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 0xf9758e005759416e5ea40818e04184a46c6befe6fd13130bcf347da4c30ba69a. 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/d2a58508-2b74-461b-93f2-77f6290c2482.json and https://artists.proofprofile.net/proofs/artist/d2a58508-2b74-461b-93f2-77f6290c2482.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 0x65f3aa3e8927b9647ae6365e82f4bb553761c5f481f2d7fd0987aa4a63a7cd1f. 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/TCAHA2325945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ffb4d594b1ec49fa65d8fb525409a6d22d7e460482ebd18fb9071083f7f524. 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/TCAHA2325966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d9a06476f5bb6a40fd1912424ebed33b9b5e020e32d47ba42759d4bae250a6. 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/TCAHA2325984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec548bfb40b48624a34589e55ca609181cf0a1a9247247d0abe36b854d00187. 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/TCAHA2326006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04754f0bb08ddbb0ceabde14ffba2d58ca5caf12b92a6512d60768e2929a9b95. 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/TCAHA2326019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43953af269b02edcbdef6ad962639bbb5b1d4c81cbdd221a54ebf5d618d7bf2. 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/TCAHA2326057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd9429605dbc0f4e6c1b3a98335422109eb8b82da719966f57c92ed0b9b3533. 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/TCAHA2326065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5e4a9ef952523a25c555e24d5041662b7cbf1083234579e956322e6f0126cc. 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/TCADP1817583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb8c5259ab02679676d9b068f8d4f95d903c306b7f27a280fb5e03234aec999. 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/TCADP1817584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635c6fe71ded53c4a33b507bf64c4c2ee77bdc1cd42825b6f892469cd3d1491a. 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/TCADP1817586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56dcac40f1f62b6eb6154686e01db0dbed079bea51e989c2e36b411384567053. 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/TCADP1817588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4bda8d802c82adeaf64df404048fcb1572f08ac06d7daa0fca14bb0bf4dd3c. 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/TCADP1817592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee1228209056183101c2e767f7787ece1fa5e26b64f4831b7d385c361335c49. 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/TCADP1817594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4693ab8d940a137006f2cbf722ac3ab1ecc14d75bcc828f83e2d23296ac3d3ba. 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/TCADP1817595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d11cfedef72ffca5ef060394e605839f9ec353835eaf7452dde216f2504a5f. 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/TCACW1622483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7987e3a494247124274a1e79ab4a91d9efb659eb3b3ed2055c9acf97cbc4d0f. 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/TCACW1622484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f90449d9ca6be7d53c925c16da13a11dfbcf1e5592a68e7a7a0e2bdccdc4939. 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/TCACW1622485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422027764271c127c811e870d34479ae18b9438e93744171fa3584d25ee5b3d0. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/TCACW1622486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c8a252649c1524c986c03162f3f8c6c940d79f326bd03a594fbd9e5edc2a25. 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/TCACW1622487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5df8b488af7c984465a7685a277f9c47fca49835d2d01826b16e6c9ccfa6b1. 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/TCACW1622488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2bc4d94ac8fc1e849ffdb224443baa488bda107c214f7f6e5e53a6ba81b573. 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/TCACU1616047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846928790659f2888871f63adbc3a1a25b4f25a78549537323e1c536325d8050. 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/TCACU1616048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ff5d3724c472bb084dbf829ec768270e03887ab1fefa40df7074e673906cae. 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/TCACU1662891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90a0d90850bfaee05e5ca720e9c34b93ed9b01e3b6899745c9f4302425a7298. 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/TCADJ1711966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47aa93768cc3a27d3779e9dac758b3ae7d3c5b22dd1e1fa9e8baa07275b58fb5. 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/TCADJ1711967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea07f6c6f323f76584c6474f9ce22fc93ec6cb85b02375cbad78cf639d50e17. 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/TCADJ1711968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96dc4372bbafd599d0011c94e8fb61a55fc64255d9326f47ac5427423b8280f. 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/TCADJ1711969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa228a5ed85b87336f4237fe6e241dc0e1929f6babc3e5aa996889910257f8e2d. 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/TCADJ1711970.