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 0x5b657e29cd88866c5c6ec7f83ab23ed75213009cb5f3270c05e08b7af8f7b840. 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/2aee7a83-98e9-4428-b616-aff280596e7c.json and https://artists.proofprofile.net/proofs/artist/2aee7a83-98e9-4428-b616-aff280596e7c.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 0x08b4e68eba9527f284307830482dae491b0adb94cd4814f72202b911c49b80d5. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/AUMEV2176030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de844af101ec3f91aeb3d6109a966a684b180074cd7818037bb7431ff7cc75e. 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/AUMEV2290521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c0efd33673d7d13ae07f2f925036053b757abac461d137c01b1ab179738a33. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/AUMEV2223071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec210a245b814d88f001d022eb2b6af894ce3f2fd21e25a16ea68ce54779120. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/AUMEV2223075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac62b27e79609cd63f620dc82f39571783ecd98c187da8b6554c670eea7548f6. 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/AUMEV2358019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3547a9ac0c60d0e5e9945eefdad6a9451a4c4b625d41398b88f00e43104c62. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/AUMEV2365597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7abbc3535e356cf748272fa7fd98750476eac7497b5eb588ac4377d238ce73e. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/AUMEV2364982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e59a7668726c197afadd5f385b80cb0d2a5aa737b9d3a2a02434734a32364fe. 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/AUMEV2394196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8690d8e6442dfcb02370c376bbb53edad29c37b9aff0e03b9736633508f9052c. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QMFMF2343318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa65e006fb1e983b5c48dcda9763e4976098284e8716bcac0cc9aa4ba2c2ba1. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/AUMEV2431741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926b5f797c5642b538a2a462388e62cffce2bfa87b0fbb02cc633a7315236bbe. 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/AUMEV2432040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc531f5b20c1b6aed908d79e43a1274abebabb1bc01fa25ed453169d1a0f71b6. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/AUMEV2432048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b9e1d201c67455f13eca0264073d5e7f96d41c072b6b465984b2626a3acca6. 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/AUMEV2459998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d6c4c24b1bc944da271637d0d702a0f6ff3e6c342f917322de7dab08384bbe. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM7282441219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81b09f91f0915ffcc7b5cfd4470b8725131481efb5bd42fb82b4b0b3b8182c4. 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/QMFME2365822.
Aemeralds Presents: Library Aesthetics, Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f09b463376e4011c6b0e44f32ecbf894d0601c14b8de82338067a43a16e856. 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/QM7282441359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588eb6cf131305576ee879905155726ef4175274f823fe3acb8b43c663390642. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QM24S2202679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d6c4c24b1bc944da271637d0d702a0f6ff3e6c342f917322de7dab08384bbe. 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/QM7282441219.