1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x4bdf8b498e04932334792258a9e9dbad617e0eff0705e998f6e0d71524f89457. Chain 2 (Bitcoin): anchored in block 953991 (2026-06-16T18:47:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2f339462-247c-4b75-b426-22872189e8a9.json and https://artists.proofprofile.net/proofs/artist/2f339462-247c-4b75-b426-22872189e8a9.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 → block OTSBitcoinBlock must exist at that height 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 0x9cd6e986ebad771c8fd7ddb4f2de57f4c4589fe586cd0212a8ca6e8caa43aa1d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBHWT0500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4ea93c0e1361abec8d9be837ad93371ac12879132276fde4421af16329bf83. 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/GBHWT0500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14ab4e10ea5cb004ac1fb0104ce0a881c389b773dd605f2718168c9e34f4de5. 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/GBHWT0500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5375d7507dbf5c1cf4e2567c5981b56153e6ec9f1b74b78fabc07b8a7f303fee. 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/GBHWT0500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb099d8869cff7275dc96165b6c32336ec8f3b420dffcf97d973683717f5cf9bc. 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/GBHWT0500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1296bf6f24d337d1f71566b2fa1b945338676542c341ed1eafa22c9014563423. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBHWT0500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb66d4fc2eb608770174a6297b4ced3d2106dc8af57999c7ad75391d1f4ce19. 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/GBHWT0500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4752e5ab5a984698c088aff94b07438cd1bd7f6a5cc09d0079fbbf3d63e265a. 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/GBHWT0500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a0d54a4d87f8494a55a3aaf7a2eb11c72b6aa46a88e35a68232eb2b8baca33. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/GBHWT0500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95110cf325c38a5801d892c01cec4c33a7807552e75cea5a48b3168a18e8eaff. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/GBHWT0500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe845d7f4a1c7babfdf9e38ba082f15a771784ced732d1501a305e8704c6da5e3. 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/GBHWT0500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371103c5b3d49897e4faf2e3b6f3e2f99ca7c4092183e25f9e61c1b469615083. 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/GBHWT0500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df8f58af52d0c311ddb7b2e2e0aedd9230909395fc4209f89a660e7b7724ac5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBHWT0500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124c39da69fab21c0e69bf5a7714256f9029bf4117525cb76a13606945fe1cc9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBHWT0500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b42c539f172b589789fe9e955a9ab9c6f04304136ef9df136698a9c524af54. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBHWT0500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9613e8918594157abb495d3159bae52ad0cba16b7fa256604bf4831540d9616. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBHWT0500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fcc48276aaef3481647af9677f9eb5e81707ea4b25bbb85735ad6008c10513a. 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/NLRD51412682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbb1483efaf90a98e63eb81743cef851e99de3f2fa70459f633684ea129e336. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBG5X1224301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85cbc0d765b059e2d73811b60ba289bf584b5daba0bde15eae9cae97b266636e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NLRD51403502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4022e867a346b711f523b6c5402e532832b20327e8b0dc58899ab774d9e68175. 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/NLRD51403500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083553f146f016c890cf047757630b3618e467b87d22db2dd3eb45506a783ff3. 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/GBG5X1224279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed0667dd3d7239b9978fe12d84773f7f1faa660fd9ec2c2c97818756f2083d0. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/GBG5X1224265.