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 0x07ad99609680659c8e6dc53ff2e2220556266add14dd7166771dd2f39806e26f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2c835b48-b0fe-4a61-95af-84141076c469.json and https://artists.proofprofile.net/proofs/artist/2c835b48-b0fe-4a61-95af-84141076c469.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 0x9a75c06382f7c8672d2d009bfbfa644cbb0fee1c6548e545043a4f5340c3d730. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/FRX282240044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b42f90348704fd162f4a7ace2f74f30be9cd17fb861d5e799cdd67f43e7e24. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:06:50Z), 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/GB8KE2313357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25549cb581650735f598de873b1419e6949b3c89babd128eb6d491acda7d2e1. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:04:51Z), 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/US83Z2332664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe844f92ad0ff52b29f92663c99cac75b6eec74e662271a0b5b3d7048d245c97. 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/US83Z2356078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff73c96d9cc6145203eeabe5554698e4162a1545087411b89392a3185faa8b1e. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/US83Z2356077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4ccc151ef71fe54d618c1491c296cd488384558d8161efe41fda3f2d3783fc. 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/GB8KE2400381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2871ad9312622514166836899a9a1f66bb8c00e3b3cd586cf69416a093997a7. 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/GB8KE2402733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2ee435bb59fa2de0743305b9b3c91f3a3a426ed6a779d41283588d869477bf. 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/FR96X2487273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d2be3f90127188e7029c1a511b0cdbfc6347bf18e97609c58047558e21feb5. 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/FRX452474689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108a3b1d7d5a99262b26916a6ab1feb3dfffaa7d724cb5ce321ecf54498a6559. 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/US83Z2482136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3386fb086a46a597663a4864109e70acc11a164305e603f4af6dca06dc0462c6. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/US83Z2490096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f978df722dc25431a29c317c6263a604feb4927ef9c83a822e7e7f4180ffb3. 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/US83Z2490098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f125685c0426f3cae810d2baf4ae23d259eb43ee0b787bc22d4f865c9cec6a. 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/GB8KE2415713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7a82bf476d5da688efb6c5286e23df2161eb85e3a3104aab11a84614d02daf. 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/US83Z2494171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e96e9c06b33278b39d7ca5dee211db058c9c82b577550dc950790fd8a824a92. 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/GB8KE2415088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00afff2722e321484988453412e098d0430f21e3e15c2f846aa964a239d13df0. 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/DGA092440187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c8c6cc46f4c380f0863e6973ae39e0ac2659264ac10ecc1e974d1ac3950265. 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/GB8KE2424802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4af019538aed144a215ea411e23825e53c0096cc4904ef71294f4e780db1e6c. 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/GB8KE2426793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72e448fed5209716241e1e9a25949abc47db1e5fbe76c6db414d2a9d02fbe6b. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/GB8KE2426794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612030f71881170bf89016875600298537a95c88ffc86ac30a3ea25c8f6a697a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:27:36Z), 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/GB8KE2503674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df7591ef0feb1d5230e65363c146d379311c383b1b2956ac469186871d70943. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/GB8KE2506587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382f7940583de25bcc0e7dc769381bfe61f26186728fc96ab3f8114f41f83826. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/US83Z2543475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734be65ab7daf4c9999753e6cdb765a837927570b848255e2b0533556b02e29a. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/GB8KE2516958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cdf7ef9b5a6cd0aa2a754ba7f24275a447d9a10044bcca6a5125acc10b0a4b3. 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/US83Z2547569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc728e4e04eb91dae2c61390647a2bb25df24db72e4d2805c2c22b66f09a7fa30. 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/US83Z2548696.