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 0xaa38f6fe455eb761213eb8acdbd192a549b3dfbb3812ad821bd4c4758a530d65. 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/3446c088-a63d-4a2c-a1c2-db25aab08f39.json and https://artists.proofprofile.net/proofs/artist/3446c088-a63d-4a2c-a1c2-db25aab08f39.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 0x1aef7d9c5a09bedc2955681b4eb518a8bf0a7952affb98812814116d8d666f0c. 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/BX8WE2200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe931731f34b20bb985f84a347e7a5b868ff4f7f538bfe228734d6fb52c7f38. 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/BX8WE2200041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7772988cdcb652955de8c94b367bf4513c32a1d29f52d1e1a042c5dcb7878f9. 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/BX8WE2200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff2a3f0ad7f91e91d07f4e2118942930af91541a8e807fdf70d99122617987a. 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/BX8WE2200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf96b97e0e8e42f7546fcb899c0ac7d7b2678b02b6df0a0970ae8cd9de5d95b. 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/BX8WE2200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9bfb45f5a59807c5932dcb6d5f936a5624b8f0dcd45a8e85b82c0f3ace38fd. 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/BX8WE2200045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38957bb42af12dd89eb774609edf38c14bae052404b036b4ff7a530f77829c83. 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/BX8WE2200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c4f554b903654b907599dfc1f41da03f1e724155c99169a2fc508ceae93615. 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/BX8WE2200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7484db2c5ebcfb118d96678791ec082d2ee613629d9d6b73a314fc9e36ef6306. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BX8WE2200052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b8894cf8c0b975965b764f46da1ccc43eec723b3da006ba999ebccfaf86b14. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BX8WE2200054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12e4a0573b7b840c69635ec792c2471670c3a6862dfaeb108d826f18bbab0b9. 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/BKBPP2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0830bb9a2ec9ceb6c58fdf69c59fe62b66109a66129906bdcdbfe33aa746cf68. 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/BKBPP2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd89050a4f7cfe59fa34e08f9cbd05f2c7667241b0c89d3536e79cfb136c01be. 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/BKBPP2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa529e6bbb652a1c8bdb240220086eaf2e1ea64035b5308dca27844f6ff908f63. 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/BKBHA2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7785db6d90514ec10b1207de5dfffb030fa1ea232aeac761156f2ca35bef078f. 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/BKBPP2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bac2e2686d43cf8e8cca2d7681b86ca867f00743cde42a7b2765bbe1b451d82. 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/BKBPP2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bac2e2686d43cf8e8cca2d7681b86ca867f00743cde42a7b2765bbe1b451d82. 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/BKBPP2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41bed0e3927dc6305c060b6ce839152a9651f7d4091af91edba7a044d43d066. 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/BKG8P2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b873786bd03e2758c89925e8840d968bb102a57379f39feca3431a2aabf3d81. 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/BKBPP2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4e771932b046309708db1d0958a5f32e97a845680bc5470b1e0a894ab4863c. 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/BX8WE2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7772988cdcb652955de8c94b367bf4513c32a1d29f52d1e1a042c5dcb7878f9. 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/BX8WE2200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aef7d9c5a09bedc2955681b4eb518a8bf0a7952affb98812814116d8d666f0c. 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/BX8WE2200040.