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 0x689910aebc8dfab24c6fc601be3bbb57a5678c050be2b0f8028880a8f59d55d6. 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/9727dd24-7fe8-4e92-a02f-5fdbd40ed19b.json and https://artists.proofprofile.net/proofs/artist/9727dd24-7fe8-4e92-a02f-5fdbd40ed19b.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 0x43c72b0e71ebbdfc9eacf5328d2f47d24a55ed1bf1beaa276f5262ff16f8bc3b. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:46:40Z), 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/FR2X41629573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2272063172ca7cd655bd72a1f556f8ce331acf9b12700244d366333a7f541f2d. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/FRIDO1810284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519867861f4279afc753320cde9a29ebd2e23680adb38e67d58327464dedca0c. 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/FRIDO1810278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95aa3167072c87dda6239461465cfbe6af1d2776678c630a21d4d4da100897b6. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/TCADJ1726087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4efbba8cfdd378cd6e2d02ce9f249b0c701bdb1762b045ec128fa17665c0c5. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:57:34Z), 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/TCADG1749000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6b55941afc8d2b470c19e4efd9c20a79104b6850394353d3a82dcd0b743d32. 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/FR10S1966081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17a26ef12fc7edb0e7cca871efbee10bf9ff958d23894466344e79492df2f9c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR10S1966083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8b401309ef2cc16fcc6f6120f84d403fb81392f38c1a54c114be44798a11b4. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:07:23Z), 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/FR10S1966084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca4445986f7411e682191fb500d171afd81244922053c49ee34f6bf4598d2b8. 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/FR10S1966089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88624c28b9aedf47be3beddbcd7ccffe2e99301129c947aaff22a59bb1e46a5. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/FR96X1989726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a10194e13f30e991eaa5bb728ed03ef80ac82ed9d5d1d9b92b4e47702e861f. 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/FRX281935662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8fb151674e346855b5f306a7fdb33ef7b4cb4cdb1d582306afda7c142562516. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/FRX201958863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a5358fbdf2f34d97e349047f584ffe5b22aafdc28c8fb0433ece027bb832b5. 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/FRX281935664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a53026a205190e6a9dcda72a4765e43d0fba8ea16c60286c42de232687dcd3. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/FRX281935671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798fc4ae696bc924a0b3a72d37409943d62e53b056b63ddaff31cb368ede5ba6. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:48:42Z), 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/QM6P42052808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdac97ee012fc115207c0a58a0bf3067f970c2ce4ac4e63a086bf0c9aa70b8f4. 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/QM4TX2136903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5abe62ef741e3d8eb4613d43d8b5120eaa70ade8505ff74b9088295ececa1167. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QM4TX2136904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5cc97e2c32389204a799b89b7b3245825eb66625121448fce5db786c268c68. 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/QM4TX2136905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029c876de4bcc0520410a5f07bf36c056fa6d7b5587fb45a46a632a72e41192f. 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/QM4TX2136907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3610c3592801e801c02366562e40eea31e2a04007e20c792fa705e5aca045943. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/QM4TX2136909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e8246cd5bbb080d4cfcccfddec3f1c0644fd9c60e997e6ed67a6657ac9da3f. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:37:55Z), 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/QM4TX2136910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd557b5d87be4b5c31f11cbd234cbfd834fee2e3f4ee861a1ea01ec3ce2dcf6. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QM4TX2136911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad4e942ada793280b68628fe28e4f205a3a28a0b10f440cf057b471f32e9bcb. 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/FRPZ92307680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44912a9e39b215f015929b7fc29d8ee586e272d59fc9294eae0be2ba0d8e03e2. 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/FRPZ92316570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a10aa63520336a60019671d6d8242bfbab4fe0fe63e4b920c665f21835abb4. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:25:44Z), 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/FRPZ92420300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb5f9d08142e48f117c057b98145d710d0fd6b078c5812285a13939f6fd696e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRPZ92420260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb44d665c7297d464f9f7401d3b84c288681d077a3e40322f836004965ee1cb. 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/FRPIW1800090.