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 0x55106888dac9d2314f69d5a8726fde73374a0188c518dab2dc25566dd0bd80b3. 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/141a3449-3fdb-4351-9ee2-2a8542f9dd58.json and https://artists.proofprofile.net/proofs/artist/141a3449-3fdb-4351-9ee2-2a8542f9dd58.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 0x5be47576be4f3961a9d54cd175b3d6fb7023e7d8c882e626ba66728ea15652f1. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCABE1212108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25aa9c113d9a050bcb80163a814ece495851164dfb619eaeadb6e38fc4173319. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TCABE1212109.
Whiteboy (feat. Joe Stixxx, Big Smo, Brahma Bull & Mr. Sneed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704057d3c6733a0ccdc4208f5e5013a0de0444815b7a3fcc275787b683f90d41. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/TCAEA1844639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb798b835b632546dc2063cb15701ba5d5338f9947aae5493e1e1dabcb8c29f47. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAET2058960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e69354771ca3e62028b0c87fcdf4d7e9fc5c5243f95c8e6c0baf85d636784ac. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAET2059012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb920015fdcde6559420185d856f8c89b15667a2e7bf824b08090d45eb274ecf5. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZEQU2267817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df5d15bb1c78f86a1f92be0bc393ea8dc196fb7f4f41d51645e043c341357be. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAGU2388095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df9a3b2963a79b590dbc22fbaca45f07d7729c0f40f368e3e6eb108222be307. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T05:43:55Z), 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/TCAGX2390217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb277bacae10abc019436b73985fd65875603c45303bb8983eea8bf62c16d0b5. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/TCAHG2346643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27011090c6d529049b5bc7c546d8e69ada05ed3553953c9e3109c2ab1cc64d04. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/TCAHI2317848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bfd0a3e5b3f22725864520d7ddee041f14312a2c26502b594b21ea7c6927479. 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/TCAHK2316131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e717666426abe15133d7c1960d49f7a10320ea3b2601cd77394c912c046c4e. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/TCAHW2454594.
Wastin Time (feat. Zakkary Dylan Garner)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758a6e470d7de1e5a84928f8cd802de6f998df67c24eb131f7d076dc45622cec. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZEQU2400532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9bf91f7cf421f93432790d001bbb6b1fcdba7620e87c5c8f36bf162be1333b. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/TCAIY2427705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9cb2f1adf7643817db54fdcbab4a1018c08ddcc3dc19a725ae34f5c04d2106. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/TCAIY2427719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd7939a03c8d5ddeb62df136a67fe1a37d936b553f17d50eb998c2a21dbdbc5. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/TCAIY2427739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e22c7c044db6273faa0af81cf3bd54fa944e2e1a5fbae830781d51f58bb160. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/TCAIY2427758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc05ddf5b80057d9aec122f8969b86fe961865d89fe1dc7bbb4b272c7dbc79b5. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/TCAIY2427770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc16e92d74d58b0c4abafd8f6964e9d569806b2b4f588ea3177df90dc027a2dc. 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/QMDPP2101259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a97454bd9775db421d479ed98dde7ae8928744973c63bbb8566ab1d2224608. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/QZEQU2060245.