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 0x9335dd1f712a89f9d267c509970d8d9df685c41fc06679e25c3e2227294874d5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d12ef398-ce1c-422e-809b-9b71b2363484.json and https://artists.proofprofile.net/proofs/artist/d12ef398-ce1c-422e-809b-9b71b2363484.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 0x14f13570c351dd1b31291a5a8fc2e4147aee6d3403ffdfda64ffa909e42c2005. 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/QZK6Q2398514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10492bf1c165ed9ca6e5f9dbd6410b2c4e46d727109f3be8ab662198a548d1fe. 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/QZMEP2351421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f930a9208d9f6fdaf6ef78a4a3cec75b179d46976f015cf5b48615dbc8c2cc. 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/QZMEP2351422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e0873e6e7970b603a51a595b572e9477e6e13f49682fd2a7afa50a610e27b3. 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/QZHN52166196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7abda9dd15693c9dd3afb035ef8a8ce4a4e8bf0370a95bb46f40069e0904f6. 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/QZHN52166197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d03f381863b5002fd42e6c8b2e1c7d191d4c8550d6520938d1af6fb4946e3c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZHN52166200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c47f99209ca79d828ebcf85a55b574e2471300016b0baec42474c906c1a2264. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZHN52166201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee304ccf89f1fbb151c8a2dd88e191caaf5d3b96dca0da646f869caf6e4cf2c5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZHN52166203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1725afa75a4a961fd261bd9cea8bfe79cd72b27b120d9bf6b665579833025398. 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/QZHN52166212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49171ce9b0add14313aedddadb4973aa12f8208013d5240a3ecafa10a65abc4c. 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/QZHN52166213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e1fb874ff23e70707233bfbc292321aca079620ad0c114e0053caf85823042. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZHN52166216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f13570c351dd1b31291a5a8fc2e4147aee6d3403ffdfda64ffa909e42c2005. 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/QZK6Q2398514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62af0fc6911c7315b241c3092153816a789d304538435b50e0a62d3897ed189b. 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/QZFYY2270492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73422ecd12882512271e54a2733b7a60d76349c3b7617a76fa9ee1f2ec904ec. 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/QZAPG1803790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ded0641a74d2279d942d0167c0d7dfd7b58db0d44daca6b1554489fc219a47. 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/UST8K1750151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58d33eb2d6f5b54b62abae89ccb6f383ffb49c10b7696251f00ac8c625f944f. 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/UST8K1750152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336e5d934d92d8f5253b2b72f63e80b48ae55050ef3d1a9bf248e9392417bb42. 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/QZWFP2315042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27db1536141ab27a7186074c17bdb39d3881cb0a2e59399a5d2ff2f1e3b0855b. 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/QZZ7S2411531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f587fcf4b273178ecc5474d97ab420dd85e38f4ce7cb2c8efaad1071f8038d. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/QZZ7S2411533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c46e0999524fa29ec24de2fd2455baabafa2c7e9438a9dcebdfd9585076be5. 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/QZZ7S2411536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8636146f2e8c99e63946586aead7930fb9a2f0409a4cdb340605fed9bd66da5. 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/QZNWS2423387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642081e3220207f17199c32a8e3b0e2a76e349b42cd599d3d7b6eca6a53c9775. 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/QZNWY2404493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6684f507c86b98e1d5e43b7a518acadc59cb3b18781c52e792f316bf04a38089. 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/QZNWY2404494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d6c99d9ccd3bc46130046f99f0dbbacd32303953a11fc0916b4ac02e0a964ed. 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/QZNWY2404495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00754c98b2e00c53933f774a54a42ce06a58fe61b32edfee9dfd1f857eb5a339. 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/QZNWY2404496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2aea9b2ec03ad3ca1134c7acf9aad02c84e7fb41a354093cba1917110de7268. 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/QZNWY2404497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa326f6bf0ead9a3111d74b7bc7da44595039d7ba67cd09037f2bb0bfc153d9. 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/QZK6M2493219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8255c094bb2b89cb0fb78a92571fd103eea5686cb1c2ae860a3f208fab13adf0. 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/QZNWY2404498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe416f564576bb9d0fd9dff1e6b8d7deb54892bd8db67bd485f7f2a2c4647a640. 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/QZNWY2404499.