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 0x9174da1d272f87490ca6957a260ba15cfe645260a3a5aed62256334c8f8cf682. 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/880d27a2-b8b7-4022-8767-51888ec7575f.json and https://artists.proofprofile.net/proofs/artist/880d27a2-b8b7-4022-8767-51888ec7575f.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 0xb08a4f794093731da06016dcefd7d1c79c9cc04b7d798173a3bcf3fa05e1de5f. 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/QZFZ72123029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1793dda0a0aae3595f10ef06e37e471871f0153028282659bc5a2825bcb26b9. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/QZMER2020146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a4840d3163722a236f8482ca2a1c2a54021e0b7545665de2e8dcc792e4158f. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/QZDA82140010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912f78da543eb29d3f8cbb5fd333a765e095361ec7b3778d6710ff298144b62f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZDA72096495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5975b0d258942c32357ca22f7753ab86e181c5e656f6339ef2d7b5c20fa13c. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/QZDA72096487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0703f8bd5b15d3a5de5f428e6fb57b440812f0b91d56405d0ebd937af4a88194. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZDA72096489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d13d23753fbb701502897dac72b672d6ecc96add2f57a0d75c1d0a68506f25. 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/QZDA81860653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec8df1b840fca5d112289db20dead73fbb51b97bfe879cbf971a7b8d7ca3de8. 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/QZDA81860657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8893cf11f3f43f675a1985c767e4118518caaea55ea091b89616aaaa0d3e6541. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/TCADT1850753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd886092073ad2ab07cbb8ce7f2ca33b9755e1c88a86f001605badfa730abe79d. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZDA81860655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03d8ea29ccaac14759eb5f35e2f89643efb54e941512d52e629ac11be7b1b56. 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/TCABH1297053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93920d08a2e7500e3616b1a85184d915eb23fd58e46d723b4986cf65f8662f06. 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/TCABH1297054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a3b44e2255c691488b5f2de961716c98a57fea4419680c277798fdd8fd4a17. 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/TCABH1297055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961b3ca38297fb0397e834fedb4c92035f0c7aac71fc9134e8e99b90a68dd5d3. 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/TCABH1297056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557db51774bd6c755eee531bf36c88dad8b1a80d2192ca346e58e2468b5930db. 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/TCABH1297059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa298500aa24f114c4153c349e6118005377276fefad911fb833b592bd3dd80fe. 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/TCABH1297061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab590709d51db22c9e46533a70bc7f16dd588c5c8ba63497c84665e98b84beee. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/TCABH1297052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721812c9b938b8dfce2758cb0c181f08f7556dc83e020f5cc1b5600e8586b2e1. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/TCABH1297060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e38656e37954a30ecb14064d5e527bc75d0b24da9ad76afbe0eac248a305ed. 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/TCADE1716899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d316a2a5a25276af43da147ab34aa0412c67f6608fc218cf0a972c6382e3ce0. 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/TCADE1716901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574db9b3efd45cdd36fdc334459fc57d3ea8423d40748774a9384a3db18063b5. 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/TCADE1716900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89920acc960a03f6d0456b6abfa500fcf2a1a9499f5e734a1812461ba1cfcb0f. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/TCADE1716903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37064cbdd471fd0bc24200d087d8b34116f83e8b9f06b3712a7fc78584f8c455. 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/QZDA81819721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2622df356e1fb061398c37425f73c3d570db8afa7c4cebebafe95b6fdf42100f. 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/QZPLS2028712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf21fcc5a6efd26b0ccfb60b87c32cad1047cb4371c32fa3980231533b7d6fc0. 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/TCABW1429025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956aaf4ab18124213e23f6b77c4fee144ad12f70d8da034374c6eceac7efbdd9. 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/TCABW1429027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641ef8e8cb14866a5b7c37a3f1029132fefaeb96d489e03fb073c59c23a31495. 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/TCABW1429028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771e6aa68241f33fedc35d8d1fde5f97bb99756e9f2a9b0d70da26592162ab91. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCABW1429029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7c41b4a923ec8289486685160edf507d5963c143b8c42843161e682c6908d3. 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/TCABW1429030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297941c21fce8c40ec48fd5325d0e6455e69fef2ca4ce2ba0ca484e0c2fc5d5a. 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/TCABW1429032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfea69baaadfdccaea7339b5b6f29a4244c548d7d72f65c9ecabe6f2b385c6bd. 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/TCABG1285399.