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 0x8cec84b477227543ec5e1dab7704a323097a424cd18b8ae06257a502ab5ba9c0. 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/9859224b-0970-4cba-b0d4-3b0edd67ad73.json and https://artists.proofprofile.net/proofs/artist/9859224b-0970-4cba-b0d4-3b0edd67ad73.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 0x2a4cfc5653cff19fd4c942acfdb9340f16313c7d9ad9e258b7c904f3d79ea2c6. 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/USWB19903036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd643eff368dd1cf5b6db335ee7a9cc1fc9334d04a3bb9bcc3c34993cde72c26c. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/USWB19903041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad56753a9b880fd1435203609ac187c6a9ec793f3329d0fe2d398fbed627c729. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:35:00Z), 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/USWB19903040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582ead814d74d7f4f00d6d6ce04f91cdd19c388a477364c9c16415272367ca32. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USWB19903039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf798b81286a555c18d4d084e3ca906817e250d79f0f71c137f7cfae8afb745f5. 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/USWB19903042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3428847c4accd49aa6f58869880c2001553adee57c2ecf4e48dd10c694b35e05. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USWB19903043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe058846d4364d2e763f9f244ab0dbf85a9ae0b76c1e02d1b62840ec1b62f34f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:06:14Z), 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/USWB19903044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa3c2e13b64064f091c4f11c8f39e93c01757f4731f83c694f08c0966155ca4. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/USWB19903045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7983b774aae05483af8711d0cc9efca38541e8e4368f43676bcc219848b3c48. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USWB10002903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a69ad974b8ba19e04e27722125ac3ae95dca0b2e77f10e9fc31af6024ed8f3. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/USWB10002905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6fd1844aef2c724a9bdd6cd1d6db5c1e6feb6efea7ffd14e23fc771919836e. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/USWB10002913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405ff1b20f52f4328fac902a45781dcf05075d5e6055ac95791fe3d70eef1a45. 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/USWB10002915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b840035dda2a577cc8ca601bbc1c5c07dfedc19eaa7b598335b52a80a0aa9c. 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/USWB10002907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8132be38348b0681e762e4c023ea15ed6bfe736f97f2b8173218ad71068cd7da. 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/USWB10002909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4b77d3490ebb93269b9d6b2d0a4bc36cbf713a5c69d13f375b944a8e98b8bf. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/USWB10002911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5d376ed9d1b0bb4f8307b5cf4d8c11f91676dd16a31be339223fec8a92c445. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:34:51Z), 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/USWB10002916.