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 0xd16c4726a24e29a1769ef982a30f44fa1e3aa351983b91e5f95b178b8b8eacaa. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/96289370-af7a-401c-ac8e-bab36f834f70.json and https://artists.proofprofile.net/proofs/artist/96289370-af7a-401c-ac8e-bab36f834f70.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 0xe0088a792574c0bfc01708db58db37c7126edd8133270467f8c520426375e756. 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/QMGR32098308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3abbfbfd1b34f15d66621b8faaae990661d5d43ff46682b55813ce34d9e8b4. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:56:01Z), 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/QMGR32003908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7a7e416d81ba8534d44525bdfb0ab52053e14376e579dc9e9feacb10ffcccd. 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/QMGR32233953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f959086cb911835d81f96a13c50c04fa472fad4e84aaab32dd7e779cd3ce93c. 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/QMGR32233969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63162fc2396bee372bb43a57eb1b629c2e19c2b402e19e59bf1de2cdf93eefd9. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:55:11Z), 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/QMGR32242531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbd9e7e49846e0928c7814ef2d8960523b4483423525933d09355d66d18d272. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QMGR32242532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0260c612d01553ddd0eb89f308f8b9611832fbbf2c4df9c0b76eff6edaa6dc. 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/QMGR32257577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d91ab77d04992612be3a31bcd20c5e01e302232dbd29545242a6b52fc99b3b7. 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/QZQAY2182149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7644f39e33b53f314c9ac0c1caa64aafd4417edeeb857bd863448c9f05afbf. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QZQAY2110116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c297077484c1d33a05d2abd51e2a025275883f1d6ca0f0bf25d1a0085c25c1. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:01:47Z), 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/QZQAY2182896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276335c5343bed2a42a4da2662756f759e99a66a9e5b154dc6c89f73b721ea49. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/QZQAY2133225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf01b7ef7ebb53e5ab46ca429c6ddb7647872b082db6f3b83a8440746017ae0. 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/QZQAY2178571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ee82f00684b15362d4606469a1012ae92954c60db537ef0a1398524ad2aaef. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZQAY2177992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0247e9fd1cc801cfe0a30f5c0ea5ee16eb0f75d647b7514912c4f0f4f865c4ab. 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/QZQAY2128273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ff2543a7ef270d778667c08b916add1a5993fa3f0e5665d2c3fa55479b072d. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZQAY2186216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf848322e272f51bb1ff8aba52367d9670b259bc982cb5a924b0da3dea47903a6. 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/QZQAY2104028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dbbac52e87d7fe03ed66ce91e5f7e9fbd581ab713a021ab1c61a12e89439b5f. 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/QZQAY2162200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d5aa027440d03f9ed4e71571935e42fe4ff66dcac60b5891531bd051333a87. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:03:22Z), 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/QZS7J2138221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2751c046e6efc726338e78c870ceabcd360f1c763d9b76a11d3673e9bd9d85. 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/QZSYP2185204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27fd670fa4cb37d3acff98b85de5312155ceed019d5e49bd60cff2b370191aa. 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/QZSYP2134711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafdde39cb749d2ed25f4df85e9250bc82fa47b66cda6693dfe545a910f1c8f91. 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/QZSYP2172809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310410b0834fd903d4f13ffb5dd24b62ecedf5e769466d2ac0b8c01930bd2e92. 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/QZSYP2110470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be78de9310a5b421dee817bc38a6eaac4caf575a0d49db826cf1bfebfc179f6. 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/QZSYP2146171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d75d145a477f1a03c38fc582bf26afbd53e7a1af4145779fb4c48292b6812d9. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZSYP2157264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5ba1b98efa258c7309d6c44e03d1a8ef122e21379604388d50b38eca0c3fcc. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZSYP2182780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf69dbfd79a163d6f9c62622157c663a0c9f3d7f592e152af3ae4719ba70aa13. 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/QZQAY2232573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b4783efd936c11414e611006de7c4c81f6e7fef4ff35630b0f0f1ce0311563. 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/QZQAY2223145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409e64bda009ca074d6a04dc65fb1cc43ec54fb04fead5ca9f8fa1586d99dd0a. 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/QZQAY2229172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d5dc5452090d5b76cf6ac8936ad58685c6fd25698becea96db5ed1b866d8f0. 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/QZQAY2201765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc464584718e4904af090f4888e41dffeae0350d1e8f0496af7483666fa4a4383. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZTLA2480450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13c649e37bb71f47511a3d6947889d8494f953854058525ae3ab2101f3b4a37. 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/QZQAY2495526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9096b678bed661ce2c1acdf25b681b9ede94c6d1ca4d87147b705d726b5159. 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/QZQAY2483368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc464584718e4904af090f4888e41dffeae0350d1e8f0496af7483666fa4a4383. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZTLA2480450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8ea91255f2aad9e304a26033fc59fda1466342fec3d0349211d7399419a352. 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/QZZ4J2401186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd29a9768b9fd1ff7a086a05d0d22e02529a079171f160e3899cf1294481897a. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/TCAIZ2443433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e87c04d7d208b2c9a822e218cb300a8732ea35c997da797e4e1264be5a31e7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QT65X2546617.