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 0xb886d5348fc8bcd987220038ca7ef99071e3f7509706ac0e00e841747c8c46f0. 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/76fc2589-f7f7-4f39-9378-9d01aec82770.json and https://artists.proofprofile.net/proofs/artist/76fc2589-f7f7-4f39-9378-9d01aec82770.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Where Were You / I'll Have to Dance Then (On My Own)
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 0xedc87acef8916d23b2f8036862bff665740c10fe4f545e1489d2abb36d686286. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBCKK2465801.
Devils, Rats & Piggies -- A Special Message from Godzilla
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a6cadf475fe5339ce34f587cf2c3d44e13431585cca706fa52ab18ef213150. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USA4C0208002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae30eb1ff635d37b522e53c1ad7a6820bede689dbbbc29bc795fc99bcf41f1a5. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USA4C0208003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5629722ce4c7bc8fd894334ae8bf269aae83d1ac7c6224815eec6c25ea5799f. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/USA4C0208004.
Psycho Cupid - Danceband On the Edge of Time
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6670608630b73c2a637969d33ddb837370310a4385ceaeed6060fd0e2ebd0500. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/USA4C0208005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aeb6053141d402fd794a1420cb21bccbe76bcd6248c8f8385f91588862e6548. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USA4C0208006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7c5db2bc0e82b8c197bafd2def2a0e16e1b23b77424745719e2f5d28b28f5d. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/USA4C0208007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb785f59d6f044a4594ac2cd95b28198b777921e28eadbb82a304519960a0591f. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/USA4C0208010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bb1dd43af1f132227412622889a043ea371002d197240b8d3b33573a5d88d3. 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/US2391342102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371a63f64210f974ca5be356d82a1809e7dc065ea6f55b54dc4e5e5f4ce921ba. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/US2391342103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266449f1266a198bf9a9acffda3feb397a629458ed4ea242d5564a228331171c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US2391342105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1122ebbfb3d51de9cc58bfa4f7596cebd6311111d0ad4d80ae82379c1527ea. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/US2391342107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a204ba04b5e0f456ad957d728c5b48aece8af06d1f55bbce6a2287b271f997. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US2391352002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12315fd08fe8f1dc1cda1b5260e24f51e1f2a957b14a5caffeffa3e43d4c73a0. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/US2391352003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a5107653c9a97f3293f5d45e7ef0affed63b5e4d65815f59fbc172edcc33b6. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/US2391352004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49b668af384c3b75bcdc437ab76bd99d846a698f927cba6043b31d3de5e850e. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/US2391352005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb96afcb0fbad7cf7b5645824a65a2e8e9c49a2a703b9f53417cd09c4bd9de87. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T13:52:01Z), 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/US2391352006.
I Have Been to Heaven and Back: Hen's Teeth and Other Lost Fragments of Un-Popular Culture Vol. 1
Where Were You?: Hen's Teeth and Other Lost Fragments of Un-Popular Culture Vol.2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ff027a31b0ac699ff93d5ad9cee2fef583744458b46417807a392278d55ff4. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/USA4C9905915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da76e0a579afe06d1b370354e6d3135a4d49978c8857d0fd83e72ffd9acfadd. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US2391036001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce3a7ad39f446c6a983aab10838caf5308c871e07659d3aab3d9bc5981385bb. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/US2391036004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b7925ab04f02ef12da8b0a88be972b41d2adab077d1d43fd840a8db553992e. 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/US2391036032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b00c4e1658e3bc1ceb6bb5a5380b1d3a36c1cb190197013b26a60e3bb3943e. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/GBCKK2577011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82104503d9f54da1e90e395bc73bdace999455dfe471acb5440e2b29323f37c2. 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/GBCKK2577005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4aea711d056dd5155ee7105868c35f5eb92a7e1af71696310f5a1e6efe5027. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBCKK2577004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405c6f9c2e2e5250d2c3263641bb5d6a45a120c0c8ceea6fe1b882719db0d609. 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/US2Y30700083.
Where Were You? Independent Music From Leeds 1978-1989
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a9ed4272620c4e375e0d92e24bf458435ace53991a7ecc5bf78dc73bfb114b. 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/GBBLY2302216.