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 0x32826cf4c215e6c9c203563e88d145a9ac851ea142d89b1b394fb17921cec4dc. 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/282d2517-d382-49bf-8bb2-de8f8b085e0b.json and https://artists.proofprofile.net/proofs/artist/282d2517-d382-49bf-8bb2-de8f8b085e0b.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 0x6ec257606f39b20965dd42525607a62539d792ac72541a80b8f3fa8e1581f10c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAEB1948224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6549c93109e065bbfcd7d7197a1c994134ef5bb0ee859467d6efd9b13c86e66. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAEB1948226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c09215c2f07e40aa8e77cd5050930cacc666bacbbb653c7d5e64c9fcbdabc6a. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TCAEB1948227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7fe352e60dd22ef9f5c493fe2731b4eddf1fd8a2dae9eacdbd78c76a9badcef. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/TCAEB1948231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5feb4b0ae9403cacecb0016b15718fac03cda4c965b7495bca27c448a5abe36a. 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/TCAEB1948232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750b20cf4c9291b0f26dabe9930d620694377ba2cfde3004a8faf4b725705955. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAEB1948236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48dd0de86c97b7c0942c47da8e514b29227d53bb1aa5e305d6752fd590417793. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/FRP8I2002390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8825f5cd1fb46643f27cd7ff55b064780199fcb8d8134b3c06012aa6b2bd88. 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/FRDC52200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19115476a9c60e7a00ac956f3e268d300968cc635e25472de41b93be99f137a. 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/FRDC52200100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80ad061275f0cd81507780c63fd7758e46018467842f13b4d02889d922c92e5. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FRDC52200120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35606587e4723b0d90f272b2afd27301cf6b8da4b2fa0072e7ab29cbd4de5341. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FRDC52200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b1c47120445ac2eb7e391fd170d0add5c867e199391d74c0f9690d61291be1. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/FRP812002390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be9986ad48db56f03333a4ce4c66a95da9c0275307f416f10a880ac7a1d8546. 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/FRDC52400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a02b4b8dd0541424c92bfd4acaa0916455e336c9df8817f994394c12c0f3fb. 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/FRDC52400060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30bdd40d8f904c2477bf6117f795362fac9fa53e2cac7147bf9799465b3a28c. 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/FRDC52400070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8e79a179701f5cbb1ca4091556182c14abec9a0f8eac0235e84b7303950705. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/FRDC52500020.