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 0x133028f5a1053f06592d80812866eacf64b84fd082184bd05a887a3e6f41820e. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5a620a6e-0fe4-48d1-8299-4b02b9e2a60d.json and https://artists.proofprofile.net/proofs/artist/5a620a6e-0fe4-48d1-8299-4b02b9e2a60d.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 0xa18c6de99130afb207a8b5f2b964c557c610ec3356eb87d81aff4f3c5d5433ff. 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/QZNWV2393577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda860d798765b561f6f86d69ecf08bfcfb399ba557ff23c63ff95cffab0889b7. 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/QZMEQ2340166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2da0d7b539d5db3c7c6da8560a54bdd4d7c517515928e8bbe30360ff1b7736. 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/QZNWV2393578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275d6ee83e65d95c66271acf4e064734edc188a0c84bd597caf03c1b2bde207e. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/QZNWV2393579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x073980d74eb29eefb076ae70ea6b4219f0d8f7702d0e3807c8558e78c969ce59. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZNWV2393580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f694f067af5a232e68fec14092d7c34dc38229397ff9455aa472e84c28abfe9. 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/QZNWV2393581.
A Gargantuan Structure Of Mutilated Atrocities
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5daa3f22d7fa8de1f441dc7ebf90ec1b02528003f9733f02585ce8ada83e57d2. 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/QZK6Q2440651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0a5f8da38106f9a90c78f210a42af2c05882af9c4abf834274aa8b34beceb4. 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/QZDA62463360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81be121749b61a81eeab285ff432f901c97167c20a3f0b166e9b57edb1d18b1e. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/QZK6Q2440652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317f4a8b1a370ee5622d41ec65d885560d8b6070be3c5f032c7ec3a45020fa82. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZK6Q2440653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e90699ac6f11f4b850117d8f178a90918d82453ee4aef29b731addf2b6a6dcb. 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/QZK6Q2440654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0056e9f81559da2c90b12d296d3280a56873bb83cf80e8cd9b3d9da274e6a681. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/QZK6Q2440655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02fb6bc020e0d32453c0462d1fe3a630fa297176b38e6d0201f05c3955ad554. 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/QZK6Q2440656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029b0484e5e07166b52b02ddd04c2c230ecc962062866bca2385cbd845b3ade5. 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/QZK6Q2440657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f5c4adf08df5082f0b5053129f3e96caed2d5bb1f06c8302da9234522c1fb7. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/QZK6Q2440658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdff8ae42ef0aed4331c5efd692d95da71a2c0d631abb45d3389ce27a230348f. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/QZHNC2488173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce894f5709bd46d191b8074eede6fb521fe24c1e8036452747f55d7f03498a5. 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/ESA092501494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6013fc4d66abbda53ced7aaff78b3144fb239f52fa92d38e30b051a433e17a43. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/ESA092501495.
Tortured Testicularly for 800 Consecutive Days
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8844908e769f4020df56ce39ae8416aa38ef4e4a80b37ae4ae212fc71bcd52. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/ESA092501496.
Cows Breakfasting Humans with Human Milk
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef05da7fadcff9e5294b7219999e72de859159f8d9935fdc8738c8d621d5969e. 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/ESA092501497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c48f4a268fdd5a7b1820ae371b96c2b9ebe0c554f28abc68e539f943f456e1. 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/ESA092501498.
Anxiously Anxious to Kill Todays 29th Victim
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef696adddb12f3c8cacb40e819cc19c822cb91725da1baa3a59f264cdf82b85. 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/ESA092501500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653a70a8aa2246c2ed67d3fe176c959048c0898047488de0081f2a3002dbbd6d. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/ESA092501501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f07df6507abc7c88b7964234b7c4d80880723c2cb5696ad36fefa5e4541bb31. 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/ESA092334198.