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 0x67caaa59c147fe8bdb8b542ac8d19c8a7d2a3eb40f5386c22d1a46f1fae8354b. 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/e911fa7f-d594-4d35-b78f-5511f2198a90.json and https://artists.proofprofile.net/proofs/artist/e911fa7f-d594-4d35-b78f-5511f2198a90.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 0x22e48048cb3becc33fc75447d0532de891611333cd73408560a5e6a050de4164. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QMFMG1488638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5734ed3ed192226f28cd413d942662aa63790680defb9f3b5291dbd135c2015. 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/QMFMG1488639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb872ec5a661e3a176ef381749c2c1824916b611f43c5f4546ea2232d8cddb299. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QMFMG1488641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8fa174ac41b8ba2a7d0f3f063bcd63e272afc5a2f65d99bffcde53634d44b74. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QMFMG1488643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c147c5302eca02bdc60cf73916c997792d660584f611785bceb278dfdd349e. 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/QMFMG1488646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8151f78ca102aedff78542935bbc0eaa5ab45ecb4b761e57d639f6550cc12cb1. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QMFMG1488653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e03448cffea8087b7ec014131b63c1dfb0ad2f376c9b99216ea47c40e24aaa. 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/QMFMG1488654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6315e49a3d9fc69db2792cd977c9094089d0105227e8c65d73644dd951712d26. 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/USLZJ1377015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990f6362a516fe2ba729f46708e54b2b7a85621c356e07df0fe6385cbfb64727. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USLZJ1377016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a16ff1a32f54b369c3b00c4fb2097a677369b9c8bfdc55c7836eb47df9f149. 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/USLZJ1377020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd529c6a984c0cae30619c9708c2211e83b8860bc6b87aeea6be4d00c3f7b766. 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/USLZJ1377021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833f94cf6aed5c9255ec8f32cf4b3322a3caf6369d0daf07d4bea643757f106d. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/USLZJ1377023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6cb70c21f3c7fdfa230549f03f0e47caef4b14d9854b29fa98d5a5aa057b770. 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/USLZJ1377024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a8ab795f29fffa65ac6ff664db6d713d38e29186a3b3c568f54bd55953bf9c. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:03:26Z), 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/QMH9X1400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3ec7eaf9df6936171618b556e3be3ba9fb63d6f495093692aa05fccd92985f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QMH9X1400071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2aa560c522ec0ccd42ed12ce55596e60faf21a06892839a7fee2bf9da4630b. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:24:24Z), 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/QM6N21474884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0078888b05306cf80237a50ae7ac64e278412904a0cebddb9a1323ec2072620. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:08:38Z), 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/QM6N21474886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696fc7bb82cea42d8d61c9c41a0b863b02e55d07b256f41e461818623cf8df8b. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QMH9X1400108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54bfb88a3f0d2a998ee45f225b8a5c3ed792f537278b4dd55152246274138039. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QMH9X1400109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8267387d944d0e1bf78c29d9939cfc1f7eb651d57124f0ce90ce47722e691f5. 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/QMH9X1500180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1779f3f9da9ff5af69866bb413957ac9c970ba21d9b8d80278ea48e933723776. 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/QMH9X1500182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d08c1c515fffb35d8d49b95d3049de366600fb36c20ac626b0f5cd71959ccaf. 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/QMH9X1500183.
OOOOO (Cry About It) - Win and Woo Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31044ecb8f0c7f0a333a8be59c1d740ac7a32bdc80fde21eeb7574d86375be2e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-21T09:07:50Z), 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/QMH9X1500184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385e0ca61a7a792aacb15e8f6666d3dee640e67adbba64ce45f3fd4bb12fda4b. 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/QMH9X1500186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f20dcba1a6a7558f6377409f1434fa173908a12489ec6b3cd20d0badd1f1cb9. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/QMH9X1400103.
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 0xc4c8b1aecc4b4571fa647f048439c33ecad223d5049f84285ee7ad826790f682. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QMH9X1500188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe489f1fd74cbbc72f959612bb0e8796304ed094ad7e166a8304232343d667f39. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QMH9X1500189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4deeba944010bf4e7487f485a59b820a0c3db434bf6977c6f9c9038571e1a9. 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/QM4TW1817636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d843d4b2c22d783d25c4118a133a99b756a3e24c2dbf9d8305b8359a51903e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QM4TW1817637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b939a717ac1cdb9079f409f564a97687cafaebad62ac9640eb9782541c8bccb. 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/QM4TW1817638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123e42510cb6ed34ba096f403219e49e07a640552475f3c04b49004025710b4b. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:22:15Z), 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/QM4TW1817642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068b58b9e02661daa2086e6212ff2cf090b284896dded54bc00cf11ba8b3cdb9. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QM4TW1817643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88ea51780ddf1e284b3323a1871e312ab3ea1ed1f9928300318147e4bf4bfff. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QM7282046652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691c9de2ddb3c5de2d740c7059d85e84fc866959d0a87f2e1b600df07f729ecd. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/DGA0L2304884.