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 0x3fcdc0fcc33882b065e80a1b9fa9a38e8f5d4dc531c4699a5e46cfa6da45f7ce. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/25cd7c16-cbba-48ee-bf54-f07d22f7e10a.json and https://artists.proofprofile.net/proofs/artist/25cd7c16-cbba-48ee-bf54-f07d22f7e10a.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 0xfdf57a804876d35f6e7cc175d2276eb6ecd34f4ffd2042e643d4b0fff212b9e9. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/USHM21398750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ded39cc5489f50e9fa02670b2e660e0a7abcd45b05153a86cac3f14cc9fd7d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USHM21398751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fe4fa1c3e4df1848de010217f92a6e9b6654da665b5f937f63d468ee78eacb. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USHM21398759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe490798a14a3c3e219b60f766c870f4e2303e4ac25ea494d8eadfe337b40f9ab. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QM42K1702065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91bac71aba681c3445e5ed306641541552cadb393983dfa3e65ec051e4cfd581. 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/QM42K1700117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa828069da8e9906c26efd0dcab2ec8328bf4f27ccab82e117c99caaa4fb8225b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QM42K1702076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f71549ef65104eb2875619f0d321aeecf9efdad1cba0bd0c58c22b5295f9e0c. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QM42K1702148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd97e4eee12c70e628656b5e35f3bff678ee999b59a0069b75888acc4d5aec9. 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/QM8DG1807124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa828069da8e9906c26efd0dcab2ec8328bf4f27ccab82e117c99caaa4fb8225b. 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/QM42K1702076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993dd39dc95f62848b5834be4f83e84951a590bb67c11cf0ab7c32d75d974bf2. 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/QM42K1893571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcccc565b7586323022534af2a066a1b825447bdd92ea7fdb7ff4f6c5c94acdb2. 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/QM42K1702248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f89e25a0086d575c47eeb5f8d16f427652f36750f4e6fd4d21f01fbd2499e12. 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/QM42K1702247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e44baeea31ac78e92a62277c11b64499118ec4dee3f4230aacd94e952e4bc72. 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/QM42K1855412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2ff395b02152be2a06957a269ef5551efe3cb2605cd51c71b84a27852181f6. 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/QM42K1702061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935b4e5c4d6af6b63d6293418a409ad0fcaf3020a56694f7a83678d95d1bf0c3. 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/QM42K1841242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd3608a03ae8cc78781e2abe12f2edcb278cee68a1d1e2cdcd1c2081e4e5e01. 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/QM42K1898202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66239b66ce144366dca4e062b48023c5d3ceaf42294f4b5495c26826f462a00. 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/QM42K1821906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e364a1e0937ec46c2d42359a48690b9cf2435adafec0595cee3b3eafdae8407. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QM42K1848105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca49e458b5e4ff1f9fe131268da43b06b3501fe1726fa6be88f1ec30c91409f. 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/QM42K1702242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756e74c663d815943d83e60fbc0656bfe070672d9f74aac91d7cd30932e5f886. 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/QM42K1834150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05c6e5e78600d680c120b19b50dc7e1fb4ab419254a3a66afe1277f19a49a7b. 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/QM42K1702070.