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 0xfbf6062f83d347371968d327a3db6f567dd7480b7e93ded870b33471a4e2e0b0. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/997b2e0a-4db4-4d44-89c7-ff6ed89fc577.json and https://artists.proofprofile.net/proofs/artist/997b2e0a-4db4-4d44-89c7-ff6ed89fc577.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 0xacfbc81e277e1a875676c724fe3460cde3d29a00602c46f6e79d32ecb4934ed1. 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/SE6XX2117678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacfbc81e277e1a875676c724fe3460cde3d29a00602c46f6e79d32ecb4934ed1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SE6XX2117678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bafe3768e8e28c165eb5b24e67d7ce32a0f1bb9bfcb86a87bf2f516f30604da. 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/SE5BU2244809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9803ebd9c10fe34b998cea0921697c4d0b1b7e98cf7c7eb55b02ceabee602aa1. 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/SE6HN2285273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041ab70639277687ccf147076d19e38a8e96bc55dcf11e594c7deec41b5acd70. 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/SE6HN2285274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9e39400429a07e55577291b42d810b373b35691ecdcbc922a2f64472775bc0. 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/UKZGC2201449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9e39400429a07e55577291b42d810b373b35691ecdcbc922a2f64472775bc0. 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/UKZGC2201449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7d5d3879ff0867a0e075ebd0f9f33c62ddcf3354f2729e3ae287f7e2598087. 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/UKZGC2304928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef6a03e645714ab64f37f1c3c0a4683e09a8e8736b2eadc738dc9e7a064a30b. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:09:34Z), 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/UKZGC2307988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8611a5ddeb6b00e0a8fec7be8600b325861567724fa0c7928ca2d4863f080978. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/UKZGC2410776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b2486d5f1ba5a166dcd6c1290f63a22f5d95d667815683ac774a4b9a0fdb05. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:40:46Z), 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/UKZGC2411331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d1ce6ce8b318b8dc48cdfa7994d94b32f9cb5a2372af5239ce2bfc7466e97e. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/UKZGC2505664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1514513dc97bdcf10545fd36874d8f35b8b62d3210de06afd284ac3baf522886. 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/QZVEM2310045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a9c0b74230615b46f16876236541baf088f90e3ffad0507497ff383d3a12ed. 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/QZK6J2088931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff081835e2dcd7fe110aa5a0ac4223dfc642faeab09fbf8aea4140130526ad51. 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/SE62M2201944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb031920a80acd4cfb68765d4ce2c6fa4344bb10214b21923085fe1d4c9178266. 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/SE6XW2257114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565a8b5f83bdf1bb4af53acad2caaabe5ea430e0be91ab80e023d3078d382aed. 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/SE5BU2216053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee522a6a6215a45c1056d838aa4416113aacb16bcb6ca96c67bb6a8f4547b3e8. 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/QZN882179742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ba4c9312e7315e31767e3cf13eff50e8e65b4cd4a2a4c9a91549d9dfa7ada6. 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/SE5BU2130490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a9c0b74230615b46f16876236541baf088f90e3ffad0507497ff383d3a12ed. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZK6J2088931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad01526d2166a7102b5997b9b483a60d389fbe77ac091c10ef587fdf58d8a061. 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/SE5BU2313486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb031920a80acd4cfb68765d4ce2c6fa4344bb10214b21923085fe1d4c9178266. 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/SE6XW2257114.