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 0x7c8adbcfe575a1f4aef9e1589f3dff720c546ba320fca2c7b9aa3f32f120813b. 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/cf3b61a1-db7d-4639-aa85-1e824ebac8ff.json and https://artists.proofprofile.net/proofs/artist/cf3b61a1-db7d-4639-aa85-1e824ebac8ff.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 0xa7082ccf3f413806eff7f2ec0aaee62cab23f1423ec3c492ae17609c19833e26. 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/DGA0M2402409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf3a353154903d24336a763d25a2ea4894b0136400273e8fb4c504b4b312c38. 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/DGA0M2402394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f73c4cda371e2cc9ade580eead8fd99806a551059b77b7e2033ea4073522cc7. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:25:02Z), 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/DGA0M2402417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc027f9215f7a48b65ab721157914e40a2c05498cfee7c822805950b017b8f166. 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/DGA0M2402964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6822fbbeaab90baceb0f0ef71e6f600f60666ddb7b6324a24f1c73ff66a0cdd8. 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/DGA0M2402963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51632c23b14c1040c584a7fa2dc05966ca4eb209c397c622553608874080149. 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/DGA0M2402388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dad2b42275025bed2e5dabe8d6d1cf9d4e5f1d01de9ce9ec8dce9ec3f1ac40a. 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/DGA0M2402962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa387afbbc7f91e4bc67fd5d5bad165bc6f5e16e45ce812ef277888455194c793. 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/DGA0M2402443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc31a2c7e7548628b391b9cfeee6b3989a826035bc36396880e418d0a8435bf. 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/DGA0M2402447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f942131f478894e5e1d264a8cbbcea50dfff5ac79ded220dbc624ff34f538a. 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/DGA0M2402965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ee65ad48e0fa319dce462c3caaa4855440cc3ac1b2847e2a63d89fee104486. 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/DGA0M2402446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11fa46f7ef4453a0792d304ed14a16ba4070c332dcadd91286c38b8f0369ea31. 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/DGA0M2411863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bed716eb21a4c71bb62c923ead472a4516f739314290598b00f93a5e76843da. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DGA0M2402449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f30cbe3c875b01d35ebed2ac653f36eeffaf495351d0c8c16e20a23d2068019. 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/DGA0M2402448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cf9f1e0de13a2239a7e249236a5d89905a47b07c5e35c535863bea7c8ae82f. 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/DGA0M2411734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa737e11942378cc16b828e1888538afe65eea1c95a3da0f691fddb75e0a601a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DGA0M2402411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a11bdce940c9fb79e805cdce6e7c3b1d39f8f2ba32100fd6a8fbfdf8cae7078. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DGA0M2402445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c8ad4f7af8c70aafbc53e223d5a0b16f02f316f78e7900b88292f3606cc529. 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/DGA0M2411773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0796addb388aa72a5e2f227eb4fec933e54b3c8c45d3610ba27d047d996eff2. 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/DGA0M2402444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f46c7106d8cb9d63ce898cec71d002fefaeb637038c7c708e759c769c5a0849. 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/DGA0M2415339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53432c9a824efc93708e552300b2dea7be6e9eccf092296f9d1a41a7837d91db. 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/QM4TW2475796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb123d6853230014b7ae9317de37de838cfe8a63a2627c4c38ce0c2227a64a2e. 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/QM4TW2475768.