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 0x0fb5224b13f9b1ef5222be1446df6371c1252309404e0a30a8b05b39dad3d005. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f4daf19-441e-4d45-94db-b8676ea79b6b.json and https://artists.proofprofile.net/proofs/artist/3f4daf19-441e-4d45-94db-b8676ea79b6b.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 0x79de42c59342597055a79e2577051a35a1125969c7a5ee48987dfb1a85ea18ae. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/TCAGR2262431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c80a61bf933a08bcd4cadfd25bb4ed5c71988c59c70855b02623201d33be625. 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/TCAGR2262438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20fa8f01f5348e71507c39c22fd732f6f1385c584b5cfff352a283ed41538e01. 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/TCAGR2262443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf048031bbf329d22e1c89ea1074d6eda20872291f13d9f83366c5f821cd0cb. 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/TCAHO2339430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4859705ec82ba1d3240f18f33b2cca6da5d02366b3d2f8392aae278478bc426a. 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/TCAHO2339441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9df58d48f139f261471948ab91dac0465e9d937e3be8aa5115edf9989a57810. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/TCAHO2339449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ee838b47b320f113b59de566f08c3f14bfef55efce7e7c424200b436e8d61c. 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/TCAHO2339473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2278ec8168831ff694f0b79a1e7d38b340c8294f072f2ed3c0303419e46e21e7. 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/TCAHO2339484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81efe1ed1eb183e1440e374cf1f6316d4fa2a9f4e4fffce7305fbbc8611bd27. 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/TCAHO2339496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649a8ea8d09bc0594c7c5c6fcdd3d2cc424c0978e0ed8127e655643061e15389. 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/TCAHO2339517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb16ca78e94327c0aed6a29b771f3d1a4f4f698bd0771207a925b4d8f99e4081. 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/TCAHO2339527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b5e294c8000b032e4563106b1f7e67a1f88ab625bcec41b69b04fbc1ec7628. 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/TCAHO2339565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994fd6dc6ee9152a1be108c342c8623ab259fcf8f289c76ea52db8c32fb3903a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TCAHO2339566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa975b9b5cdd2e54e9a12d16fdb69ef79782a59825e37eda2d9885910e7f694. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCAHO2339572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7328101485f2ab1323f5064867a5c3d24359dd267538029a893c78d2b0b7821. 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/TCAHO2339579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5a438bf6fc7f61ccf5404939b93a5340a6b5c119575be4c7e9a16bd34bb62b. 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/TCAJA2456193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953f3c63574d51a2b034250182a37023d1ebae87f53779751d8aca78f7aeb5a3. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCAJA2456409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12e76832b8c1151fd8eb65165c5e22c8094d07e6edacf12b83dbc6c71793173. 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/TCAJA2456445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5a9eb0509072c8ec6fa892d332ac9ca8473c7dd2ecd59ef86700250b0aafcf. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:06:47Z), 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/TCAJA2456515.