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 0xee55f10ce59ef661454625553ffb6f4cea0618b1766f9825f1b6955cc976fb69. 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/c42c0394-5486-42c0-8c4e-b0747d5f9aa3.json and https://artists.proofprofile.net/proofs/artist/c42c0394-5486-42c0-8c4e-b0747d5f9aa3.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 0x2c2e4b91cab069aebc58ffe6ec2dc7668ab1059c579648fa345408fea2fe779a. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:57:11Z), 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/FR2X41766723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0717a4723442067acca885ca41a1554e2978446468bf996c93fd1333c1a1915a. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/FR2X41766724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06e5d7223c7bcf7d1dfd60e5927b310a18475bb4b44abc648311e860b8a25f7. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FR2X41766726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a685d3dbeb050446e43a860273ff17c36a7c3cc27f6d559fb32923117272530. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FR2X41766727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539533aec0e6760b1f448e69c1b07e8847d1726073b8bd6e2cd1cd9b55b9c8a4. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR2X41766728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c62ada9e8d655091c2ad1eaec752dba7dc4de1536b78e013bf98d2b05930bb. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/FR2X41766729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56bf25dc690e7a8ee2a53fca23cd3d4f83c563a3d1617b067296db1aa4123949. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR2X41766730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4589f3b69f4739e7a2df61e0374bd58776dea240fe51159f47a03bc270688e. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/FR2X41766732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eeb8eb8988e419374b544d575c9bf34704d21ee68b411318cf90385abd4704a. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/FR2X41766733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea20d3c9ac6db964b6463ae0d453e3229ef512dc4d933cae3b2e8a5195ec5c75. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/FR2X41766735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c428b07627ee92e0c0fc7c5e69f419888b89060378962167aee53b60452ca22. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/FR2X41766738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3403970adf50d6c971ed9db3715216d59f82adf5c9f70897ff4ddfd12a514e. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T01:29:26Z), 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/USL4Q1840428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c719ac8306a263ed4c08f93d3a83cf052dbc9b820bba7fe58713342edd9b21. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:51:39Z), 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/USL4Q1840429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83b31ee97f7f97eb682f4d265f032122292642a649fa36a0efe494d633b12cb. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USL4Q1840430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb032babe67aaf20c511f2196fc7a4918dd7380189a3e7c3d33cf7fb89f5bba33. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:49:19Z), 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/USL4Q1840442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9cf1914ee2da262a0cf851375095105e0dd23b2c0c4918ed49f68a6deb6e88b. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:19:01Z), 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/USL4Q1840443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb315d5be36b9912d793c5e6149b25dc0467191ce301686a07b44e0a2277bac70. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USL4Q2252565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b6e764ae00e9c781d3d6b6309aa4f66425bb50e80152a7a487c83785759401. 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/QZNJZ2330284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ebc5eb36f10a8b86065b0548ea212ca4a1b1906eaa73208db04d48b0108ec8. 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/QZNJZ2417599.
Ao Sabor do Vento - Tomara - Pecado de Amor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d54cde193752e085082a931b99019f937bdaa8e6ea02fa7e45f32694d731d6. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/QZGLM2550509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd24bbc307edcf29267fe5b20ed8d1c552c5d88815b83f643687761479565a9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNJV2598093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbd254efa6a9430098a5f55e0cafaf9e83a2accda7cd197c82fc353653d8571. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZNJW2539767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983e97d29a66eff9b034f224cc48d3c0c3ff02ae26952b449ea692b4ce469980. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNJW2557691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b29d07832e233df81250efda1cca22de4810bf858b2e2bdf6924a20fdd3bc3c. 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/QZK6N2511412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b7f1d1f43a9e6cb4dcf4d2411b40882561f78e3c744697e2490ebb4759a9ae. 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/QZWDW2449260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4082f5d42083f332dcf8f5346b13f3b97a0fe5e8c1dec35f1f88e41c5a34c4ea. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZK6N2511413.
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 0xd6b2966cf04f1cf95d070d10bfe28b53d40b27c85c3210687b90305fc1d9a3f3. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/QZK6N2511414.