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 0xec983710a948eb33b5fc1dbb0c38a3a62bca9ee5d638dbb7d67dbe3bf7e9f71d. 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/0028109e-a024-48fb-9aee-41bd4361ecd3.json and https://artists.proofprofile.net/proofs/artist/0028109e-a024-48fb-9aee-41bd4361ecd3.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 0x24ababe1a549eccb76eafebcbfa1ca4751169ab04e33786918b0d6e3013a5f9f. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZNWV2474536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6946d5603f662505c62be33df910a0558e4f5e672249fb4966de317e06698894. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZTB42485337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b6ab9b2aade14df7fdbe3a12c1d6132bc3314446d64b0ce8cb99b12944fa29. 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/QZTB22453807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1ce3a55375d2fc0b3dfd84fff29e14112a2f95368ceebcc2b89ecc3db629b6. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZTB42428369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4fb2f0981fcf6fa33cba92c5a0a2ba22cbb7f54d9d910927527f31238765d5. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QZTB92469396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7ac55959f2c52512a9780696d57b8d9628f614acf2d3c7e70bb525300b8e4a. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZWFF2441712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x250b84e079bced1d2e9d40e964010b7902cfd0167a4210eda97d33acf35f6d3c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZWFT2460446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbada4211589a5df146a9b41a9c155b9020f5e4e94c124febaf7e1bcf0a0ae816. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZWFW2463718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e661a38fbb4367755a8ccbab8ab7dbe049391bbdab6c22e246fe187a73c18b. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/QZWFW2407433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318289f42b03eb3c37a20f680b7af00e41ead8defb59d8bc551c02ebee87037a. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZZ7L2477222.
Let's Go (we are going to Hï) - Afro House
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e10272d52f452c008e4c1cdb3fcf3e93f9d09a90529c034b5bc6591d7dc780. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZZ7U2418630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a142a24d78e3e49b444458d695369a381c446538da55d8b4f504db0ab4b82ff. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZFYY2551765.
Pegate (bailando ella te hipnotiza) - Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1022787021c7bc1e7852a28de66523eba3e6192df3fe5daaddfa8eae26f13a7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZHNB2576828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45a8fff7bc1f23bc7edbaee89f22b4c4608356e92080a14664d4fd8f1bf8de0. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QZTAU2596679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f554c4b6671487a4bdcbb5d1abaedd4f3e77f7f7f2b08d686c4730f4cb0f0e. 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/QZZ7M2502281.