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 0xe737e3fd5936528727cb338ac1ef4e9aaf18f18789117f79666cd90636fad140. 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/45b779f6-6243-4be9-8d6b-8be5646e1ad9.json and https://artists.proofprofile.net/proofs/artist/45b779f6-6243-4be9-8d6b-8be5646e1ad9.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 0x26db766f03342cddae9a9908bf86bdd6b1c50c72eea437a6993d14e678a9f239. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/QZTAS2385567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1fac862b3a0eca86dfdce637ecf3a22dd58bb2a1e00fac8e1b19b48132d3282. 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/QZTB52397736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77178538035247bba7d265b5f4dc674ff867f27048cd19150b721c03e30d4074. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/USLD91754535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c2b494dfcfcc2f2e6542cc011530966b7ca8e03328ae10a3f4fa1b82c1631b. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USLD91757296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b72e49e9717d5c2eb551e03aea1e4b67b646f9fd52eb95666c4478f6f1e2281. 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/USLD91757298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00392b235962de180634f5622eeabeb8b2b748ec1c4e0d00f523794a3a4f1cd. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/USLD91757300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9288beb654254c7386ac094b63c5f4e0df3cbb1e68f9352365d8a14364f682d9. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/USLD91757292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f386c6055eca244393bd4a9eae47c86bcb5c2dd1ae0eb5e04dfa0cbba4cac20. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:49:40Z), 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/USLD91757293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57cc8a71c3e8d33edf6b91a3b829755b13b1832efd181ef2580263ec7e0b3e6e. 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/USLD91759546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b660790b98c8defd5b55ca00f1d0ab03537c407c01688e2e9489eb60db9d07e. 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/USLD91757294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f244c35b7ddb69b18d3217e260d10c451a69ea27d2d9ed124213881aecc10d. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:01:18Z), 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/USLD91759548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076ec4015314a87373da8acb624f8368bb03cc990a5a5d79dca4d00330ace31c. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/USLD91757295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b72e49e9717d5c2eb551e03aea1e4b67b646f9fd52eb95666c4478f6f1e2281. Chain 2 (Bitcoin): anchored in block 956809 (2026-07-20T11:55:10Z), 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/USLD91757298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf6a89412f4dd7deabef9ccfa36eb83b61c017eeca3a53e0086de1008f7065b. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USLD91759551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb518205b2eb032975bf43fa10d9cc8bded3f393f48a03190f5c5e55969cf04. 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/USLD91759552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00392b235962de180634f5622eeabeb8b2b748ec1c4e0d00f523794a3a4f1cd. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:12:00Z), 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/USLD91757300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff05e870a8872c64273c1afaede0f1a7d834ccd8dc9c22aba9a02559f8e473e. 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/USLD91759553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89eaf34227539aa8c8905cca844da705dc58b23129c1d65bbdb9f27239e87c9e. 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/USLD91759554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2591f81586c1fafe1a3b2b951cccc094cf8c2ef9a042a356c4d0585adc2c8426. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T04:09:07Z), 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/USLD91761222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f58d1dd8807bac2f59029703fb6276f6fe18b6f0b5a2f315e308d9c2ddac118. 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/USLD91763274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf762d0e9dd724d924c7a8ba4d1784ecf668ba5aaab31e3b49fba51e9d3218c0. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USLD91763277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4972d916ac0d49da6a53284d24dcc05cfefba2e3c59e78ab003e43190f95303c. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:09:59Z), 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/USLD91763278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0034617a0db61f0e6e0c58c3717eca402bbbf0a03d1cc9ec75d40bb5ef1caa. 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/USLD91763279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb600fb0e35da8182a7d6e130dde2a7feba33e96af537f785d517e022adc24899. 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/USLD91763282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b6745133216d954c45b7ed0f5fede7a3d603299372dfbb071cbbfc5f044288. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USLD91763283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b40b62fc1e998395c036634f8879b0d2c09440a0256b986cf60313cd539594. 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/USLD91763285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2784d024479a1c433b42b73c54be3cea31ad1a281c0070c3a4855dce50008ee1. 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/USLD91767436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0829d3f08a97eb809fcbb2aff8f6ceb70e7d8403ce320c96f9d2a7b88d80cee. 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/USLD91767437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5e10216541543cc60861b573679008701b2ca68835d63966e48d674980e9d9. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USLD91767438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f01acb8c4fda608638aa6b5b63c7c0f63c22aa2c31cae5fdcfeb492c11292a5. 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/USLD91767531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ffc61b055eb876c055b2b76f30f0dee2b24fcc832d2145aaff04728de65707. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/USLD91767439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c4c9eeadfc753e60964ec4010b2fd235282d5dbc2a3617fd2c302e95b52e95. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USLD91767440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60fd6f34cc84acd729213e501935b4e303f63a654782a1de68ceb3ada33790d5. 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/USLD91767444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf39618b359872f4ef3efacdc55475faad7a75bfe272391d12f2a3c7bccdc13. 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/USLD91767445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17ae29ef48faaf4507a56d11083879041f1019d230d7cee7abbe95611bd2dc1. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/USLD91782218.