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 0x24e78f7806f99b58f0011a3916f9ede36a532d15b43999227f9654aeb011732d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8aec56e6-a480-478f-9333-b81f89a3ff47.json and https://artists.proofprofile.net/proofs/artist/8aec56e6-a480-478f-9333-b81f89a3ff47.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 0x55a0dff19c2980207f4fa2853e06b9c71851fadfe111893326df3484c4f67f77. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/DEZN82419090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0ea8dc9cabddff01f00953a3e16dc92e4b7e49aa19b4827cd68d2ec1d4c6ce. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/DEZN82419115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94bcf66d6fc80b8a735efe58b1b712182e7421c1da597f750521903f4251131c. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/DEZN82419092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34f5f005e458519ec417f51556852e927d26414b91713cecadc8b9759487d4f. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:55:48Z), 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/DEZN82419106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69433dafc6f27d0b116cbdf8cce410c8218c17a4d2b12e3a4e44409c2f409a9. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/DEZN82419103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e05c2d49966a5d6178f3745432c720600520ea2a037699ac0a1cfcb6cb31f66. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/DEZN82419143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f5083f56ad683e504d30bf2bcf0d129ae157773594b174fec4a33ed28a815d. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/DEZN82419089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ab59c663fe0fd43f4404a5b36e67e7d4f6b35f11bfb83816be77b35625d84a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEZN82419114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb303cbc55071540ca7a111c0a8a87dac419a12af5ce63dc2df28503dc4a6abe3. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DEZN82419104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad179ec2f1b234b43b3245496bcd7a6fb82bd331c6347d9b99ac7a605214ad13. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEZN82419098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b57589c61b065dbca3009976fd58c3e08cbdc09174d8a4c5a5368c6705c64a. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DEZN82419140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac65119a59a993d96b55cb3fda2649301a62f6363a04c26ad98b7ece0a44c6d8. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/DEZN82419145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d2d61f0689a84e3514bf956043d9fa867c644f49d0ebcf115b0af9e815aea1. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/DEZN82419142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe621810be3c02c209d321dafe6b6f31155b70dc9c357580550350eec379dd9e3. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/DEZN82419107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e24fdd47eaf5f3f7429c30174b902d0fae6ad73f02d700eee81570b68f016a4. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/DEZN82419088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c6efb7f3508497413e315952d6fd90613bd369ea59942d37c38f23df708776. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/DEZN82419097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99106d7ce4de471fe3380a9b05d80d12855c81e9a3462bfa89aa4ed4efb8e46d. 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/DEZN82419085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf90ba34b727b54fcd4dab23dfaf832c0fee12d81dea0d525c7070dfb678836. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/DEZN82419105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa209eb6b1b63648096ce4165ba8e8d83c4581921a96d87dc9122d94722e53e57. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/DEZN82419141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86507adcd916323bcd2196e001b81723455a8b411de240f02f41ba623e31d966. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:11:11Z), 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/DEZN82419109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4933ce6467d5e30d0dc1faab39599b34a4ae87d2ba324ee015e1d0e94a923bf. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/DEZN82419101.