d58811824bb922968a5f4b77a5. 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/QZK6F2030454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b71c93446f2ba11fa22b35e04de84d4963c1b6d8e99df9fd7e4624c1d398b7. 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/QZK6F2030455.
Clandestine Blessings of Thy Infernal Lord
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41508a5601ed17272ff2d40279561ba5282c25db73f987c8852215c49f856a3. 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/QZK6F2030456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff723b4a6ef72750bcb8ff0429b69cc9909f2f6259abb6fe06b539431cd6fce. 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/QZK6F2030457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb768b22c31b53c84d1cf258d6238a7bf91be63e6a4be261a555d16970bb1c520. 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/QZK6F2030458.
From the Caverns... Echos of the Undead Call
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9e8ec57f9ff11f660ee40780bdf178dd2846147f1eda29626139d6ced43a2a. 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/QZK6G2088566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb616d95bcf72b6553866a16375230d5340ab54fd8040377cf63a309f6cf9a020. 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/QZK6G2088569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eacfe69837cbb8378bd38a98d39fbf431c7ae2f3282a0cc80c66576f9c3987e. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZK6H2062760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3476035091cfc1955d8c2aa7a628cb1889201a00b7d322648b06f718f37c39. 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/QZK6H2062761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69426afb819edee31ebee4bd7db5c0463f73754359a7bbbbe431e7044ef59ac2. 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/QZK6H2062762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd80fe90efcd5fe8d0d1cb5390913743713f8517bfffddc9f75b9ac9aa8afbc. 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/QZK6H2062763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a90c7fddd025ede7fa29a83fe1d995bb8111f42ca6218aee5e6a4b12c11c4f. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZK6H2062764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92175c4ee54f1ba3d02869b145a14855a9a0cce10883430d6081036f8301a63e. 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/QZK6H2062765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f585339c36fd2b339639607a53b781819e3c33c5aaff196f4442136e66cec9d. 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/QZK6H2062767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842f5e0fca28ba1f5644da67823f47b62d9a78d5a69cc6b1341c3d7410ff9a2a. 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/QZK6H2062768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0236cb8cc168460cef21bf19672f1a629990adb9c7d78177d0b52d8a942e0c5f. 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/QZK6H2062769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed37b9757d93d4df29b5f9003f2bc85ed4513c2a01b46312fb6014b5f2f6b35e. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/QZHNC2026736.