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 0x9e3a60859dd2545ff460fe148698b2b0924bd2a683e23c56ee6ed697d15b59c2. 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/961d60eb-64fe-43a3-9ed9-7515d20ccc94.json and https://artists.proofprofile.net/proofs/artist/961d60eb-64fe-43a3-9ed9-7515d20ccc94.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 0x7176580e87804aa46b441fb94ab35e0ee97496148b20b74dbf968f85fc611fb0. 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/ES5301560684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484568815326b7409145fb11a042461d155aa136b35c37228e3099491283e183. 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/ES5301560693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e52c40fa5e0e414521f1ff3d434535a197f673c9926687cd80d9d04ff2a14da. 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/ES31E2402361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3bb62e4f28ad1432c921d4cd21db5aa44485d5aaf23af8c0b654589fb9c4054. 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/ES31E2403996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d206e359c59fc9eb349161979b69fea6bc549b8489ec337afb79a74f6626183. 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/ES31E2403997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20dc29f9c6661615ef68695d69af435feb02a31866d6d430697b0db2139aae92. 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/ES31E2403998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c9b7ffec061fa85cda0d832e713be1159dad7d96769a55a0b1251a37d9b7d1. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ES31E2404000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ec05628e407f9143275342207b0f88b5d2e941a51899b67d664353a4bc5a65. 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/ES31E2404002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f7611616a4be28de2fa11c4c2dcdfc4651d218704e9b55abe39c3a8b4548dc. 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/ES31E2404003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e3cd5752341b2a4c8805821b22c2d69641ee519322da0e694828ea4ac9d306. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBMJG1820722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5af7b4c2f711dbf4a0ccb4c536399c9c624d323fce4618937de09b8878ee3de. 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/GBMJG1820723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055c07ca34cec7582b203ceaa8830e99c5c721013ef7c0cb536fe3a4472c552f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBMJG1820724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3699e155b528e621e4f891d5d10577326e3399afeb62ea6fbda85dcce22a55e0. 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/GBMJG1820725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6a4072da5062b79b195b7c0614cd667b65a24bd049fe3c62f885e684ecf21f. 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/ES5301867715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296e44c289642c05018a06d11d156724dee46aa974e64518041b1799bbf45702. 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/GBMJG1820728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73329a9659886d12540dc62f3e527b13b35ea20c118ce4d749b141079d0506ed. 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/GBMJG1820732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97737f16b160192bfd3ec95707da13ebe9b1e4b3d0f2088b7c3fb72e475bc91d. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:01:50Z), 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/GBMJG1820721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35cc3a1a78c461057677bd488a3458e6a303bf8a6561c01f80be8d47638742d1. 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/ES5301560682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef54f1ab59b5a942e6377c54059d0e2bf416bf6cdf878482cc6350f38332c6be. 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/ES5301560683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484568815326b7409145fb11a042461d155aa136b35c37228e3099491283e183. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES5301560693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8910eab6fef88a77d8d26fd91d260e250720dfc524c87c0e09736bca770aa9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ES5301560685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6984225cd39371713f14830dd3f6a6608599179fbbcd90ff536203afb617614. 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/ES5301560686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfefa874f557187aa7de1a3b8d09ac958b28733a58dbf7ffe0090895274f675fd. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ES5301560689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a311a39e033a8ffa6c6152e2412bbe23796edc37e2638ca150dab0d1cb6211. 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/ES5301560690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b69979b5df4e6ecff9f446a32495bc406342518b2e7e4af42e886a42c03a9b3. 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/ES5301560691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121c7847d7ae45bfb91da6e24bd17325ef9f7b881396b3afaa0e9edcc0ef9b3a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES5301560692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7176580e87804aa46b441fb94ab35e0ee97496148b20b74dbf968f85fc611fb0. 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/ES5301560684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc32b814504b7f0d42cee60c0207a6f95349bb0efc91b246a6161415b78eba4d. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:41:27Z), 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/ES5301560688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313b7dfec822a0baec123d0ef887ebd382fcc993d652fbc09872899e00db246b. 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/ES71G2027184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16589d1a5d2dfd52ac5a102092db66b91fc584d582bd45596cbe9ce8ac2c28c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES31E2508158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d7bc3ff558c46e8223a0c714de69ecd36f05100e6a9398623c7eb0589931fd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES31E2503897.