1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x4045cdc467e1e2bed87869287a32bbab8cbdc47c7c09aac5da74aee954a7381b. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5b6165d9-cbd0-4ab1-82ab-b933e1918da7.json and https://artists.proofprofile.net/proofs/artist/5b6165d9-cbd0-4ab1-82ab-b933e1918da7.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 → block OTSBitcoinBlock must exist at that height 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 0x1ac732b2478d098d688a922e5b1e35cb366ab16cc09c7a397948b81e66817ccc. 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/QZTB92276960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c91707fa777feffa222daa25252a41e3cd94603018ddeef54733b8965534493. 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/QZTB92276961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b20a7f6d8ce62ddbda1edb5e20d0e76e08d15a3ceb79013cdf2ebd19dbe7831. 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/QZTB92276962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54856540f73c136423d6034d6e74814eb0a2fb1bdaf40f8793e77304be72412f. 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/QZTB92276967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01726a064d41e545a4046ac25534b831b66a95d41cf2163753921acb206dd1b5. 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/QZTB92276968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36af3761d2fc54a4a24eddf750aa95997aa6af48a5e9f1e81759fa1d3e5bce5b. 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/QZTB92276969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9ad00216aebd74d2d6a0809ff8c910cd56d0a285852ce2e566724b00e1daae. 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/QZTB92276970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a4e5af84d823f76209b84189fdf9036ae8425597a8c3575b4587d4e3496638. 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/QZTB92276972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd8454161095991bba9bdccf174d6e383c5cf623581676a81cedd41fa989bc2. 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/QZHN92297356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924450763dc41407451043a947ee12e9c6c63c3d36eb68ab553995b165419c91. 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/QZES72274013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec61d5b35eda6439c10b55a2bd699c47dfebaefdb87f2852ba03313bbc5d3e86. 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/QZES72274014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2978777bf4e6c2a588f564f75c47ed965f8d570a92053e9fb7ddec61f86f7aa1. 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/GX8LD2425834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285a59d3805d5a2c4b27f1be31cb9e3a3486bdc21e0c99fa4fcefd4323c500fd. 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/GX8LD2490199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f642c6a73a98639166fd9d165f7c8aa06e35c1ef39d39ac4e88207e983348e. 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/GX8LD2445316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90530e95ce8e58792a8dcf406afb21e63e0bd9be464d8e8249425a6ca8d2ce79. 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/GX8LD2463826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44c5330657547a62c0bd9f1583a7b8e70f6e0422f5f535d279b1f5974b3e405. 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/GX8LD2444263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa315ac9737a9bf995f27f2a8a0f13db659a25a1b4c403e1cf60e8cfbc005492a. 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/GX8LD2442365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c58951db970da147534c61ce9edca46f2fa1978d1262f5deac13e226daabfc. 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/GX8LD2462960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164d2ef29dc08d22837d51e76931e7186a6a814c82af2bcff090e823459ea3d1. 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/GX3HH2425378.