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 0x215e36b224a9422342b94520dd88c3f0edf1d3d3fa7a4b1a016e42801951b3ba. 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/fbc844c7-1969-4f0d-9977-37077041299b.json and https://artists.proofprofile.net/proofs/artist/fbc844c7-1969-4f0d-9977-37077041299b.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 0x0124be9c0cdf978d341a438ad3332ba28fd0e184017e50874b9a076715051a7b. 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/QZPJ32112970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06665780103390ab44b27dbaedfe67ce3f1d308f2b2a8da4ea27c3139df02e25. 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/QZGWX2246327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d11a7cc0f91223f547311c1b9a4401536a18636de815e2de6fb1e79318566e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZGWX2035438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0a53f02a7e2d49edcee0f7118c4c9226f6e333f7106e45bf3715feafef0e27. 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/QZGWW2109821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94dcb6818c061c28799a94ca97db98df5287a841256ab1b8784020fde8571be. 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/QZGWW1993307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b4a697ec11ecd211a50dc2ab0592151739adee2259c429e09ab0ae1e603ee6. 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/QZ22B1962541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f23bee1f014e9bb0ea76b6b2fdf7a0665186a1b1d5e762a33d9ab89e49e46c. 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/QZ22B2092768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d29f4ae5f879dc9a5019ffa59a36107231e6bfc74f00ee04c0ef3a276f1303. 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/QZ22B2092769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x341518b3492411f064ac57dc4b576d6ab389bf66cdcf3816000361219ad3155a. 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/QZ22B1995252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2070e90981304e2e3b90099aeda08250024668d99be728b6952902b7f691d77b. 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/QZPJ32190765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94be73d64338ecc56115175f1f9c28775f6c7ea5f9a565575723df2e8e7501ef. 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/QZPJ32264102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54196aab89ee172d00c9ada973abb51c77e7adf2b19ec2deab4d746fa5297a6. 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/QZPJ32264103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480492f0690df5b835b86d18ecc65f879ba3e612d071b33760b25724dfb39449. 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/QZPJ32264104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64dd705b986e2911ce48a8a6c4aef104ff5121beb34c084461f95cfa8e7486a5. 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/QZPJ32264105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdde722fd24663690a0026be33e5eb891731f691a3c395818e25442077dbb75d. 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/QZPJ32226368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe814c0db3373df5ae007a63b54ffe24a2cbe3d56484e79497441867e0420e8db. 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/QZPJ32264106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf66e4444974c96f66b4991fc950e23acce47920882bf92b2e90280da931e41d. 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/QZPJ32264107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0615aabb01ccf5519b4ee8b8dba32279f67439ecf4c17b3a11aeeaf1c92a034. 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/QZ22B2045590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdde722fd24663690a0026be33e5eb891731f691a3c395818e25442077dbb75d. 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/QZPJ32226368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d12ab5d2b05712b3abef0db51096db035be54f5960817067a373e40bf978982. 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/QZPJ32226369.