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 0x5b7a6ec8a2a888805eb20bcb16655b7a02b9bf5f38e567f5ec176ba39c9675fd. 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/dbe53d15-c837-426b-a059-0f7f6d16ba2e.json and https://artists.proofprofile.net/proofs/artist/dbe53d15-c837-426b-a059-0f7f6d16ba2e.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 0x282187b73d52bcf26d9af6a7179df020d5d84ab789e014d1f0c99039c395fa97. 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/NLRD52119553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1faf56b35b6ba2dde4426e2e094180a03700d6b30feae7b56b797904bbae3932. 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/NLRD52416802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe053b2c1d238ae1ba7a74b495c2c1b7c79983daa57f3869d70b882d835e0e44a. 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/DEPI82454408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd7f4354ac0868f86e519cfbe2efdeb72353b50bda62230dcba8cd158f74488. 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/CBEYJ2455462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c974edf3338d32aae629151fc36c7480ee3d746d9b0ddf5c6c10676b650ef6. 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/DEPI82451785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7aca20a5aaae19db4a8d38e9ea4016de209c744870e1ebf659e7dcaeac44fda. 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/NLRD52119616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222d4616335176b32077e8d900e30694d24523ba624ac5b9b6b82b85271724aa. 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/NLRD52119601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639b60c2c77065b1ea508057876a246105600444abb1d8c7fac087ee710288f8. 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/NLRD52119682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054cd20eb40b3e95fd3e1f0389199ec6210433fda0344f276dc27826164aba87. 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/CAHQJ2291152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae60a59e2b006feeac4c2a5d09e1ff509fd20390d3fbea26d4a0ea2923282638. 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/NLRD52119515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f77cfa3e55a0463e63e74338422e7d3cefaadd0b9783d1c7892a46fa018cd2. 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/NLRD52119506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb711046d04b206c1854dfbab365e8166aaaac6675533bc59314923d41edff3. 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/QZDA82253796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8e2db88e359c36e488cb162bb14872a35cbb8cd4e2be952cd4f5754c7222cf. 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/QM8DG2206862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261c2fe81ce97b177bd89a9c806e998c59d2034f067dd19564934f020e5e4fd3. 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/QZFYX2250418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4202b358aadbcaa29c0bae2b27742b8d31a52823810cef5e3decd70171d3b35e. 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/QZNXE2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b16f39d79face51195a69b8a285b6c8d4bbc329c2ba5e77a46aeffcad9a118. 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/CH7812187746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c14bc688f21027231a962e067ee1a3b3e82e09c7fb9097d0a9f0c5708eb29d. 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/AUGC21900392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aae88ba311921c3d850dfbb7e1893af47b00222bf0d25d6c66110d597cb0faf. 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/AUNV01900110.