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 0x71cb955963e06670656d603fcf1fa9664f4f59311b5589aa97413540d26004d8. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/98e0cc75-1b56-4ed4-8be4-5491d8702107.json and https://artists.proofprofile.net/proofs/artist/98e0cc75-1b56-4ed4-8be4-5491d8702107.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 0x12f4402a49b2ce53b30315b90b6e34ef49ad7c3bd83e6f2c2c82356663db54da. 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/USHM81445561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758c645e3c6a63d89a7dcc9674f63cd7de6fcf0478d7c98a4cd4092abf18cc8f. 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/USHM81445562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9022cdb140bbeca16ae1caf61b21bf85cafbe1aaf482f43cff597584bc39530e. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/USHM81445563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74861be9b0faeb266b072a13399ebd3b31c11876921dd82dd394ae3f4e71ba3. 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/USHM81445564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030c374137a8c1908a1c8c4de1d52ce44b6fadd0e307af9bfce6db4a49803945. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:39:41Z), 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/USHM81445565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72dee6d981062c812cda0daab2a47c414d77e9f1bda28b88a8992c5e31c9753. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/USHM81445566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3de59c75a9c565ff4f5452466e6a3875bb4e73e043bf24a389596bb62edf50. 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/USHM81445567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e5857fc014ba4d97ba52c6d6fed71f21af9468730a3fcdca3628ddec23d994. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:19:21Z), 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/USHM81445568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc013b8d0a936bec6f0e81a584186cebb437fadc21a3883a1a94ced266a41aef5. 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/USHM81445569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501195d4b73c7bf99ec73702146eb68f61463938d65457ba3702a81318dcbdf5. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/USHM81445570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c274483393d0f032a580487baf9121272ae377ef1d895be2fb328f4762368b0. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/USHM81445571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa47c675706a5d469a4dfad82158df3c3be80e298ec37db13a8f44d220b6d7c. 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/USHM81445572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6721121401cfa1362c97b3ce5728b447111f5230f4b07b5c06176cb4722a956e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USHM81766638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b14cf4c1bc9d397b636da4eb46e03a511c5a0ecd540bb54bfb2174aaa2bc7f6. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USHM81766646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75920b707f57e8a88b3fdc14249ec1f207832ed55447fb37f2df0afc03a45af. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USHM81766647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06752b4c2c7e74a977257306760a5be15b331ba61dffe69405e3cf087b7db3ac. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:46:42Z), 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/USHM81766650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4ba94e227bdb0a309ad8c1d1aab7b87a4f631e116ab5dc2d5f268171acdfd4. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/USHM81766652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03051bf753ac97d3a23500f0843ad482c6a16069421bf6aaefd18f001b421891. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USHM92244773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236a7fd9ddbe8a0ba5d5b9629f8da3b5f5cddda97f41b4a0e41c9394efb3f96e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:42:00Z), 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/USL4Q2205348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd303f7f4ce0694819928a3654fba5454e54fe83013f7c9699ff9a5857b0e85. 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/USL4Q2230400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee918d9bf57bca9a31df385d7ab3ad199c2fb9fcf70f7517310657d1bd538d54. 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/USL4Q2282808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31eba4cced9e9a1e3fcaf5a1e59339701b91204ac236f3ec0d8676f85614502. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:34:17Z), 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/USDY42314902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269c54f11cd28b721461141ea1ef5dd4957d8e2fb22be2f3c86e6352d67a979a. 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/USL4R2243767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a430f83247fd742acdab17ebee56a5e99ac1ca27fff74dc4c18d62af9947cd. 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/USL4R2258795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f09a7645fd96032af906a150d8e08524fd2419fc52ab6803b8882a892fbdc3. 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/USMH92397050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0a08d07fb8d2c6912675eb27e0207fd3d9fe51145a417def37136a2a65e393. 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/USDY42301565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e5f54af9c8194ffb3716bfd2bd55f4aafd443b58f4dcda6bd8efe4531039de. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/USMH92357185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b9d09961e8071ca80c8d74d41735285e8d0e8f45cc2fcf1f45ccfe5d7e1696. 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/USMH92396922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5d1aee536ab708e44f7d21b29a28fd9e3a4f7a35d3e524e4ed799c0c9b6d47. 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/USMH92357537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec34f20ac7c1ab241b3f924a7115a99a9bbafba445532c0d7f73329054a888c. 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/USCGJ2450776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2dd5832a34e09851ab72fff2fa4ebf37c3dc018375deb0c0265c74c3add9f6c. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/USL4Q2559323.