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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45617893eeb6dc198aefceb3756bdcbe7c597d7b37a41b5bc7d275e883baac3. 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/fc1448db-a971-4661-8d7c-37660c305ad0.json and https://artists.proofprofile.net/proofs/artist/fc1448db-a971-4661-8d7c-37660c305ad0.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4076738d4f7e5246cdd3124cdf051732a99874011d5687a758e763f8893844bb. 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/QZHNC1943129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f7298286fa6a38ce6a496adc36e1211a0404e38a71af4268249371d36140e7. 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/US83Z2005579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdadc1bcac2c96e636988c185c046d4571f9d46e92cfb26a5ef8598b93aae6cb3. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:27:17Z), 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/QZMEP2032674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1ee11c5cf967dfad0f843cfd2ba79047f6657c6e33ec67c481249511a3c5dc. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZFYZ2145868.
Tribu Ancestral (Compiled by David Madrid)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1ee11c5cf967dfad0f843cfd2ba79047f6657c6e33ec67c481249511a3c5dc. Chain 2 (Bitcoin): anchored in block 958487 (2026-07-18T03:43:59Z), 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/QZFYZ2145868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f1ea1b782c262d851395cee3f8621948f2b3902a8901a57ac516f7c7e440a6. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:26:02Z), 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/QZDA42169799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29505aa88009fa9f26c5fc594ae1a1e053b11bb4811d0fcd76b05fc53de6781. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/QZFZ52118460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb89c29235a55bbcee73db67801a9a2805b92ab8f79f7ff3b6caa226dbecb26. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/US3DF2130007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae22cac8cd655f2b6db71fb692d604881a74b74ffe3990539c8a2c9601defd8. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QZFZ42246534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537c888bddb633cbf138641a24d855e634e41f500d47b146c4628d89474f37db. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QZNWT2230199.
Música de fondo para hablar mal de alguien
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf12389773ce81ba04d7bbd9a1dde428b17a20f81ebad52ce0fae14aaac94ccf. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTAS2250248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e764ac2645e8825c1319367437bd505b14fa17cb60e5a88941af2f7d1daea77. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USA2B2511452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09af4c0866a9f26d2488d1a1e67379c56de57c49180ccbb3798335cc2bcf7920. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZJRB2509405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59eede0aa4c2327648ca47f927edc8dbb0e1e88268a5296e87ad36a2a7de5b8e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZZ7Q2552853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd8aaf8a4b81b9ab6ad3a3c77c48a6e25e26330116327f3ce689de478c35ca0. 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/US83Z2557860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e7e028b1f7a9ac80fd3a86e8822af6b09e2f1fe8024a3f4bd1267813a62355b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US83Z2559465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27916a2bde976d63ee680b750c39f360977353748e868287bb299bb095355c5c. 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/US83Z2009462.