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 0xfd50b455c52aabfd1a2044d17b65e8d1f33f6482b5f6dd7fd5a4c5387088e219. 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/d43964d2-e2a0-4be0-9798-2d01e42b670c.json and https://artists.proofprofile.net/proofs/artist/d43964d2-e2a0-4be0-9798-2d01e42b670c.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 0xfcc03592f902e44a4022a865c9df4424fa8629e9a9be25961daa858d2817f182. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/DEUE12505811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228c422cda2f471cc99e575549b8a2b1a2397fe767db69e704cb232d201454a6. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/DEUE12505812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a171ac58fbc8659ab800c6c7e969bb99b76c6ecc808b3a16e0f7fc2b5dd9d3. 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/DEUE12505813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a769d62192096e1d3b659e1d893afa492198ca5554d52b5aebc78df6f4d6612. 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/DEUE12505814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bef3a528ab53c015db695c480cf69be6671ce99082042f0eba2e0796546a791. 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/DEUE12505815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1ef72c1aca72d629d00ffcdc2b7a1feb12827fa4ba5126fe727efdd273cbfb. 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/DEUE12505816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3602d9b6cc32a9fa7e0fece33298b27c5bdfe008b0f511675a01c1760ac0ede6. 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/DEUE12505817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059e19cd193a05a290841291edc75551cea3984041a50311da1ce4cf57408bfa. 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/DEUE12505818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a43716b96a011ef272f55877b6865f62a03a8a9ef41b1b32e3763e76f15cf3. 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/DEUE12505819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183909b95cec179792bf60fe98458e27806237136b2c92d4df19aa7c5199e297. 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/DEUE12505820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d71fb34fb3404c9fe2d44924452acb0a3e772090f99f5c99f0f37058a057a78. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/DEUE12505821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087eb61ed9edc9e167003070b49208e440140fabd249f4501d05849b80b10555. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/DEUE12505822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582bd2aec17c16ce3a7a0f53c64fcc5a37421953da350ed4f2d84b55b2a3c6c8. 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/DEUE12505823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa680fa9e8ceb92550674580f8a9d60860c459758df7c63baee1286ce2768c4. 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/DEUE12505824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8efdb3c07110f7fd5bdc8a70f6f865ca34facc61acea54b51db57b28298a82a. 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/DEUE12505825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6facd5fe9a57daf78076aeeaad80fca9c5f75f31c1d94dcbcbd829a140842a86. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/DEUE12505826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f2876ed670558a9b0daea027a36829b47fd07e52bf5bfc2d8d057cf2e6e955. 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/DEUE12505827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc859241fe2519bb8a051432a89d41c6499193d7a9b02996ca410a81f5660b246. 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/DEUE12505828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa992351e14a8f9944469cbc1a8fd638fa08ca3df97fb40f1563835ab992369b7. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:29:42Z), 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/DEUE12505829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648e4daa3d2184154040c690f6eecf22f3addac625cd67563664b30fef8ea1c2. 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/DEUE12505830.