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 0xfe6ebd6cc582966629a6a667c40f1e32281b1f2d838c3d3561404218ff98da78. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c16eb3cf-9967-4b17-8d65-c5fd2e6aabc5.json and https://artists.proofprofile.net/proofs/artist/c16eb3cf-9967-4b17-8d65-c5fd2e6aabc5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Plague Infested Urban Dump Of The Future
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 0x8971c3e918bf5d13ffba318a13b94f949ee55566b610783cf2c1b89f20a71756. 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/QZFYY2443840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf65769b2785119fc96b66d32f3407b12af5aa6f26c4a1b425d4ca1043897edc. 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/QZFYY2443841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca6e67d59b66e47f26c6f85994d07b5e10b5295e7829db0ecd35256e107147b. 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/QZFYY2443842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7841fc358a1c884a87187d9ff60ebbb38b4358bfa0c56c1fc352166768203d8b. 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/QZFYY2443843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7893c85c1a010f05e7b89a2cd9d0fed48739a55a0f36e8f06dea63afad319179. 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/QZFYY2443844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4cc9c4e97cc01dbb8f5877195a6605296320ad90baf123c14b03ad494b1f742. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QZFYY2443846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd1a9c16b00b8955f341198ffaa76cf2ed11f68b56f54a8905ceef646c2b941. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZFYY2443847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8590fe969d8580433676e24be5d59dd1ec1ee8d8143022ec80bb67d7930fb671. 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/QZFYY2443848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9455b71426f48864593a4bf0562e95b3944a89eb6a531abaae95916c582633c5. 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/QZFYY2443849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278f1de7d41ca5c8b18e485e4549f47b032d1f00a95b63688ac4dfc45d72f40f. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/QZFYY2443850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab3c04c1fda92fcb97e7b2ac331946a0a256cab07de6f42d9ade623a50b6966. 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/QZFYY2443851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a21123ec4046918205a3a69db5ad447d08a0cca72df91e05128e4e3933f67d6. 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/QZFYY2443852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55fdcb11bc382b9f14223d8c5f5459101c39deed424f12c18f5b6cd011617aa. 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/QZFYY2443853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddc75e2cd5e4650434d2c4c5a047aa5d6adde1e89cb479ad5ce052ad318e2bd. 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/QZFYY2443854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8968615fc7caff3c991d9a01a9358afdeca1f0e5e585d9db4aca6fdc91ec2fb9. 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/QZFYY2443855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce462511d30ef9713442aeb6f1607bb00847e993293172cb3641f391c66e27b7. 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/CH6542045322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0781082400ec5f7da67fa807cdc990affc38921209d138890bb03393905c02d0. 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/CH6542045321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2442a6a9e7e43991591b731516c4e21f7a06c86a9c80e5e950f9626812b3876e. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/CH6542045320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f69534f78868229d29f49173e9ca5750305e56064a417225c1e5765211ccbd. 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/CH6542045319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c547d246275808884e24bb5816cb99a741dab076baac0d057303962f5d5d8b. 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/CH6542045318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b369fb1fa4ed5b4a8ad07a7e97bc18e8d81773bd1c647f17ad7948a92070d3a. 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/CH6542045317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372e38dac1b1fd9291adcf8680ae444b93668ca060e1de84183e01716bbd9cf8. 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/CH6542045313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a37a94379ad3cc8deeeb6209eaad6cf33471d5188a48f6f3e3bc65518f73114. Chain 2 (Bitcoin): anchored in block 957249 (2026-07-09T02:31:37Z), 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/CH6542045308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c58c1a17247e0c8ef530a58563ae4d158d293812e82a61518209d8cfe28f236. 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/CH6542045307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9d2acc87470b0d34666bb5691a1109f9bb22e67df08c5977f40ef7e9955e7f. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/CH6542049859.