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 0x20da85ad90378a6a8c2b837183dc07f52727b065eb162f63fdf72510e5b2f604. 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/09a62604-b992-4bc3-b5eb-c67705974029.json and https://artists.proofprofile.net/proofs/artist/09a62604-b992-4bc3-b5eb-c67705974029.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 0xb931f7950822f9465b57d24d79f18c72af2debc78a9f41449ff2542efafc3cda. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HKG291600891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e9a0e487b6de4b0ea2a59aa4a39fd7b1d1b36b2de1eddc2d47a0a4b7f6ef60. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HKG291600892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704bb2901b1598685fa23ac7267f670e263247e90bf939859f25d19c2b205d1a. 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/HKG291600893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94bf2f6f57d378e17ee0c769de753c09bfbf325f726bf169498d5c7aea7ddad1. 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/HKG291600894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x739f46f0afaa2cc20ff56a6b0aa95a49a60f710ce76a00d3cd6809c1541e2b10. 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/HKG291600895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce26b5b0caa850bcc06e4e804031f67a2c9f235a3f34f6219e005d513a2579f. 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/HKG291600896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf6ad9ec97151dc960c0c004c4f1bb81989e7c311711d5842e7f09e04f3f08d. 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/HKG291600897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096fa7976e4d48ebe13e04ad0f92bbffd5c53c612f97e3b1ac3c830c92e62a60. 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/HKG291600898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97a7974ce871c1f60fdc2f3c8753e44ea169657b829903eacf4f6ad3827582d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HKG291600899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8042b7f1d6355d686f612d5bc7922da585d15d7fe9f57053e826cd75e44603b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/HKG291600900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131aa219338126dc9939dd1d456b32d0a5fdefd604fc97b4eef52e2f9691466a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HKG291600901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aaf13c0358b7ae2899b70bcb26a8dd57a37fbadb96b8c44aa90b6012d7601f5. 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/HKG291600902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981a49f5b4d5238a9f766c7ba6eaac01a1bffc6cbc7c70781e619c509abba036. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/HKG290700058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7592ad2dae4ae9fc80d19443e82bcb231e6dfe2ad817eccfbb9098bc83694ef6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKG290700059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1cbd5d5231ce5b85ba3e3d43e1962e66ec5692a81e8394483b38a6a9f673e31. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HKG290700060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f3869ae095656e8f3d9aa52fc49552bdbf3f9dd26a46b4716593acbf9f8cd8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKG290700061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a7db4fd40e7cc9ed5cea332215939ee8ff68a297d9827c211f9809f7c4daca. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HKG290700062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc4db8e1f2be66aed29679a1383047832f0976084b0cefd681b7fd52f6000be. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HKG290700063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5c990bf672c80ef582282d39882f16e4f8d4eda6c0ae81c1aca4f58984acf2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKG290700064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd933ff233858114901c78fe81467927193c6a04783463fab0963701c60b22cbd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HKG290700065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee0f4a88d953c0c20e3d7646355e772e4e263cb9a08b5ca420b108ec408cab7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HKG290700066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdab8f17f8bb05babea7061058cf50022d0dfa6d37a06ab28bdad3d3e30dc24d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HKG290700067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f5e675164da288f097930d9db74293f9352a41dc21d5c2f040e12160418179. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HKG290700068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25167bb625b2669649d74a6e7da44b67bba31273e1cfcc2d9de8e56bce66b61. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HKG290700069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c2e2a5e39b5a20d2ce7b858e9ca4c802e4187db5038b82e79e7f847f4a35c1. 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/HKG290700070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2160585847864383a982256c855b20e131659fe40266f41780918b29afda17f7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HKG290700071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20318057d9398c8894f0421716ca4798bffff461483d9ced5954f72fb7c9ddc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HKG290700072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8857b691e845499588010bdce4c9cacd6b537d207c1ab436d517880be36c294. 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/HKG292300826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a02ea5c956606c7968a74c36ce4c25dd5d863a0f57f8a7c45ccabd096f4541. 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/HKG292100121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4675cbddac22926c5d71a9eaa4f9813916182c8ba8f0a67ef8559ec429772cf0. 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/HKG291900123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f1b2e600d76bbbfaaa6bb4b0e32cfd89165cab0918000810b47e4d8314d366. 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/HKG291800142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7aaa1acf41c6bd7fe9526fe31b80040c0f5e1c8c55b5b416c6343a60897720. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HKG291800057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aea82b42fd76d8d4d2c0e9c7e3233e4c6f1cbab1a27961b8a455e341fa3c395. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HKG291700203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44f2e8fb11e432a1b12371cb0a5406b239c786a222ed45e833154ce5dc59e29. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/HKG291700069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb931f7950822f9465b57d24d79f18c72af2debc78a9f41449ff2542efafc3cda. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HKG291600891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1accfc485ae97a24469fd7f77df090dfe903c7b1f5f6a862dc23e14c0d25d274. 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/USY252336167.