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 0xc07933272ed2037224283138fdfb7e03ed3716b348b63495ea24469995a0454e. 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/31978fc7-185d-4a31-83ca-b291698b2e10.json and https://artists.proofprofile.net/proofs/artist/31978fc7-185d-4a31-83ca-b291698b2e10.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 0xbd9c31c607a61da99bf9d02455c9d5ab6f650d469c9337c823ca922aa85a065d. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/SE6XY2217720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b22b9d20997654d3ba1131bb749459f6fbd8eb0a6b08e604d359333d82a16f. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/SE5BU2386368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3c75b402b04a033ffb07c92a8fad9235f8309feb05e7a2b618d26fd503194f. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/SE6XW2317578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411a92c6d71228a591d7435b4fccf9256ff119396a8af393359ca4bd0b758ced. 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/SE6TI2304263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47deabf388457d14dab157aa3029ef43ec7c82e07101ff306b0863af6593b71e. 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/SE6SA2392757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0232366e54738cc5b2dc5cb1ab1ff4f18b4f94b540d09b0ed7a71bb71e7d24a. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/SE5BU2428801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a96ccd54b5ba11d2373af494fc2fd855c62e456e8cd8e7fa7d595c8776d8b39. 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/SE5BU2428760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d7222083dc5f8644aa71e6431949703a86201c9858170495debce60a6ca2ad. 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/SE6SA2420748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa9055b0f605c5c54be63d080b930d4052b934c35d49f66cdedb9c1b6bb2534. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/SE6SA2439801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fac8ea56ba702dc2db6bef6afc53d00bdf89d37957e0a49f61e8b6f3f393afc. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/SE5BU2567665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55760f1dfbd793223987c9102a0937e637e48a1f2bc9484716bfc36a87f4ec0b. 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/SE5BU2568438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ea4e6e0875a5992261156d3923529ed97fe976db8e8e384d101c4b10a793eb. 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/SE6XY2511713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38701a778496c049da3597ca90c748b21c69cac45eda9403000df9b02dc9759. 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/SE6XY2532801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f49a0774b298fae39b077ac03bd0fe746434093293261976e40003bfb95b54. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:04:01Z), 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/SE6XY2532961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64725381107658e0aaec878cfa83f4b4599a3162dec3d9f52d1a6e654aaee0e8. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/SE6XY2584552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8648e23b53587393bf1396b2e16966cea27ae763f59d3ad2b999936e0a95048e. 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/SE6XY2584678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc848b389413f30dca2646e16e41705db8f76ee718f2ffb0cf8288ef85341551. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/SE6XY2584672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1257fbfc03eeb47ff0af8046cb4d36aaa80d6f906dfb3c695a835d421ebe74f0. 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/SE6XY2584673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060aafd9df236f6c95c877d7ad5b08a51a1ba1b382e47e00c59706ef097e8ccf. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:44:07Z), 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/SE6XX2549492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e40bd1ab723ee2a994277357111e2b9672862fa03c90cf7b7ffa994abed5958. 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/SE6XW2504713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd856f8acbe3a0a4b2e9e86dad1b35c0f312062d520bb74fea49b0ccb6244929a. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/SE6XW2506130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80cdb0a118cb132da4b9a6576808260538382b4f0f799ee49c6717f00b4b29f4. 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/SE6XW2506036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12eaca22654877538b867b48684db0e1db3592554c8e3e3d974c8c9175d47f7. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:06:33Z), 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/SE6XW2506242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff2a1390589ae835a08198bdbf2850dfd0572eecb015e49c179e9d5134faa95. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/SE6XW2506243.