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 0xe6c6e9a464cc7fa57d855bb4e0f2119e5e8f59e8c5d4803ca48b16002b4691de. 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/cb667ef3-475d-4c95-88c0-1fda590a404b.json and https://artists.proofprofile.net/proofs/artist/cb667ef3-475d-4c95-88c0-1fda590a404b.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 0x81d219a43097f493a9ed86dbad854bce12ee3f10d928f6e90251cf410d59e957. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:35:04Z), 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/FR10S1875962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa19cfd90f2c9ee47bf8a1109ffef2e9a6dc5619ec9431b7d215fe094a4d7919. 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/FR10S1875968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58b2e1b59dbc5fc2f34a9d934e719b774da32cb7473cdb6df66fb4ed4a97605. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:50:28Z), 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/FR59R1721469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f64843f07f30b1421d412014e7ada96b39634e9d8885beac5b84ae87acd438. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:38:50Z), 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/FR59R1721470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcfb82c6fb1b3127eb9dc3cd00b5c3b9a73d1e8e8b8ec4ac49cb29796eff02ad. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR59R1721462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b03cd82a6ff11c997828681d237f9d1683c795dcb1c545ee0f1b56e44a4b33. 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/FR59R1742700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962a15dafda357976ba3a633ca46cd1f69f5e643cbe447ec501c6dff7dcebdf6. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/FR59R1742702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b30e54f0210c708afaffd80fe21af95ac8be9016709328d07f8bcccb850b161. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:33:56Z), 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/FR59R1742703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf851dadf44c996c52abbe5e7b7968781d93997cabd11ed59b896e4c5164c29d5. 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/FRX201602797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4959393cd6974cec54a13cba0e1d2437e654006c14b51ee6db76a45110b0de9b. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/FR59R1722112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa469ca72b489232c02d1a966cf52e9b4002312c82597d29f277c692a01a2a6d2. 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/FR59R1722115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3fc869905bc534093b50e3e8f825e27e159da49846c8acf4bcab7edeaf6dac0. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/FR2X41544411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b6dd4aaaad73664e53f7d0ee82628186f6284dc9dbbe1b20d18aa565d6bc54. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:13:05Z), 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/FR2X41544815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc871112ea0dbf9da4cfc6126d2647476f29a21afc6e03c98b8b0dadb1610db62. 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/FR10S1609756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c1a0e636e9b1d84f0b5ab893f1cdd9276fd0e7e363a5c7eefdfd025b243a9b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FR10S1609759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8b0b36cf90f49d641be0e335a33b82e6b308147de5fc5cf8553cd6d67ab4ca. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:36:26Z), 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/FR10S1609705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3479a9bdb8002620f70b9926d1b1436bfd5356760e295fb072e6558ce1ae15d1. 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/FR10S1609733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a46a1efb33d0f6b2a20a78e15c742a9df7e6d0deac5f2298322e1055e755db. 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/FR10S1609747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5eaa8c443f6de5fc9e19504337aa837ac25b8e2b21ef41402084127837f440. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/MAA172001390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a4f8059a44ad9f2adb958509867dc8ac6cba5fad80d95e949f764e7b956ccf. 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/MAA172100906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8660cc5973f86b8fde640cfe3a177d15ee68c8551786d3a25ae14e2ca7974a57. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/TCAGE2201684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9bb8a4e8b71be37cfbca4d6f20b1b1c88b4ffc0cbb60e675d538678b13149b. 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/FRX202273011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8323d2807b4257a99036fd2dc933f435c0ac5f9ab200439490f696babc39e9b. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/MAA172200500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbaf8cb2360fc4568a8be5dab98278edb0a9dd6e125734c034a1eef43833d1cb. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TCAIA2402001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a87a22bd7df9a5d551de67bdf7cba5ffa1df72f486512035b106b3e0f5035d6. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/MAA172300391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0b65d4e280c2fbd61a0dc7e04c801867e2950180e3ab6cb58a991cb4860122. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/QMFME2433453.