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 0xd456a1efc9957275b32c5df0c933a11e9e8c092bf90a8bb451ae6fbcd6bf70e1. 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/681e5c08-cf52-410b-81d8-75d232e0feeb.json and https://artists.proofprofile.net/proofs/artist/681e5c08-cf52-410b-81d8-75d232e0feeb.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 0x8128e9f0b3ec31218170dc0d793d96045cf6402f38e7a425015213a002c70da5. 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/QZQAY2335724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4b89d5368ffaba54e576f33ba7ee4b708152fb6b5fb38ea74945f203dafb88. 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/HKE022234791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3649933a994a7eea4148ff44079868ff9e6514af6961911bc882c045f5feb686. 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/HKE022234792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c475fa7a6400064ec49a2607d7cc4a61ec56dd295be8e996b34c802dbb3f37. 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/HKE022234793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262d1f06b58d231a208d14c38995614ad9cd9e5d25ba06abcf2ce0389e128e09. 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/HKE022234794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31dbb8835cb82198b5dfab2d46b66fa3dbbed3df1cb2b8b54da8b19432cd71ee. 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/HKE022234795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425c674ddc3106b14a07dad6f32dfeeb0e83dcf181776495cee49e745e10e7b4. 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/HKE022234796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ac89ec8f4fac475c53d3c85b45c7de939900557532a703d4b36929066894e3. 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/HKE022234797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6058bd5f00cf8625dd4d67d608e01c94a33d0d7559f538526c68028a050cb3ba. 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/HKE022234798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda12eb72c28044f31d23b91ccfc0fb8d894e8fd14eabed8671a415a4e18f4453. 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/HKE022234799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130d2ee9484c148ad0af48a8bc45e5c7c37d5efc4d8736e3d22062745ad9b74b. 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/HKE022234800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9139214174eb81a798286fbdda4d71d8d74d62030dec32a0bcadfcd5f59c77. 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/HKE022234801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34c251d1bbe7c2db73cc4abd15ebfc6c0a5cd6fded8a42b29d82ac3311abf97. 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/HKE022234802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde18a14c569feef00af334e3ca7ec9e0a78591d38515934840e21e0072fe9b24. 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/HKE022234803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477ea70dee060713931b4b91289e7980ed8a62164d880698ab35a7b981333054. 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/HKE022234804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8148793561e1e8f6b193930aef0893b3f95f11078c4f725833ca324c5e7889a4. 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/QZZ972331336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5a73164b6ba44b731c6a4542de323683e34f8ddd51d237262445acb904cb03. 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/HKG732270805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabfd49fc3ab8d403a6f10ca522d11d487ee29ab3c85d08954b43b9a33979c148. 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/HKG732142841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4121151c911ad0f9940b05f0f2ac7707e2fa5300060f02a5908b4b0df769de37. 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/QZZ972321337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72634ca5bc18888702fe1d06b03ec207d882f5197839f1d04d69e6f3e2d00085. 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/FRX282004549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f468c1740819871b89f7a95bf98310aec47155a3f1f5266f69079a59c9778ed. 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/QZZ972331338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb9f8ca427f3bbcb688d5879fecb88c1c2dce9c32f0d806ef1da5d62ec238f1. 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/HKC371702712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab9b402e3cef8c6b6f868a378f1269fc421c9c1370b6af8579ba491dbbee36d. 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/HKC371702453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf678cf34a74445ec922973cb954bb631760eeda9605d73a9eef3e41f6d4402. 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/HKG732432386.