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 0x126488809708bd0ef087957fd54193422288c304cad2889be17268d1a63224c5. 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/930c2b2a-867e-48d9-8446-3168aee0fc74.json and https://artists.proofprofile.net/proofs/artist/930c2b2a-867e-48d9-8446-3168aee0fc74.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 0x259732a3812c1363ee286b5edba7bf5ac29bcda8678a4b9ac30a9665f951eff8. 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/QZFZ41938406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0308d64e372fd4d932bd016e0043ab2d7a2cff7d2b1f50aab72906f91537cbe7. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZFZ41928652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e497541081c248baf949a4b170c47a93d3f0c6a507c78ab2a908fa314934038. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:00:59Z), 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/QZFZ41927985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0c749b64d39401e9621805ca0d3a41c1b98fe915edaa039dbd34c247f1c9e2. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZFZ41938409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d776162fb279d4fa6d4e499f73fb4a24668e81e0f40cae278a0a90dbaede956. 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/QZFZ41920127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6bccde958d1a63baf6cd3685c6c27555f5a00770870946e2a6d1a6975250ea. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/QZFZ41928651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac0cbd72da35ad041770749748c49aa781f90bdde03d3f75c5ca1f4a9836534. 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/QZFZ41928657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51d5a74b7ba844d77711096b53deb53f7a00abb30e965f01ae0214bdb275bcc. 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/QZFZ41919199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e9126fb0f45cb630be979d20a60e84b1dc82874262b9460d8f21a809d40b4f. 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/QZFZ41927988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b8bf0c2454e0bb9b65da90bad361f72b1db75328db381da2ee094f241d617a. 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/QZFZ41927987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9632d2632921a3d6e2b7135cb73b193afa54c2faf4508559e20044cedf99c5e5. 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/QZFZ41920139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1ee98535ba0022fad30fd1cc66f811203b4f357e28d4e73dfc2437942012c9. 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/QZFZ41914066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1350013d79991b797b44b8bb3deca503ada8b4b9bbc0c5ce598d419e03003351. 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/QZFZ41927017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0715721415c4c1bbe724765a38eecac031bceb69e4f4d56991637e1da0b887. 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/QZFZ41914070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41acbfe839ba9ae08d11ae93e853dd968877b547ebaa6ab93d1ae1a383c4b430. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:21:39Z), 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/QZFZ41919190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c12658b495e0550be833c7da55a8f9c67ca11625a103886a0a54143892f8abf. 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/QZFZ41920131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd936138942f26ea4001a94cc4e1fe284dbaa33e70ef352cc2ae0694c62c35b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZFZ41932116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340a6a891e4d1981ae6b350a71122df2a03a872ba43016ebdcf70ad3894deaf9. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZFZ41927977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3998ebbe9c41a48fc9f8998bb8511bed333d18c815fcad7548826a77608dd1. 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/QZFZ41920130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf86a8631172046ca9765c9846469ce0b532a85a6ca6b78070099966a55d9ee8. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:01:02Z), 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/QZFZ41920137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7b851f292aed3f8a371590a28cf02fcb765e047a2433ca8cc8e15059c56270. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T19:04:21Z), 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/QZFZ41932114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3491db1ecebabe5367fb8d857d43f220d4559e84ed9b33c0685485361daadf1a. 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/QZFZ41920136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee783734d9c69772e2930c447f77be88a31e7741d6f00ae09768addfdffa9966. 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/QZFZ41914077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1127e8d835653e7bdb482548b24f2958d9d1e984ea4487723190b441a07da84b. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:16:47Z), 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/QZFZ41914071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fcdfb485751353385823559e5ea83a37a141f32c0cb247938babd08f882af1c. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:54:12Z), 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/QZFZ41938403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e289a1278e938cd8cc7566813f85fe969faef2bc02ddbfe1005cbbe788476c. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZFZ41938417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b60af0527ede0d5a5cec323b3de38ab9aac686d6e42734b83249adf14f4ea8. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZFZ41914076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57899b79d729f3d4374e1d629fb4e70a9ea965343154ec9a90ce5c9faf52d862. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:25:15Z), 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/QZFZ41932120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd040be59276d8956830c7ae01914d219c4d7b802c30c4adc5b790ea5a02b9f. 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/QZFZ41927025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba577bc6438bc80f4cb341dec9c2c52d5943148c1fd0d19dcb81ef495689faa6. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZFZ41932122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd621019fa00813e43e30d78f32a7d5504615a858e5d303092187ea37b09cc67d. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/QZFZ41927021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9a3a64316807c310ceeeff74e8d7fbfde2f72458ac33882bce05057c297741. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZFZ41946270.