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 0x0f909d1c4887de53f78afdd14f7158c5dcbb7a898bc3423aea7382389103c953. 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/b511c4a5-cce5-4e29-9aa7-cb0a626c930b.json and https://artists.proofprofile.net/proofs/artist/b511c4a5-cce5-4e29-9aa7-cb0a626c930b.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 0xd3c0d0ce3a420272cfefa4128acae416f1844cc28a187bd86ff4cf214490840a. 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/FRX202051785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59919e9890af8f0cd8e90df9bd9072fc2a46e4ae2572634c423963c477fabfb. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/FRX202051791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9963d37d1ce09154bb823a57b0195a5f152633a66042d2b68a9515a3c8a6db1. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/FRX282197080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba72be539edde00b80811aabf3565fd4bd85f93a81f155837c4d83e59cbd1d84. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/FRX282197081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c080bd1278d46afd29cdc6b43662865dc689d40c55e7b78360748b8c63054b. 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/FRX282197086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e09e1f473fcafebed6a38be07b1588e63086f1cdc9bc06999d6aed25eec96c6. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/FRX282197093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cce8fa5988e61c26beab970bef54e76a2969baa5f1059e71b0687feb887d332. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:25:06Z), 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/FRX452236887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816862249afb24cddcc9c417a0431b67ed7ce12c3c45324a985b5cb5cab377fc. 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/QMBZ92353051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf0a93210e7bb4b93dd1e1606d89ed30dd5a816571c42727949d40547aacefe. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QMBZ92376777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c0f09c7e89240434fb30dbcaddabcd8c0fd5a41a18a48f30743c5506ae3ec7. 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/QMBZ92376779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf135caff971f14bebbe11e4629a52e11084ebcea0480ef20aa0222a3146cf88. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:24:32Z), 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/RUAGW2300115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec189f43ba823cfe1b3226e985cae2b86701f5acbf7a30343cda883917aab506. 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/RUA1D2401984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66ac841813febcd4d785821280870249e4b509a73d693c27a78616d5e83f815. 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/RUA1D2424291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e765193ed1bb76b43387e66a38ea3ce29a5a2190e132ea090409a660473f52c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/RUA1D2447669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0053ef7a89f8b0dfd294bf542f1f1dfb6de59b6ff111e975fe661b411778f7cc. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/RUA1D2447670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d088c51555345cceb002255c38f15844674c94ee4d266f34173475524d973db. 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/RUA1D2447671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8494b99ce1a318528c65303c6046add1cce14e71806acd5f190afc6095f19d59. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/RUA1D2447673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52aa9fcad541eeb5a4eac8868f69db631ade8df8731a124545035984d6551681. 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/RUA1D2447674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8aa5237ade2e8c04e619552500bb938e842c74ed20b01344e191f71b153243d. 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/RUA1D2447676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7b510fd870891959cf3f32a2e0a2e323f7fb51ea446cbfc5e80e997ea1a1e7. 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/QZTPX2443057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e5b4ce819a1f55aad841b901b6028ae971f278d538b1f159e940b9344639da. 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/FR96X2151300.