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 0x043542bcb9529544a17e2e6d25310244ceffe06ea138a38d103756a9c68b9ed5. 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/a94c1af3-52eb-49af-8b26-031e9f4c1a19.json and https://artists.proofprofile.net/proofs/artist/a94c1af3-52eb-49af-8b26-031e9f4c1a19.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 0x7ebb1b04aad876297cd9acf2e3f3498053b264198e88289ce464ee8ca3d3aba7. 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/TCJPG1886667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbc82724741b05fbaf0acd2b7d2b4a24e797206f843a804b01b0e6a96171ede. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/TCJPG1886669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc7a334d5729c3bd76b57d14cb529b271050fbcaada40d84d6f26e0283b1250. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/TCJPG1886671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab7527dda0c4af72553671ebd981e09176f2cf428f84177e21c16a91f66e4d1. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/TCJPG1886675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3436a0f39e7f2eec17d396a80256c0feb73fbec06451c2e97fdab78c6f811e4c. 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/QM42K1872521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c2cbdd1bd96dc99b7c10f81da0f3eacaf6e6e907ba9889a8e161b3d7198365. 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/QM42K1839706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a4b75532a7f821212d110591fcd34a474f74781b2ebe86c0c5b0146117458f. 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/QM42K1868190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05eb18ef6920d6ecbee639bb3766aa763ab82b300e888f9440b742c507dcd80c. 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/QM42K1847882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfc8496efcfd8130074b9b1f5fd843b9478d8d0fb9f587f42f524eaabfb8be3. 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/QM42K1810460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe923b717f0eb3ada5dd8aa8b8410c98ac8874c6873096b786312f7b58542c7. 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/QM42K1857965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf040bf7db6f082c3faa86d57578f650a55423d0c61e351da05de3085aa685935. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/TCJPI1958340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179400c5f9038bd4600c943672358fe31e2fec9788e982163acf0ee42738aa7e. 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/QM8DG1913461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3436a0f39e7f2eec17d396a80256c0feb73fbec06451c2e97fdab78c6f811e4c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QM42K1872521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c2cbdd1bd96dc99b7c10f81da0f3eacaf6e6e907ba9889a8e161b3d7198365. 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/QM42K1839706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfc8496efcfd8130074b9b1f5fd843b9478d8d0fb9f587f42f524eaabfb8be3. 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/QM42K1810460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179400c5f9038bd4600c943672358fe31e2fec9788e982163acf0ee42738aa7e. 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/QM8DG1913461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc063868cc7bcd1fc7984a773f425661b5615d08388500799d331c05decf8eca2. 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/QZH5E1945428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8d288b566521940362970bbd77ea85b2d719f2e798d93a23ac7f4e84216fd1. 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/QZHPJ1910736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7d994406a3d00c874aec54a68e6c2644ae7555e2606d6b18de8983bf7103d8. 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/QZFP52140002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938bed983d9132c9b10d93549f36ee253b601ed9fd48937dedd63535b5f5bd3b. 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/QZHZD1939920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf0782bc569dd93a0260a5c7b03c35ada26e50fc670d6136aa6aaf49b835823. 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/QZFP52139969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc063868cc7bcd1fc7984a773f425661b5615d08388500799d331c05decf8eca2. 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/QZH5E1945428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c8dfa493abd8fda30f3dc4be60e5911be3860b35eae438a43106285a135770. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZTH82106844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c8dfa493abd8fda30f3dc4be60e5911be3860b35eae438a43106285a135770. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QZTH82106844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f41505ad2b20639897aa2dfb96c6d588cd83a4cf8f415c4a542d78abf4e8878. 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/TCJPV2395894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f41505ad2b20639897aa2dfb96c6d588cd83a4cf8f415c4a542d78abf4e8878. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCJPV2395894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e389f41f335d2babc1dd338032dd4d982db5ea6aa07d723b5e033b445c0d40. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/GBSMU8487652.
You And Me [Joysic, WildHearts & Zexnum Remix[
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b79d835f7f1173d37ddc6e89210109e9ff844b6edd32898f0f592de348f0f4. 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/GBSMU8487653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa037c945afceb104e00300add0f9b6e839e4f3517240e2dc81c9ca9fa5d577. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/GBSMU8487654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb899bdce510082a7dbc6261f3d88f3bcb48cefdb4ece264317d8d8ad3b61d8. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/GBSMU8487655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0665f5be1550bdfd464e34a5aaabcde9ac93471edac31fdad78776fb9509cef7. 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/GBSMU8487656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c48ec406e47de726bc1ae8c751cc7d0903ffa140d1e8387bfecbe28a3df2f5b. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/GBSMU8487657.