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 0x61fb9c57ea4b8a3e7e5ccc65167352e0a4ef0b6fcf17c5af2658954b946fd665. Chain 2 (Bitcoin): anchored in block 953773 (2026-06-15T10:40:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cb790062-dfec-40b8-8e06-237e8d3bbbcc.json and https://artists.proofprofile.net/proofs/artist/cb790062-dfec-40b8-8e06-237e8d3bbbcc.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 0xa967687815fa96319513ba9846b9c192fe5adf95bb89bcf51f643118233f4fc3. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPF301400131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4069d83e39c84b25f5c4d59cd74b83df3707d9e5155be582f3598eb0df508b44. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPF301400133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8edff821934a23591cbcd6da0b360b8336ab6ed1266218bc5b50074129abff9. 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/JPF301400081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3913ac8bd6124feb4a13e6474c996220f20288f64c34d2d0fdbc292bb7df8021. 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/JPF301400045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ecfd5651e604f3b5b1f06f6a6450bda679a725e22c05b58f925c27ecf8ff8c. 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/JPF301300068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354c2d5af17c1f68cb7e401b0cd147ca115c6d6a9d12c2a9ef8cb3e0111fb1c6. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPF301400084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbab9fb175e3dedfcdbe738a17d537bc8570238ca066298834c0fa59a9421161. 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/JPF301300117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e02e923c929b68c69309698cd59606252254c7f2c1c161107bdf8f208a3a2d. 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/JPF301400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc04790524903d034ac605fb7e435f711372e7b8178f0e4b06c4aa9caa413ed. 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/JPF301300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11ad8250f28916a92f5e8af2b00f62d148cbeba088732618096d6d916fe63bc. 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/JPF301300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bacde26faeed66838d07ad5648106eb406faf8cf58f56c5ed989d7893a14ad1. 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/JPF301300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1953834b68c4728722e83bbc71afb2f7944e2b70386818173257c7c3a81419c. 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/JPF301300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f881090106105c064494f96dc965b96ababf0f80c0dbe78dfc6053411d96c93. 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/JPF301300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec750772725bdcddf08bce42ed02bd0b2518fea5f17e8f8d569a1da05ac21c1. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPF301600076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0af841b27a383fc6cd5f6f6c360a343d8f980c452613d801c057c24755aaec5. 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/JPF301500115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7727561e30a4c056607a376c6c41a3e6708a50845a6b4e713a6951a2e7aba596. 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/JPF301500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ecfd5651e604f3b5b1f06f6a6450bda679a725e22c05b58f925c27ecf8ff8c. 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/JPF301300068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6318f9f9d5b82cf6408a3ee2436093fb7ac6024e3890dc2ae72ae192be3951. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPF301300070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273e1f58621ad5814ad6f5026168a344a2f3e6272a6f9c5e747d22958f28bb19. 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/JPF301300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f513bbaf3c22bfef81956b841158de47864c6e4c9a2b715bd1852fc9757507b. 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/JPF301300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a8b9d9a3d39dc64992fbd7fabb12866c60cdbea9a3403f76ace306ba9c0bc3. 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/JPF301200124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c233fa7754667355524848017455c6005e3ac146aa00f207786b3cfbf98f6f0. 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/JPF301200125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc86d520d24eb62b7b10f0db9a6a984c5c081e9caa6452866a382d6d8c16c05. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPF301200069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382238c9856ef9a6f0fdd487275f80cfd8e10ff64415009d0713d8a6eb926cd4. 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/JPF301200071.