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 0x5bc9a36b80f1b6240d21561fde00f228c378886907c33e029ce33191dd2e39d3. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/911a3e71-3f51-4b7c-b406-9dc88b18e576.json and https://artists.proofprofile.net/proofs/artist/911a3e71-3f51-4b7c-b406-9dc88b18e576.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 0x28c8dcc2b60c381562b2f7af040905c2915674e8a3c543e47549b08199f005b3. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/GXHAF2513863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ac5a5f2fe3c225f23370b9adb96f58f9d79de298b6dd5a24d447bd0d68b0ef. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/GXHAF2513864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210e71427fa15b3a7ffc5eb2d3ede1d66482cedfa8b42dd5508ea6f999071dcb. 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/GXHAF2513865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44b0c0ca67d17128fd32fabe6c57f85ad34c1fcd2d048204b1bbbba703b8297. 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/GXHAF2513866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e11aa8b305fd17ba51a1d8bd711f8f73fb70dd33c4b73c9db9129ea4338f1da. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GXHAF2513867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7102c186df78457cc1a2d137282516cc5a7b787d0f9de7357a4e0f89058fee. 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/GXHAF2543797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65127f5bce924c4c4114d9142d01ec2f1e0f03add26ddf460bcae4ae9c40f28. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:40:32Z), 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/GXHAF2543798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7efba73eaf44a4361e9b68c4db2502d90ec13801ded0f275926ac631102686b. 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/GXHAF2543799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10eef4184f24bcaf1c2919d8c238dd2b445727ebf7d4605dddeb59ef704a096f. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/GXHAF2543800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca3d277f593e67c9d5917e98f51fbe4a02cb428dacbc3647d50e91aa70971b8. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GXHAF2543801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378e4bed7d6cdd3ff315371e5692d9c48cfd79f8c8e52f2b93a42b2f2439f9d6. 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/GXHAF2576250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7af3a468017077cfd390d030373f4658abe2c0ab07739fde82b74ca1ac5b309. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GXHAF2576251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb2e92b528c15cd9e382f663e7fa33809d53cfbe86eb43cedb2457fc73ec0f4. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/GXHAF2576252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c284b3724cea6b0b2959d87f38efa3d0f68f1948fbce46288be31bba79f1be7. 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/GXHAF2576253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc746ba3eacf2df1d194c6d1ffd47bd9b0f6823c558b47ec18a00dbedd6575258. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GXHAF2576254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe7b72db256f14836f1cd1d146a049a9e6c9341d683ba02487d36dbfe7837e9. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/GXHG92536384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dbd0cadb9360d5b6195e62bd82987ed9b9841368bad38f158d81492d8568ff2. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/GXHG92536385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722481e3886cd4948ad341ca5bdd6062ae7406fe717252b23b551837355f33e2. 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/GXHG92536386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403f5f5be3fcedf8de9e075a68a5e9bc099bf1b726540a37eed7c478f666f96a. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/GXHG92536387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f38d663c8f1c3816ea6ec4b8e40cd27456f8621b0524e8cf82f66e4e5b3a5d. 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/GXHG92536388.