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 0x563c79ff2464a8c561d9938e94b557cace87e0441be20d77d9fa703c097ae0d1. 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/0ab0cb42-1657-489d-8d6b-188b97187ab4.json and https://artists.proofprofile.net/proofs/artist/0ab0cb42-1657-489d-8d6b-188b97187ab4.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 0x95863c1b4d1e4921fbb088be11ae1e4e508c802c507de43e1059f01c8056bc3b. 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/USTN10900608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b380793d76111a9a0005a0d3648663e74ab3f9386cc8e15abd6d8f78f9c2e52. 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/USTN10900609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf191224c1be7ccf67cfae02ba4369e56b3270dd1a33eed75735672b414450d83. 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/USTN10900610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d4fc8b59cacf98c91f2ebc2ef09d8d63689fabfd2727894b8c6b77f9600e71. 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/USTN10900611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c78caa1ccb9db2a0eaa0600334e21438f4845eede715a887b88a17ee975601. 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/USTN10900612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c58b1237dd90ec45127115306903fde037e9605a75fdc829ef5fdde43a47bf. 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/USTN10900613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c134d92c58a805fa64f54e2310332670836636ec10109a0609b46de6adb194a. 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/USTN10900614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8564b9e4848666879d5c56e0afbcdf36ea6a61c9c26293dbe3fcd4f6f34688cb. 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/USTN10900615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad515612b5ed13db98cf4b288457f172b88b3be6b16ac39902d9efcc64671b5. 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/USTN10900616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b54a5e25c7a4917a0c98cb59445d069976bf7421fb95c3d568e45ee317b0c4. 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/USTN10900617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e42f13ae1c4e1f2f21311a9668b0b7e59d0971066908e66894957e40f913345. 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/USTN10900618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d82185c27e27a08d2a9e5f10dfd328150bbf292b5aede11dcb00c4309c43e2b. 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/USTN10700613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d5ca22faf5b2b9c6970333a1b8a3bf24381119821b139d66752220223fdfa1. 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/USTN10700614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2273c6d0f0d7d26bc7e272e8716f8f02aa1900db6da08322464c96db07fce695. 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/USTN10700615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fec9f1393463192e4fff95648d74496faaf4727e01a2c8293c288e5c848341d. 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/USTN10700616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2d4b486fd7368accc9f0d4789e93a0736886eb924e616f3bd09d1f21b42fa0. 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/USTN10700617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac4e1fa54a1cb5e8d23b35695937d09690c4556b313350fc6a210261740e0e9. 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/USTN10700618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb87b4f519da9711d7c202828974f114f4617ec619efa7fea952139f45e29555. 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/USTN10700619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df10dc01539f011984805a680123ebecc09d9fd0cd1d570bd226744f1be9772. 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/USTN10700620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae620e9452da11527402ee4c29fc697e1f05febcb03a0378dec1fcacef9578c. 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/USTN10700621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe283ffdc9af14b803b3578922f92317e5220db148c453c9011adfab1cfe0d64d. 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/USTN10700622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1412df1bdfd6a4b3e771bb83a0f6ed40918dfb5a88b8857da4755cdc86d232. 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/USTN10700623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762582185a150adfb7a73e99cc8d491367bcf26f5e0708872b66c6626c1a7f42. 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/USTN10700624.