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 0x1c2bed36c93484cd4e559a5743c23e27117ab9d2e0b648734d7c4dc68b6962bf. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/07aa2ad2-d1a9-4fec-bf29-6a26d5e6046d.json and https://artists.proofprofile.net/proofs/artist/07aa2ad2-d1a9-4fec-bf29-6a26d5e6046d.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 0x62f2490f953345bc2fdc6856f9795e728c31f7fba6f4acb27d3e3202fcea4b1c. 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/FR6V82408159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2e9a60030301ccbebca542aa7f5f012e6262dff2123f097efa1d2d904bd353. 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/FR6V82408160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c12c44cd953df9352992d1f2b957ed5870d611e5f28d8d3e1d1864b6fe312f. 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/FR6V82408161.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3984cea3b289ca11dd131bc04f6d6533d21dd4072d5fb8c4b7759d44b7bfe7. 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/FR6V82408162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x073d009d343424761b55faccd77b5161b3f3b02a719cb178291b0b1475b95c58. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR6V82408163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672f4bec1effe7f104c44a0005abfb5feed0f40fab8b94a0fcf1c61cba9124d7. 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/FR6V82408164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93e460b0a28d7e583fecf489269c8e7424f80db789b66e1cbdda65a28e021a7. 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/FR6V82408165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ebbd798200ebf60edd26dfc158a941ee21ef7fbf4f5da49741ab2660a3284f. 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/FR6V82408166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e292e88e865b81fcef3b5807b30a50f4e3160ec72ef81606eeb8817846ec9a2. 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/FR6V82408167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c88af3c0a7f7e7bef2c9a511148fc3a2a522feb907a14bd9f415dc58a7f5f65. 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/FR6V82408168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311dd86646c59b5d967a9135e10250c5bc5f1d90c77f22ab761c2a8704cbf422. 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/FR6V82408169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41452d05f7fad66bdb7fa647f20234746b3f18b03b5f5f1cd2961fd81a80e93d. 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/ITSXH2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22cfc422a288e9bdfd7ff9f99253da273762357654a1f00c7dd5f2ed087a8263. 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/ITZA81800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc36bb3e9c9ed65ff082eb35826f8a12e658fc0cca6fb7d31c59021795b7f23. 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/ITZA81800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f395e4492a34580c0abcf4d93fad101f7d48c7ec6cd35656dca91b6e33ef38a. 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/ITZA81800018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc7b5703200a10935335cb0d9ebe01492b715b9295994195a5b51b0b67fc327. 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/ITZA81800019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae3fb9c115692c8d738fa10246c4a71baaf5faf88906371154bebed2c18ddcd. 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/ITZA81800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f504253c8291e826d08262c7224b926172631c9f478cbd7f76eff61985c83b. 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/ITZA81800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd789699917dcaafc8d087c282cd656d3cb9027b934042e5b15e7e7fdac5b63d4. 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/ITZA81800022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707caead8adf50550deb2f38b6c768d23e5ac42fa1687bb594bb876a2862f28f. 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/ITZA81800023.