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 0xe711f33133b6503c34490a91cb8546d7e4feb18d8f30a0814e26fe0211f5e410. 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/8468eb93-d62e-4a47-b830-a04d01c66d43.json and https://artists.proofprofile.net/proofs/artist/8468eb93-d62e-4a47-b830-a04d01c66d43.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 0xcec19b376c57fce3bbadffd161d0e568153e3bc785adc9122648893a7b14ba12. 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/HUMAG2300142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283d945fe68ebc6b57cd298a98a9546412402cbbef6708970ae732c4cd2fab0a. 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/HUMAG2300143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f318a86f03258c773a0a1b308a23aebbf46cd030ff8e34b4a7e0a6dc039aba9. 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/HUMAG2300144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8402bab00c77aa4dde95a2679963488e99ebf3a74b897928c1278f1682faacc5. 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/HUMAG2300145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76afbc18ec73e54d2cd4681b7cf409c1930a2fc3ec7c0fc40f846387312d6c76. 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/HUMAG2300146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018c01e37a167c96392bf9a84b38cd142676439110fbc5da3cc770d8fa4810b6. 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/HUMAG2300150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2f0505ab183275e6b54356ad2a7f7ce1f9184e7f37b35c72145cb2f275bfac. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:07:28Z), 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/HUMAG2300151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1bb05dfae9e941a525bfa0626bb051a704f73fe29b19d2e94a6d9001c18a1e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:10:34Z), 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/HUMAG2300152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca5f4f0e822820aa7a15fe1c56746e335c4491895f67d76403994261c1a4e92. 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/HUMAG2300153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b68061cfc7f39b1662756d94e989f81f4e2e62e731e3cbfc415a5bb2da45f2. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:22:18Z), 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/HUMAG2300156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ced332beeec40b1fe102f93f14154e05605c1a9c31752fd4d6d6fdda876812a. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:58:35Z), 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/HUMAG2001256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e10b18062a74676a824a8f9b44cf3905e505568bf1d5e02a700a5fe56312c4. 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/HUMAG2001259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5d376078acb4919386d67baa865cc99c1725d5212f3ce1c00eb6253ec33fa2. 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/HUMAG2001260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3985f3a17389e14649ee6123262e260ea918e58d30b2cc712c44a494c5613f. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/HUMAG2001261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5192296b2098f82fc08a4e8555c99d689202f4c595e047717534c416496f437c. 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/HUMAG2001262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f5240781ad75fce0ac67121b2fe56ba3dbae4753f1a7d2425f269a5ab87658. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/HUMAG2001264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f88f3d77519d8220f17bdcb11fcbb908239da8fe1c65ca92b92116cc0eb7c7b. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T03:01:20Z), 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/HUMAG2006825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463932bc564e4381c116e2ca9da7f9b3507afd541cc2f3ccdc13b83afee110f9. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/HUMAG2002607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfced0143aefbe3f466a15a15ea1fedd7764530ea6a00534219e3e3c4ec61ca67. 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/HUC041300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86325c1da496a1d19b893e182b682c8ad1aab309ba9b37ec3de6ed68e6e9449. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/HUC041300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe525974f1cbd5ca16310f434ffcae20a0e522238f2988113eab17fbf16112f89. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/HUC041300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8fea16e9de84a32566728c9f9de1964dbdb07d70138865f3f1a2aad027f581. 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/HUC041300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0ff1b008dbec8a04f8e503a5d3be821195a794b88e17284246983e3fed9460. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:02:28Z), 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/HUC041300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419160f7f820f0a48f216359a85e3a26c83c358be719b423938fb58ba4946ea5. 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/HUC041300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d0758ae74846cda0bdcc7a37a67c765d6784555edb08c787f56c09bb84d81e. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/HUC041300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66066c400d919641f87401a88c119ddceb2f6f2872347d0b9b356d11a4e34691. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HUA791700063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85bc1081c2a63df53fc34be700cedcc32998c93b55d3d9b18b0fa79287983c54. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HUA791900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc87d48551d472fe0a4ea02e5fa4b5c1baf8d4da34bde69f7a6a25bc79d1cbc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HUA792000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c8853e0ca251aa5a0e9efa4e3051335dbc332ce28241aab7b5993c216ec204. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HUA791400435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c8853e0ca251aa5a0e9efa4e3051335dbc332ce28241aab7b5993c216ec204. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HUA791400435.