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 0x657b776c3ef514dcc16fa88bb6459fb3128a5c430d4b385ee56ca5752e0fe8cd. 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/b50dd5c0-2541-476b-8e1d-7d0deda51b45.json and https://artists.proofprofile.net/proofs/artist/b50dd5c0-2541-476b-8e1d-7d0deda51b45.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 0x16da47edd1b77469e858ef392b6f12e995dd850a8f2798ab0849a12f394af687. 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/FRX202290281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e867b0638468124360bc2888a8daa33245848a4e3fe7c8ad750f2436dd740c. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/FRX202290282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4042811bd98b1afda751441fc510d7aa5ae1399f6d5c98708b40292e4b556fde. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:10:32Z), 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/FRX452275219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6e81bac11ef81cb15fad375d4aee5c8cf87554e8ec7f55316d60435b40b7c2. 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/FRX872368004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17f05d43f4cb930dc7bfddfb5cf96dca368cce164b0b59ad0b17de9fe38090f. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:53:08Z), 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/FRX872368006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8774d7e88b8bc1f92026ddb9f0ed88f39b4cc1c6637563727bf69097077b305. 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/FRX872368008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0c44f65a68cb241e75f31c1de645d9a2006f14546572c31346846e1aacd084. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/FRX872368018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd891d08a3e75e01c02a8a4555ea6bc068b1aac59d56d62929a51b4c9214322. 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/FRX872368020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822fc98933e2fc195a4b8d5b1a708b7dfa4193bd0fdcacd3e86735fe30f2e652. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FRX872368022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3adda969b56b9df9177b881772c1c0e638bc0c66ef2bcbeee394cab5ae4095a9. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:35:34Z), 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/DGA062380588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb629889a437a0d67000a8d5922092cc3c00cd6eb49fabd2b652d459f999f80. 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/DGA0M2375037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f828c979db0ffd7af930ef0abcd144b955ead0215a004956cbaaf7c762d2640. 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/DGA0P2304193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ead60718b392233a18a5ee432855759e6b335c513759f2e93f8f782e247a1ea. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/FR2X42416499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95528f25d7b89a6a79b52c7a3066bbad7f0789d023df06acfcab170b4e931d3. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/FR2X42416502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2974603f967115a94a8c2df672cce5a9e9cc8dd5192d2928ac19bdd9fbede2. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/RUA1D2442410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed58433160d65dcde2d17dfca1433a9a27e77819272575770dd433e02a677359. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/FRX762434605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336de1deb62acbd93721ed70bdbd80fd7f8c23ff338933e0f003165cd81e0283. 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/RUA1D2497086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62950207b3f1c02b783db1a163ce9c0d1674f79a4b5f865217bb97f63558ed89. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:10:44Z), 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/RUAGT2444741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4beca5fa5a9a9ecfe2e13f50499af359a6ef97fe7826752dc11a77d422b60995. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DGA0L2468006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509c8b214bb91d33fc811bc039c4e5d9b9ab905468b1385f2d7ad350dcc1c29d. 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/DGA0Q2484572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0ad6efe47f7978307d03566342c8d566b445d13f58f7fe16a9e2dcd0c8ba50. 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/RUA1D2502474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608d5cba7d1cc7d7164dc93cb6f1dfc536cec4ea1316682f25b1f307438ec93e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/RUA1D2551766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c291f8d9ab54457f36031a1017ba20fe636b5f9d23b5a7fc85d03cff4ae7e62. 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/FRX282546375.