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 0x76475942164dbda624f7b417a06d63a98d01acf9d7d7e0fbebb6ee1a9be5c423. 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/26c2ab6d-88e7-4147-bcdd-a96f1beb7369.json and https://artists.proofprofile.net/proofs/artist/26c2ab6d-88e7-4147-bcdd-a96f1beb7369.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 0xfacc318da6a3f1a83116bad5e44606d815b8336f6fee9bf64c101d7fb6b2f973. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:43:22Z), 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/QM9AA1420113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a3e2acc932b8bfede9cd73440a8dff76e73cc7b0d96e913f0fc17030cdf208. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QM9AA1420116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0fca5c200b2f3309e49623f50249e3b663737256759c0336640cbcfb93c2ad. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM9AA1420117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c3ead52bae3f7c45682bf4c118639ac5608c7b839144e468ea9181c6c6eff0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM9AA1420119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1b75d4ce9162576f4db55d44e8d8ead805809aa0152b01b4a21cfc9a0554af. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:45:50Z), 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/QM9AA1420126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b712e2c35ace0ce921cff1d98a8a8de161b5e1c3bc424adfc9a17367d19766. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM9AA1420127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f693b524943fbef1c86895f2342a32b7d6c7150986aa550e6b32fd439d7c14e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USCGH1629781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01348dbcac041d54137849b2e7365b5ef8746f3d10b319c55f11670e48a74e22. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USCGH1629783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a7762b07722788c04ea3d6b96b343fbe1a454abd9902ec312644e87f3cbedd. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USCGH1629785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff50de76fb8af0e2bb81556441658dd5749af3bd23948b1dcd8764024e56d29. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USCGH1629786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9a743da4a109a711a313e5a3a2b8540132097ed7f0154f1b3116951670be44. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USCGH1629787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5d33a1b910d29acc0221a3f77c0055ad8906579be294071ae8c802c3251923. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USCGH1629789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2cf029fac5addcd0fe11991b9322770ccc4cc1211ad5da8194bdebf4950c3d3. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:08:44Z), 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/USCGH1629790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69cff4e644e6c8b01675885a78a1cf02359167be50caeb56a94e540a2c4a20b. 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/USL4Q1895195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390c3f4b9303b028c26db533d129d4bbae11a57df094d66189461fe971b0b552. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USL4Q1895197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6452ba9cdee2925e38598dbc8145ca558edeb1e14465df300fe37815c618e581. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USL4Q1895199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf05d29819645f81985b67696d5e6de0fd4aa4097ffec0838e95ebb047759afd. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/USL4Q1895200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf178c22a0fd41bb042197ab8715803cbfb01e85f5079776ca3aafb35d5f826a8. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:58:30Z), 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/USL4Q1895202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d56542ccdff936b6ce29e8037f5bc7e01d8ba694adf6ae63a52ec5312a6e00. 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/USL4Q1895203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262829577db9f2011a181ef1450077daed05af63547fa80c8052bbc1496daecb. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USL4Q1895204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2224774ff198e400cbf20796a84112605957e152ba576abbad0f9f8c1ff1cb45. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:14:53Z), 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/USL4Q1895205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1bf836c60b3999d806831b4bcf6795d52add2aee50fcc3ea0d2a90bf768204. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USL4Q1895206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aec59c8c8f9af3f675105baa038f85a959b39d7e252a8ba38a02fbf9f5fc705. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USCGJ1923997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca32e03e0fe654b6af937dbdd8ae5f0a752f05ecca1a82a47b0ac362db4bc4d. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:23:51Z), 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/USCGJ1923998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf92a1286a3146e3eeb786a3fe44b96d1746f45471d433c66a4febb13a413790. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:29:10Z), 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/USCGJ1924004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2501d88edacd020a5b7c25add74dffe0c06b99bdc316a0d5f7bc1f1e558a81ba. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USDY42021070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422701e5d78a20ea2950cf670f8a00ae7dc2b25b5d30e6606e6c8ff53ec1dd9e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/GBMJG2022858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbcdd4cbae7cab5a991fa44d559e9ba035e44d9555b585c6df61277cdb906436. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USHM92166605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f05af016bea57f5b8c6693ca3a339e59c5b6610925d6dbe8ce0b49b6cffe1b. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:06:41Z), 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/GX53U2060258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6c1ae6e7dd72591f6f12955116bde054420ccf9545a6caf91a62078a12fcec. 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/GBLFP2234956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29dbcf371697ca69de047943327a5a51a2fa1fc5fdd50e6e06f2987fa638df9f. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:35:24Z), 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/GBLFP2208993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f49b161caede0f018860bc7ac92bc1ddb2b76f79367e8ee322d67bd6678ab33. 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/GBLFP2239633.
Twice Above the Atlantic (Road Trip Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa699bb7f22f00307dd0d6073707a9b9af188876fae8a839c1c537b91c161a4f7. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBLFP2239634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ecad4de2a9d3237304dea4859b2ddf4f40fc3d2747be9d75b280acf56d1b98. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/GBLFP2239635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d614c8b055c4ae64812c710340f54a59ea91c08dae6f3f3fdac14c5b69b8e3. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBLFP2239642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f9515a76930f0e100f42262a900d5290b9c3181e70ebc6afa5776b4dd00f26. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/GBLFP2239652.
Instrumental Indie-Folk, Vol. 3 (Alexrainbirdmusic)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d614c8b055c4ae64812c710340f54a59ea91c08dae6f3f3fdac14c5b69b8e3. 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/GBLFP2239642.