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 0x306df9abe3ed5a031e463c58688a519e8098dc16f71ba15463632222f279b5d6. 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/16379377-ac50-4742-ba12-fbcdb16cd876.json and https://artists.proofprofile.net/proofs/artist/16379377-ac50-4742-ba12-fbcdb16cd876.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 0x88bbc03b0c0b2fc9844e3762fcc50586bf79d064a4f366ca6ca4f1d397ce90d4. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:04:02Z), 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/ESA032077103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2a483b606c8e5b47c0773301ca451bb7018ff7e8d847ca0b17b954a22623ac. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ESA032077108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0218f26474d02b613e8adca31541b7a68371fd8ced0ac253e198387bd488f8f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ESA032077109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b96013a8a652ba8c5a2a21bda8b8e08caf4dfaad3116e93f0623e44896ad199. 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/ESA032078103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33cefa1bd6d6e4a0d8682f6482614a0fc18643aec68acce8edfc98977defcb9. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ESA032078104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ccc0571384aecec90b3f200e193af40c35f380788eedf4233d5fbf3ff68e37. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ESA032078106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c26e995c36a82ec75e9ffa092e8a03c87a3a9352c2a605f096d1551a71c8db. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ESA032078107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582b87b4a79b003ff6615296e44c88dea883492773d0e1ae1c83c00bdded6d11. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/ESA032078109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e996ae9e2ce6a78dd3c6ecd4b1fa03b0e4675c2213f0bcff53848225811ec5. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ESA032078110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774078c275bc92f9a2756504370db7848162bb4e927fa93fd2448a6a50dabb61. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ESA032078111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa56e4007b605ac79d69d4d73e6357ffc7ee322097cd77df453d4af2ae615fa4. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/ES26E2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0dda6b2967eaeae80c4d5a0ca98844324f686229a4b34945a6dcb339d3e286. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:44:05Z), 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/ES26E2300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7201b414d5e1b5cc51aea00f4dfec98c21e4ec1e87ff36e01a18703d3c833b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ES26E2300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10111b031da8cfbfa4ff1e38906f58c09e41e2c8ae62bd377ab646291a7156e0. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/ES26E2300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba729d3b291a19794eef3488c983726d182a7b1d15f36dcfccfa8e88a8360b8. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ES26E2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0856d5b4610d7cd8fd58232f055e96ff314cec257e743e401fd480f8cecca80. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ES26E2300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6673cceeb56e83e55e2863311eb978d7a542d80396c893cf1bd72ae33c2ae73b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ES26E2300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4bdea8e6de342190a12587d253fe9a723a1124b45717a1610221a4565fb9018. 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/ES26E2300039.