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 0x7e3ddcc1ece235a82c194fe9ad0173ce4b5e92e8f0de0b81cb692e2c0857aefa. 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/ccb40367-a449-4dcb-a54f-2946faaa9655.json and https://artists.proofprofile.net/proofs/artist/ccb40367-a449-4dcb-a54f-2946faaa9655.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 0x6de9c00c56819cdaf9ece7ed4a5825e4fc29f16bbe0d554376dec6735c6a8287. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/TCACY1764775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b01595e097c84217498c0117a48f0c1285b252912405324ff4c40e445c8f9dd. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:11:23Z), 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/TCACY1764977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51680cbffe5537c077c97072cd83608d3e684c45f1765caf6b82dd6b094951cd. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/TCACY1764983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bcf9600cbc43a764d6cd1b2e381b753963801ebde69240b8c888afefe1c594. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCACY1764985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e03b0485e088290878fb19ef12709d8ef2da8e48c51bfaa0e7b03e39061d0b1. 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/TCACY1764995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca22b6eec82bae4ca3a3ed191eac47adc38bb5ee7597544da3fbe91650840efd. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:27:48Z), 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/TCAEC1957371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0617559ed4487b4ecf5e6d74bd22256684968dcc822f848a9bb6b6687b4aebb. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/TCAEC1957385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d8c597a7bb27b5d860c99cac35f87ff6b260a64a492b4a6842e84ab1a39591. 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/TCAEC1957392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a470f85003f75b884f23e822996000ce826a3f49d913e7fd96c587aa92be998. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:17:49Z), 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/TCAEC1957394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4dfef16a2e61c2f148340651b82c46c15f4e8d320d2961721fa54137cf98ec4. 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/TCAEC1957402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81574cf093a7d0d3ac55782d9ae3e795b940a1172d339acc86f5ba500d09ebf8. 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/TCAEC1957404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a5e65cd4a64d2fabab910a011badb12ae9dba4ad1e54a74dec2f6b6490ef89. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/TCAFC2019227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c5043cc2b940416d4b1db5ee69e101a43cfc4087d862d60a0e65b069476902. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/TCAFC2019241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c62571b4d7e9fd4533ddc763ea6b76b9eef53a7f8a93532363e729674dbbed. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAFC2019358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844700e2541c34ced614429f8a4876b5104e64aa51c5f4ae9de9731f9b593aaf. 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/TCAFC2019403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd791283964a09c783430dac78797323b05d6375274b15ddc7f0a785345d395. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/TCAFC2019495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d47262e2edf762b574acd9819375fb3d917a27f15f98a8841b8e1dfd7a34bf. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:08:54Z), 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/TCAFC2019519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c6902777fb65929475780cb54a26eb01761d1f17a0f84036cb7dd5ce95131d. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/TCAFC2019536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88cb6b222751daa323b8687af553a58f3e96f9d121b1ead29911e02f174c10eb. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:30:15Z), 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/TCAFC2019624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86fb9da79bac16f9a1b15312cd935d820ed2c5f71de7ee375a715576d8f7074d. 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/TCAFC2019645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3c509dc6e47a2da9df579a77d2ac9542228108cad1fae528ac15f2c9efd4fb. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:21:38Z), 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/TCAFC2020774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c037ba84098aab365b70f812910c43bb3c2143b6732437780be33feae121133. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:13:08Z), 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/TCAFC2020779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38985c05f4641457518aaee72da40c38e229134db53635de7906465c3645ca2. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:35:02Z), 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/TCAFC2020783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed3431f7a8318bf7f8d30853e53012fad1c24560caef5a9cf52700da8d5d9c4. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/TCAFC2020788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ab9da0f12b25d12811be94a407357d5763a39d47d6198aecbc0b162173b757. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/TCAFC2020791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf24c733e5e8de395d8b184789a1e06e447d27776c5b32782dc6fc24f397a67. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCAFC2020808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9580040fdbb5243dca72ac092c68cccfae8834410001cd69f86465a8ac68b81. 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/TCAFC2020034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77560e046c1f6dce2a1608fc14259587e5bfefe9b4b332ff6588d4686fc0e2d9. 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/TCAFC2020054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacdd8003842f0ce5b08b37c513137694eb9f077233268e5a901271acaf714d94. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAFC2020059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301ed84e05843c6e16755dfedaf776ea474ff35df5b7bcf5d34d7d4df91f3a11. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCAFC2020062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e93eb6e282fe0b965cfeb9dbcf1b5c282b594166f3341a2c5a2d539df818acd. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:23:46Z), 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/TCAFC2020972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b738b97a749a83f46fce45a6a98ccbb349a2f46431973064de63046ba3643f. 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/TCAFC2020998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425334b68e32b6d5eb1d2ca05361bee64563c2c79921f4233965530a76a17490. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:22:03Z), 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/TCAFC2021028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4159577fd6e32d3ec64e9896e5a1914b20cbda7d854d944f555506cdc0a69f. 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/TCAFC2021033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0b27689d097f6e65432d999198beaaebc2084bc7b891d1ff3259982ab7903f. 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/TCAFC2021063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb268f0c0140db52b50e71ea8c53886607e3d405a4d2d7ed0de824add0a455c. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:01:55Z), 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/TCAFC2015824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9316843e65aaddd56f752078aa150f8c9d60d916242277d2492ce1e7b2f1ca96. 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/TCAFC2015829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53dc899835b13bc63368c121cc512264ba9d8e406ffcdce25663316abeacb8b. 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/TCAFC2015848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa347d6bb3e139e80979eb885f01b70d43e3cedaa9cdaeb2cc3bd1fc366bd47. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:31:24Z), 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/TCAFL2193467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4461181f2adb660af2da0585e4311fb1d1d74280211955970d37a00adbd664f6. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAFL2193470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030aaebca5e4f58119457b20a6d1b895ad6c1f619b07d15d0afeb55f181cc67e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAFL2193473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2ab596c0acf46ac6da4fb6bbeb8561b21bdc3c786d27f61c54ddd632d1020c. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/TCAFL2193479.