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 0xa1fe3fe62abb542de0018c424f2fc2f22f70c00709238641003b7f397c19de86. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3970dba9-c08f-41bf-a5de-37b353ed4885.json and https://artists.proofprofile.net/proofs/artist/3970dba9-c08f-41bf-a5de-37b353ed4885.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 0x81260688f38c1417cd69275cb937f50102440fb1b7d346cc2eaa850ab17bc888. 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/US7VG2365848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1f7d39ea8b5839cd4af997a8af452b595e4f1f85eba370e3f8a10cd70efeb0. 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/QZ5AB2231553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28fa07418aa8375ca93ba49fc5c13675c4c81e78291d94517054cf6bbe0f9bb. 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/QZ22B2060979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee544a464f82befc17b5ea02c2857351c28897b57a0ca0ff2553182ec76256b. 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/QZ22B2060981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2577460208d72a5e710f83d30c97669c1732a5fa7254ec10d41e58771a4a793. 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/QZ22B2060982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03685effc582ee9cec138e9fd5a1a590a1bb3566443ab37d1a61145c8166d12. 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/QZ22B2060986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7abd87313e08d14cde7eda7d874896870ef3da1437f97b671d942f9a6f6ba23. 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/SE62M2108298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc359939d0da8a9f4d9fbfc8320198e00e39bd6ce4a3ef4b4df7d722c5958b574. 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/SE5752127834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723fe37da4029276609283c3ee9652fb478a1b13478df777804a72714013cb1f. 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/UKR6V2341466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651b4c28b7b5784b8d44ed1b3ed2cdebca039668ae149c6dad224258cf48643e. 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/QZ22B2058488.
Que Culpa Tiene Fatmagul (Tu No Tiene El Culo Aguado)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab48ebf863344c2fc6a901640660aa70f1a1992adf486d11c7933d06ca5a112d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZTAW2267491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013637e8d226c6a2fb01095ff5ee47fe5eec505328f68eb966ff9b5645901c68. 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/NLRD52018942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b344f25c7fe00048d48541455f595e97aba2338ea5e322e42bf9ecf71da0533. 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/QZFZ22265132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21097cb6e5b46cb602bb1b53839b159e0ea73cdc7a06432d60fba87afd902ecd. 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/QZWFX2432983.