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 0x8b43aed380f4658e03cfd0c2e0fce09fb8b3250b74d474b30f4616547e766ffa. 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/8261a14b-bc8c-4895-aa54-9042dc2dd743.json and https://artists.proofprofile.net/proofs/artist/8261a14b-bc8c-4895-aa54-9042dc2dd743.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 0x16231ffbb2c0fb10a04d9bf70b18e33a0cb988d86e236541a96211a4a91822dc. 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/QZK6Q2174517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98f4ada86cbcf646c9b737aefbc45e0e0016e3857d0896207c4f635bc37fb95. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZNWW2175840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf247433855defdc7285501e4eb6ada3475bcf6acbca6bf46d08c60c3d01bb86c. 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/QZDA82222567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f698a3f7e7032350dad68cfc0b66652facf38298e2f3712d8334aa161a5b5d. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZDA82260748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d17d6ad365c618ceadffaf4b07c61b58afd9c033ef8c33a3c113b9c90bdd04. 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/QZK6F2297291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55b2d02c5423ddf698d81e8f1613e45adeb1c41c4c435f100e81204a9fd7e97. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZNWU2293107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b1c573fa5485092351806534626609e44bc99393c5fc035f7c8c960e098801. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:48:48Z), 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/QZNWX2261149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6994c2d224f4e77a43d59a0c57fd536d1479ccd23a6f00ebfeb9a9f31a99a88. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:44:32Z), 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/QZTB32208780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df95d138b37cdb870ceaf9550a4d53731dbad6e2ef9bc14512c4e469bad5834. 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/QZTB32208781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0ab14abfa750c169eb1ae2f321471abc8a45fdb63486885846c7f6fe348454. 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/QZTB32208782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c01226351d6bf279d8de9895b8741beda9467af09c00415a9337ca2801ab8c. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/QZQAY2375722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e809aa3b0aa873d28a0743f1ee441fca0373ed49da6a1090f486ebae6cfeaa. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZQAY2315724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d10eb101a1a82c4b12918b36e949720e2946849eea424fdd72b22cdca4aea8. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZNWS2386731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11540f2dfb8bef4eebb5727859fa41f83896969ee71b16949486add189a18b59. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:56:28Z), 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/QZNWV2320142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2680e880555ff9202422f261efc23ce6067d024442b1aff1a7c5a89c89a77e15. 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/QZRP52323407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06cdb117ae14d4065f62291a5e73788ec4e2249cbce4c243e06299f828a1383. 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/QZTAZ2317404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9254ca0f9a534947c452fc395dad6a12fef47f5afcb1665fc0b53f61c62fdc8e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZTAZ2317405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3e147eba906361f5ffce2af98913e9d30729c1ed2326e2dc6af1a5d18de907. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZWFG2396507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7890dc6be4a1862849151c0cacaa76da4d2745037801ad5114f73b8633fd6b6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZWFG2396512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e64cc6e5f87d5f37cf86d21140fdd94e630dfd01c5d8e0dc5389cea9bbc644. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QZFZ72478733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b350f5bf28c1a429ee0709e75f62eed8a760293632b1602729ac71d6f45519. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZMEQ2458821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e627865c5f078fb3bd619b8caa394afcfcd596a2687e471a654837373befd5. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZNWS2413121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec8f37e9c7242d6371c9f109ae82e65bdd5fe75c6cd1379d7ba6ccd0e3e345f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTB52455243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6fd126e4b78d33345f3db6ffd9358729cb1327df128cfded0a1a0171a51d422. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/QZTBB2418222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b314c1489e5c53281c3bf05c06641da9644ae9dd5eb595cf45f9183ce76fd9. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QZWFU2441757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60262a04d65e9df988d04b7dc8cd47cab48ca913b0db7f67a5f67ac68edb7cf0. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZZ7Q2453094.