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 0x20d132bbfc55f42317ed7abe68fd38738712517fded3ec4ec01c917131c39e8e. Chain 2 (Bitcoin): anchored in block 953867 (2026-06-16T01:09:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/05b8dcef-b4dd-446c-b0ad-a41848692902.json and https://artists.proofprofile.net/proofs/artist/05b8dcef-b4dd-446c-b0ad-a41848692902.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 0xb378d5443392310100c2ae6b07f71d05364a20097e179e6550e3e3a792c241b6. 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/HKG732126886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b54cb831357981733543940608a177d79b916d76aba45e35c2d3fb4adce5503. 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/HKG732126887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca329d35ee39712750004fb91565a412139bbf8e628383a9b34f5b8f0e58d43. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/HKG732126891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa052b889d8281625c6df41b352acdd860ccd34b6ae853df26e325bcced251de2. 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/HKG732126892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e034d332c8a921d4a55218ecf617a712aa533e2e14e169ff161693cba04c5a. 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/HKG732126897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47290e67858c7af2a3125a7ca3bda97ca6ed0e8ee20140661c1748abf514ed6. 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/HKG732126902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc964c7a54910a680bdaed27d389e630efeb38038cd13a2aa2ba968a0df6d7ee2. 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/HKG732126904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ed7c6ba2c31974570191fbdb489f38eea085b0b42e250067d597b654a19d61. 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/HKG732141738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63522c57b4731a150b8f37d18251d3d772309629fcc5abcf568024c526a991bd. 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/HKG732141740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf077c72b7eff4bf1ac45eb6fc813f2d11e5a25af08306b0c7b405a1fa7dd9b49. 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/HKG732141741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa576a03149ecb70221e099613b3a18143e5209612209e59f3ea8df0be87762c7. 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/HKG732141742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633babbaac1e96453fc488a713e59a9dd9c09fa39ff2f490d2bf628247fe71d1. 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/HKG732141743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803d5ca5527df9f662bf47a5208fc5c5b36d2aba6ba234c1a6a2b6f243e6fbd5. 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/HKG732141744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7e807fb2d1fc394ec51533d07fbe2c9ee61c22e94df218995e9d4c1880334d. 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/HKG732141745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf59c9c1ccf3b5b596892c974329cadaca537506f96fcd5c29e513326a050b27. 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/HKG732141715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4079705b2fe5f3736e6f75662868ca769c379f776ff7a48dd5bbdb873151e2. 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/HKG732141716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e38bc588bb63b725ded71c6649e7b8155ad6c7705e1955d7df7c188c8b329df. 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/HKG732141717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ccb481aa41f7efaab4a1dd0c95abd6edd3cb67cc40acb7823301ccdfc17d9f. 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/HKG732141718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8044f69a412215c9d6b1ba874ab11fbdd3bd6fe7322ba17b804d60594ff816. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/HKG732141720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac4d877ef404a59ded4567544dae3fa13a1935d58b431efc25d8842a7031491. 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/HKG732141721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c0cc6af2eeb0c95e50c6aa5f0d0ef1c234e841b1ce421342066851087d0b7b. 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/HKG732141722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb454ddbd6eaf775fbb2590619eaf9fae6c832c7acdc0223a1724f9faa8c65e6e. 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/HKG732141723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1935ebe15bc1af77c50128bb1e564c3d8b50e28ef82a7d73c2372721ad9fb1de. 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/HKG732141727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2ca31a5b6589a3fbc672e76e16295af2c6321589d3705842e9a7cbc3e9c67f. 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/HKG732141728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a248caba8450d72df400c14788ed1068248c07933a05b3d43c30edeb4e590eb. 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/HKG732141700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa78ca67e66af976581cc4f5c21688abd90ddc311a97e51e13a631bb90bbcd228. 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/HKG732141704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ff1db40560c8912c81f21be2bb232a24a3b3befc284fe7316c2b2db8efec89. 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/HKG732141707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323726a3bb35b19fa2f576fa9f7d3b9c504045e8b0c73e785c554a757d35d424. 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/HKG732141712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ed7c6ba2c31974570191fbdb489f38eea085b0b42e250067d597b654a19d61. 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/HKG732141738.