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 0x25cfa1f844eec829d7464c3db20decd9ab129fa123e0c5cb659064c31c95a919. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3cac25bc-214d-408a-a861-b77e0a4dbdc8.json and https://artists.proofprofile.net/proofs/artist/3cac25bc-214d-408a-a861-b77e0a4dbdc8.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 0xeadfc9a09c20c2fc13f4ee953ae90c9dce4f55ffbf14278ec7a478008db74371. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM42K1909780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeba2ecc511d1f93db5ad9d9cd147b55b36f0bfad7203781d8f8a5375e1e0c38. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QM42K1982401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b175d13179104c8e9d9f31163d20a9c414f1e8afd5c54799f71132b4e4a3a01. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM42K1851542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf04ec9cd9eb01a7049373466ac3823f990a33b077f595932a57dfb1bea723c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM42K1877479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7eea0ded14c0f35bee7356f08cda1d3467d565e528be82ceaa5ac5c6bd99c84. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZPLS2301048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6becdb0eff08c7348c4b7726fb5c4a282160c74060bb6951d02666c62a00e3e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZPLS2301050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfd6ae21330398a5afb668c0e1b4b988c8c2e917ded170106e657e32a80e903. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZPLS2301053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f76ab65ed4658258e39f1aeae189b586c98c3a4fd82be45e32c91fc7502d093. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZPLS2188824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5895b32adf8bb72e3c04d4d08e4232a142a102510d5bf36b0971c35ff7b17a16. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZPLS2188829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922d5227baa412c6c20817248049bbb206e172d042205d7ce9c5dd204f2595fc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZPLS2188830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c5555aeb3d2b6177a5bb737b5867da24fb0051ab804f86ddd16101de684205. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZNWT2107705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63d8870c28414cbaa4436838f1e65edb62d0d0083ad0ce8cd8c27666ef1eb5a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZPLS2188832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba8099c47a6cfa47a2ea845a0f1e4161e6fdefc2b49607e42eed66812aa852b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM42K2129956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacfe816af0eb769c7e26d6ce565e55410a26a2ab012dd9efd20beee58e8b8230. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZKDK2112283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b3c47cb51cfa922e7ade0cee4161afd94157891f8f5ee733e8a716e14f1e93. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZHN52388353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5547b323db4f02e27d93b5305f86d60ea11dd66c70aecd381dbf68a1b0af9c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHN72208595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c5555aeb3d2b6177a5bb737b5867da24fb0051ab804f86ddd16101de684205. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNWT2107705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793374581a9c3871b97ab1f5cf45d9eb427185385c99512941e08c4e3b2d913d. 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/QZMHM2093276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672fae790e77ccd1cc5166f243659ffe139f4798c399c6a38c026096480e302e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZKDK2099928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d78fc826352d24eca64e1eb5accf5f2ab0cca3507b3c6a1e8bb78914408f2bb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM42K1935594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e8ea4e18e5b4c007e5d4d0083af0b45be53f8d10499bf84ba049d58890d597. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QM42K1923176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b6bf04a348e2f0cb1326e98e5b269fddb04314faa889d50d59c4ca9df11281. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM42K1886479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662bce6f99bf6f10deddc05fdbc1878758149e2ed4e236f73219a1fc94f2132f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZFYX2091550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba28a91c3e3410054f775f5c56faac706f84f4ec408526619f3b7f95a24f3d87. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZTB22255211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8072027de0c568b0b97565e75a28823dd77d5633f6c16f3c9d3395c21ef693. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZTB22255212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2576e954a28c27af735b2089614b353c9434b1a64361722bb960572eb77184e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZTB22255213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe887b0dd52e1d2a26aad9bf095e8d71f0dc9ba8dce0087a8071214d6ec2e6a22. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZTAT2296783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbbca509b32a6eaae8eedb2ac749e4848b5aa7ea918118aa69d9c54b3a91516. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTB22255217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f141599c8558dd128460de6455613466c166879eefc314dff6b895c17a8504. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZTB22255218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1750ac7adaa582b195cecad17fcb72736b8bb08b94cc327bed92fb4538b8cdf. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTB22255220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496571afbe0710222d1629616dc646a8551573986d2c0b76820d7c43f78a6fd9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTB22255223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba360d64208dd318b313bd88e8566054dcc173fa45a9936a8ee75d5068ec4988. 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/QZTB22255224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a1e8faf6ff67c88e73aa79e2c2f9d1f272c689b2505b33f6032a0f599f8160. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZTB22255225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164d4c156b95bfde31018c89ab480492a06d151a818e340af23f5ce65627ef02. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTB52335398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a45010a146ba571f07ecf28506d8063fd3f72e8d5a66087f03c79a3b823bb3f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USLD91766060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f7c7d05511e63e9ed2702cc316d566cfa6eba36844cacace6bc3ea0c4ed1e1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZMEN2231034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9167d89bcae79c778ab64bfb0b46a2f7207e0779fb64ee0849d7fe956baf5f84. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZMEN2231035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4231092fa0567b894ded81351b5ecba53c47f636f8cdd32daf07137cb56f20f0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZMEN2231036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf74a4766718c47f14e6fb8a72e4260198e9e8e14dd6fec584a4d880be13d759. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZMEN2231038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f35c47986c7755bca1d5a1b06ad08f2f56df489e269995c233489b059f75887. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZMEN2231040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb413a76b19d85f30521fa81509e1bda9b1fb36bfc3de7b8644249c6e13eb8ea. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZMEN2231047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e30d322ccf2e6be35ff52a168b35c30fde8bf6be485f0b860888f4378fc7fec. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZFZ21930962.