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 0x7cd5f03bcf3e3363b21bd00e3eda5c87a58b3a03e90bfb89c5c2f8ef3ccedecd. 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/30a01b18-000f-47a1-8820-469e3233669a.json and https://artists.proofprofile.net/proofs/artist/30a01b18-000f-47a1-8820-469e3233669a.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 0xd35c6a63e99cbdb5beacfd532276d47cf7744a1d9750a2d54d508c9a76b4f0fd. 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/USYBL1301240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92086d66d6744dc8828a05e4ca071121e31766a6849dc7f862d825ae118e7ebf. 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/USYBL1301242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820e89ef09396d7a083093bf97a732cf80a71a795334310561cc4af6dfcf2793. 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/USYBL1300243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb902f1476c00834f187dbe67c1f2e4e334e77274f8763716ee60b0f12f29b74. 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/USYBL1300244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30475c550f0c983e1b35829c135da2162c1ea0658de2c72a7aebf951ea27db61. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/USYBL1300246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e4dc16df023f0349b1fa0f3cdd93a84a157cdffe1a9b2e495b0839f5f68cc0. 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/USYBL1300247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb26672860335b374c3cc798cb61b450a507d186844e9f0b27417ce31deee43. 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/USYBL1300249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eebdb575e86d11ff2f444d2ce9615719daca2151aa209fc8bf24192757b0a6e. 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/FR2X41630513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106c4e85faadc04fe190720f43e6c288021e839dcc5226860b3749f1ed94e444. 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/FR2X41630512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69008771b40b25074fb47d907508f57215d2714659c5da2d9fc8c1bb81262b6. 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/USZ4V1600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194cb0e24f4e04e786726130a43932f6748cf1700fab7e107b34f4f84447ed4c. 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/USZ4V1500187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83dfee95704cd84f38bade899f3bb6be7fef4628eb1b604abb69993d58f6e08f. 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/USZ4V1500189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0cc7da513896eae6390bb2fc2e2de4dcd131facea0c54a81dacf4139866c43. 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/USZ4V1500190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa667991e138f2b0cf0c27ea415ba026148c7af616194a53a79bf57a822bde3. 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/UK7H21500103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd030e9b640090f4cc2987b42df31461e45cc96abec33cb021d5fe915e82ae1. 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/UK7H21500105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56da4d244e886261eff506e7a3e91a4279598bea89d395a62eeace4d7e96f012. 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/USAT21600106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e25e76b58e6c44f4fc99e5fa17b8bb39232134537601d285145a9238a6914ba. 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/QMDA61589313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985c47e745ec1bf16add30edcba068cab23da38c5dcc0fc09bd4c0966db85b47. 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/USYBL1600373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3518ccec4eec5c79a0b263b0a26454b0702d9fe299cf5bf69ad51eab340e30ac. 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/USZ4V1600163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4ed94426680d59ee952c3e2048d52dfff03f4b5aacca4d673a2d1bfe3263fc. 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/USZ4V1600167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063ef094e5fbde71555923aaf2bd90e626ac5192e53bf8ee98b27eecf78f3a37. 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/USZ4V1600166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f1ab84fc036e14675c3ab0f8d1c114d808b6309acbf3aa1d3752b4a4788502. 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/USZ4V1600165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa757970b92fddd1cc09257d258eed72995f75dab6dc976bb8e1806ed7c690f70. 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/CA5KR1557423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8565ef3a92f1ece8c828450b3501b3e380fecf1bc23c96708a9cd2330b8490c4. 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/GBUM91300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432391c3033608d0ed119db8e8bdae10e1d9d9a55dcf41f4ddcecb934f4a21c5. 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/GBUM91300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024be2055fab0149695cece4edb215893fd6092d79281a10910d96c2194ea3ac. 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/USA2P1341612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f3f888f2c1f54a93893a186325570b1064c093d119caf6545303223f3af0a7. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T18:06:45Z), 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/USA2P1341613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fd105a96e5f72916ae656cab75d9fc4df23507a848666739201fef04aabca0. 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/USA2P1341614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aaf1fd659a3cdd95341378e9a657fd414f8d36002a88d82a489a70153490619. 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/USA2P1341615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ad1fac8b273a9751defc245a1b87a39932747e337ebc5f7d41fa3ea2452bf3. 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/USA2P1341616.
Black Magic - Jonah Kay & Dead The Noise Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5413736bc3a1d7414b78401c8ba9deaa4f48f461fcd414e109a792743757cd9f. 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/USA2P1341619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8a67c4e4f7178a31dda7c75e845d8e54cf35b77fc3bca6ca2eab81c7ddd6fb. 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/USZ4V1200089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db308abbe19e173b83fff86f541a5431972b0aa2514a3b97bc83ccde3256f6d. 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/USZ4V1200090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009faaba4610ba87ca9844a32cc1a3395c905ddf6db84e30cf5aafe1d2eae65d. 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/USZ4V1200091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdccbefe050351e7305c7235dfcfdc90a776e932b0f9065fdecb861d9f42a529e. 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/GBAHT1600442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8427340578a7f983439959afabc774af1e2ec45bd120d4f6b898638d611330. 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/USAT21401502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd503709a65fa5c672722928569e7ced081b571daa1e4d3b92cac07f570d992a3. 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/USZ4V1100112.
Knock You Down - Major Lazer vs. Jack Beats Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401a1d870f7e764d51262a3852e547aa95ee06ea7af8209bb26be713d635ec4d. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/USA2P1327464.