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 0xdbad41cf8f4e29280af94cb59c4fdd558946920a26f0b3e1f3567e3f3e154841. 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/71cc996b-66b1-4d99-a77a-46ec9951b6ea.json and https://artists.proofprofile.net/proofs/artist/71cc996b-66b1-4d99-a77a-46ec9951b6ea.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 0x394bc5939af98c857e92217beeb13859f792692144956bc04f1d07f556ab5431. 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/RUA1D1913777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb621a9ea7a16aa099b58a8c9ac7ef3fe82c24263657086972ea03007d7a58cc. 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/QZNJX2010812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbeaebaddfd5f443e75ef556b9018fb87edde377122f4685c31d4603e2b5cb9b. 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/RUA1D2268530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbeaebaddfd5f443e75ef556b9018fb87edde377122f4685c31d4603e2b5cb9b. 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/RUA1D2268530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e30f686f3201695224f9e6b7a2493e98ae13b4502f78af597c44958a02df2f4. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T08:02:42Z), 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/RUA1D2298469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef1bb31c746b2c2ff6e129c0250358361d47ee73e335f8c7279fde2ace747fb. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:22:08Z), 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/RUAGT2208384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef1bb31c746b2c2ff6e129c0250358361d47ee73e335f8c7279fde2ace747fb. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/RUAGT2208384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7a69628aa8298d96a967cbf30e24af65934600b2ab6d61204b09a553be530b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/RUAGT2221827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f0e20b10be75666c99e0f5f0d87e75b421429889cd21c88425dfcd2142e389. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/RUA1D2321149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f0e20b10be75666c99e0f5f0d87e75b421429889cd21c88425dfcd2142e389. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/RUA1D2321149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e34f63812e65c3658b488014df07ab4a0d026352eed8ab6fdd89298bf931466. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:19:55Z), 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/RUA1D2364958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c4f78dff24e0ed6faef2bdf6db60301f410eb3b99ffcc71678713f6e713425. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/RUAGT2337692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff50973828ca183945a23fbac386dd37e322b41ec86a54f6d852221ce06c724. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/RUAGT2348890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff50973828ca183945a23fbac386dd37e322b41ec86a54f6d852221ce06c724. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/RUAGT2348890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3d8db6fb4378744b5a36775b4bbacdae38093c36cb7052afadb2d7885ad3ed. 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/RUA1D2406208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3d8db6fb4378744b5a36775b4bbacdae38093c36cb7052afadb2d7885ad3ed. 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/RUA1D2406208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba017bc0ed174c636e628b8abc844293ef76a925b06b57eabd0832b6d9f8d22. 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/RUA1D2424573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3bd63d7ee3de2aa73c4660ed1f170578bd8551e3f16ed253ff6ed0a7d8060a4. 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/RUA1D2462650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f5be1c04f3ee225fb75a350bbedd24f2b7784ca7a6edb0d2ca95dac582ac92. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/QZMZ92521962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2293e4deb9279abb0226b3cca3d6ed3ac8fa9efa00e6cae486b99b93e51556. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZNJX2559790.