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 0x7297637924880d9605a5bb2954b3e3ac45d37a30a593eeda123124f21f825853. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6b9624ff-4352-4611-b139-a4b5a158ed85.json and https://artists.proofprofile.net/proofs/artist/6b9624ff-4352-4611-b139-a4b5a158ed85.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 0xf170507f0752475b7e759252c773a222ae0706b37f788fef52005e91b7107281. 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/BK4DA2322045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8dd2f373fc1b720f227e012e10999c43265fd6dabb52c2f6234f74fda54391. 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/NL5HJ2300192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa82b8fc6912af5bd3cd8a257d1f0d1b264132d46563b5bfa54900a3f9618e2. 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/NL5HJ2400142.
Whatspapin (Remix) [feat. Kosso, Killer Kamal, Cedje & Lange Ritch]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006d60be9d7b013311bec20a9fc4f8aad3f00c07aa70e3389d55f91588233c37. 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/TCACU1656290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de64eec567880cc3d6a38d91c425f1d71bdadc33a3aadaa69fc28c8e7ede19e. 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/TCAGQ2235812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3576611692c56f493a05fd99b8510968c2b75682b6097f0e142094a7fe3c0ce. 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/TCADJ1767286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388444fc2a9591d59042fdac405e7f5fd6900e35f03a1df2d14f6724e03cde5c. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/TCACY1718904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ed4680d12f4dca56f19d0da2cb27b708d75fed4267bdd659a3cf396596ddf4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCADF1727676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de64eec567880cc3d6a38d91c425f1d71bdadc33a3aadaa69fc28c8e7ede19e. 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/TCAGQ2235812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8acff53a69da86afb1235d3dd58c7f9ae645e6224278bd9e8f534a047e71bb5. 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/DGA0M2368021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a239ef91b2c2e4ad1140cf7da087ed0fb72b9bbcecf930caae7b6c8d1e33ed. 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/NLX4L1800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2614942297cc9d4db34e55817d0363672e9c7ace87a13c21498aef4ac90d2a00. 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/TCADD1760546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5262eedc425c89f659614384fdaf56034cefd954f92fc2af3e53cd2f1873c7e5. 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/GBSMU4532576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3593e66990b0780ae1ad402108e5e470c595b95ed14713e860158f1b8e57eea3. 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/GBSMU4532578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b1b9d67e558c9674bf103f0f26cb5dc95e6d7958ccde65c3aaec8e724ae811. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBSMU4532581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09580863ac87e67f85f8ae2e8b408105f11da846e62765b971b60f99203e125. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBSMU4532582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644413e660d8d0164f9154baae7731f99b7c7bb2108be716b79f05d3ccb60c7e. 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/GBSMU4532583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66253bd7b0dde0dafaee37d65ac744a37ea0fd286597cd06d313f62c7e1b8a60. 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/GBSMU4532585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa419f55aa999a8d7c8d5d8a4ba946179b38d35a95dd00ee2c21f1220cb8e7bf8. 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/GBSMU4532586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2a99dc6db2ddc68d84c1de1c356583b9108d58e5c54e48af7c6010782ab3a1. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/GBSMU4532589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4780b9b394928319aaa74bd2fd7d57ac0a99a8f5de89135cf074368a39ed8afc. 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/SE5XG2501777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99d2460201eacb7a72fe878c6e97d1c96df6c786830e1fad7ae20d845772469. 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/ITC6Q2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe886e712049906f11ae1ee7888cf749d6977f55175df207e3eacdcaec260535c. 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/DECE72500269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba51c261845899d7d3daca8156db0f53194cb56ab93203389c896404900b52a1. 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/QZHNC2155807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47859b1e0aaec470740e5ccc6d4e05391cada473b89778b76540627504480dc5. 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/IT0R62500031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4459b0eaf7eba6324319efff908596c8d4d77f58fd4739506a85e8fd8c7930. 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/QZFZ22572686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923761d49a1b176c457b49d87da7a117fc3979a93d2e8b658ead5e4183a8c816. 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/QZTB22453729.