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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2343aa12e522b9a1780f302ffa807563dae7088ebbbdbcab075fdf003165f884. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/91b0104d-6e98-4468-b58a-ba774200d26e.json and https://artists.proofprofile.net/proofs/artist/91b0104d-6e98-4468-b58a-ba774200d26e.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b082391d3c5231b7fd295775d2ac89f1a36c9e8f9b6503d62dc869dbcee0d7. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/USY6C1831507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9265a064cd3ab2d033e89120814dd073e819b146855568c444ba80d68a8207ce. 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/USY6C1831603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979dd1e64d002c5594f470b643cc6f8ca29bf8157aed69bbbdcefe7a2fb67483. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/USY6C1831801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca86204fb96ab61d1c52440de14d7b8f49a9f9ee08f64de57615b61e27be62c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USY6C1831905.
Maples, Ash, and Oaks: Cedars Instrumentals
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12fef67072cddf86c852fa1715bb17d168474355a1ef0953abc75b60edfe5605. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USY6C2135202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x402863c34bfee131823d9bd18e17d05d88c38aea8d0997ed3ef043fd0bf091f1. 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/USY6C2135206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8a46e17eef945d46ae966f324218caf1fbd4fc8887279cf5d9dacfdbc01958. 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/USY6C2135207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8fb4534bd59d20509d9aef2ec70a070a9da1147537d2f0871a5502092de526. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USY6C2135209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72e0415c0098c10d582ab036d257151115b260c11f76bf20b8892c15d5ea180. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USY6C2135210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c3fde03e518481ff01a864fb35238868754b3dabb56340fb37ae47ad16764e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USY6C2135211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095c1269e02a7feb14491ffd0e4367aff1c5f46ba02eee52948a2ac53e5a1d5f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USY6C2135214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c0d76ef9f1155290081949c80c3e550a6b3113e98b9514365dfd1ac23423cb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USY6C2236701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0bb2d0c45220c10c4b1c5205a9ed363b6eae484e824d5ef9172e997f6d0499e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USY6C2236702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3743140b8b073f9737ec89636c14e5aac677737bd6d6b0ea3d216b7e7b1d9740. 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/USY6C2236712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43e1cd0ffe95531978c0223fc137f65aa5ef9e24f8d622a5ae86d595550d30a. 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/USY6C2236704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8fb0b1f0e2b8978fea597f4dd143ba94f475aa35fb803f51a33c462df034dee. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USY6C2236705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1baf416b395265c01d82ae02428439f078e2bacc02ffa3dc5cbb17fb9aa19b0. 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/USY6C2236707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf05b9a434c8185e4d98c134d2ad235abcb975a18dca936aa06af64ea1460a8. 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/USY6C2236708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa500db20e45d86a5464ccc658cd6198093562102cda8a7c73622e5a8a91b07d6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USY6C2236710.
Station 3 Review - Olga Wojciechowska Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cdcdc91e2b18f7ee91616f45a607eb191845c174587a968f73e1140f9304004. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/USY6C2236713.
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 0xa4f6fa8de43325d17ad688536512c74e7a42c58d6442c7a617f94cdca1f0bb64. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/USY6C2236703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f1dec3f48334698f7b63a2f4dca581b25d05fab9766587e6099c2d3fd9911d. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/USY6C2236715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6f3ddfe20e409675bcae05e558cd72ce5575685db390e4670fa9bf33dad9b2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USY6C2034201.