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 0xf8ef2cf06e35ebd4badf80e4f33e94106ca707b75b4ff691513d02df29d9e457. 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/dd806661-5812-4bba-aedb-df8fd08b2b6d.json and https://artists.proofprofile.net/proofs/artist/dd806661-5812-4bba-aedb-df8fd08b2b6d.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 0x290cc9745b6f78f2b6feba33375be2d40c1f00dfb5efb728be4fbb115a363586. 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/VNA1M2403798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084eb746ff215a1fb415803a5b765dc2c57802b8329dccfd8f23d291192833bb. 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/VNA1M2402320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d2e53c0c34d6f89254f61737037bcd114eecb4b49cf22b0133260d42176e39. 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/VNR012500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacdc9eb0a3400973180e4ed2d1862e01dcc805cd2e9d631505f92a6a22bedb9a. 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/US38Y2502512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb296495a4a07046bec8ad9f5023e0e284c55bea053ae8172a95836e7757e2689. 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/VNA1M2403870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc419f4a88a5e01678b8e71b824f9e79be5a69f60b66cdb16ad5ddf96de2bfaa. 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/VNA1M2401152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952d690158b27f345d234d2e6e66850e5dc8edc2c4d154ac1a8a562ba0378281. 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/VNA1M2400971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ea6cf9072d971f9c3010cb340e00b7ab5e446d48235d17e690a6b2481064ee. 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/VNA1M2291270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c60141476d8367ef3910f007c62929760718c382d21e992f959365089528c9. 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/VNA1M2291195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ab7da79aab7ac4577485735a4aede653f3e855fc8dce93a3543dd04e40fd29. 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/VNA1M2289613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192d884e1842528b85e6f284ab9d9facba0c7aa86f876e42aba3c1deb5cd6e32. 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/VNA1M2284833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd40d99015f89f6e347d0e985de6f051747d10c46b298a45ef21789f560be567. 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/FR2X42430028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db278f28de4c279385612f5d6c2b38a599a932bf6f568044ddb983f787caa41. 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/VNA1M2281684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea37ac508c8aff1e6fa78f2f00737dbf7a51f7450d2dbad69cf05b73c3ae2182. 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/VNA1M2237741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261623adca30e9a8373b7ec8d679417ca5ad408d2bcf4a9dce02df01d7a8fcd1. 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/VNA1M2235606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2941de9504edce471930b01e7afb62c47ad85bb126a922346df14bc9f96467c9. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/VNA1M2235612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e639cc04cb8ae411b0d191852a2e1e705be0f784983f178e79924582f82113. 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/VNA1M2223975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0eb7490596d708c6e8baf3ba87f73763049151c3ae7c5cd73c55efd7eb182e. 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/VNA1M2224048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b9617f4fac35a4a588fe0653e6add9578b4a2c74895ebd45e9bf0222fb3f69. 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/VNA1M2223292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5991cd4986b40b7cd2d53f58fca1c138c616f506d722f6f5620f820b749d7f. 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/VNA1M2223297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f635b49e339834096e0c271c55bd41033b1ef1a101d1339dff688418c6f5676. 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/VNA1M2219458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e5cef5e17d681bc6dd4d4747d6e150452a5e979201938510f59b2635eb9c8b. 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/VNA1M2219459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ebea886b7f4f3f73db982a542a96fde1c32a6af1b33e39a5a5784b98366dda. 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/VNA1M2214124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4c0a7b02905fb8f96b0025863bb3ed616d1c54ac40030a44441ce365a73a4e. 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/VNA1M2208535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40189c085f347c4088fd3bf963f68fcf2007dfbdbc71dd6f910737e2931a017c. 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/VNA1M2204387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba42fffe3254feb96a31c65303c713aca60ff3d10e50ed17f75235f6a8cf2e6. 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/VNA1M2202514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280664e4fe4d2baada0b5a782c6557de2acc6d747cff3b419c87ca1c3c22ea25. 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/VNA1M2404562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9393967dee7f6861e12019b11c409292e347d5dd5356e7c08f7950946ec4a1b7. 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/VNA1M2404451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e1fc01608d7399672473f3ed17df49cf0da6c31c073d9448865629d902de76. 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/VNA1M2400959.