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 0xdd8427f5722c91f254efb14154b362ad896c2c1e7e0bd2d5638b0136af11bebb. 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/05a16566-1462-4a9c-9d7e-b5eb078137cd.json and https://artists.proofprofile.net/proofs/artist/05a16566-1462-4a9c-9d7e-b5eb078137cd.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 0x8b1d102cd7a5a5105d23bd0c2a7e7dee9a3caf12eb4bbc929918f8a4e65d693e. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/GX3HH2464217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec69fde2ca06348774123bab7f116d22f8ac383d40ad5256d1ca1bc5e7f9129e. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/GBMA22423966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc886ee9a16a505d7506fd2aeebec7c751c6a4fd2d53ab96d6f70dffecda9f4. 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/QZFZ32390725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d81b4fd91f2d047ad7325191494fa7e2fc22cf7293fee0527fbb811749fb970. 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/GX53U2473533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747d49f6a89c93569bf54d7cf9335305b830a57fd2a12cf983d05e3db33c3f9d. 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/GX53U2474401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc6f742e7597b05041b340f7adff4563ec19616759532812b72fa2de14ba6b9. 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/GXF9Q2479231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd2d42572c9de41f4a88f6f4544dcb329683e1e289c18efcc08448018ccf893. 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/GXF9Q2479216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39461f8ce7eedfe35d6d7f54ce65b0cb4bad44155e016cd02d22b64d8f1a0e1b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/UKXN22549887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cff808a1ab8804696031e776130b69c8bdcaa1290c4db207fc8c71a9a67780. 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/UKXN22549886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e7bf7574df20169adc9a92410a36fe22bf716d9385d58dd5c1fda2a2592adf. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/UKXN22570872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a6deaa7f33b398b28499a1428062ae9440c442880f8ca2984ab45fb2f49215. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/UKXN22573283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529f821fda37f703500d250e4df7fd6eddf43b1cc56e01ed4d54403e8b8d0847. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:06:27Z), 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/GX3Q92530098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe988640e93378abe774ef00f0a92cceeb9ea03f553b676b780d6d4258d8c05a5. 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/QZWFR2542071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb8b301588112da5636f8afef2968c3669e92cb78b0e656ca20600930fc1688. 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/QZWFR2538977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90bdfcabc176b32f90feb014d57dbc5ad7d63dc1f4e87c21b5c64671835bfea. 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/QZWFR2521636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17559f3bff23252a81b932532242b8e3797f40433f927b8648a19d0baf1afe35. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZWFR2542093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfcf17f4a1dc73656cacfe443758fb57eceec4f9d2f1712008c2cadb9ef0a61c. 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/QZWFS2566228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660a90c4039f17dce84d875dd42e8708bb5223ee36d82b7dab81fee324b78114. 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/QZWFT2540576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae163852105747660bc04618bc1e9807588b9a1de3a0beb6037992d87dd7708. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZWFV2546340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe577c9653523ccc543e41a024ccf1d97e1261b11076c7ee14f2b9bd383947f37. 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/QZZ7Q2571521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2dc996355ad42531b6ffbc011a517bf159305d07f99cea22fb9994d287251f. 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/QT3F92532022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb32a72925ee3f582458fcc2572c510243ae7e32649771930d03760d49b8bfac. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QT3F92592412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496e382825998cc5cc410302568d7421fde58ad456ccc116e06e581f1f4b2883. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QT3F92528473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36c8410127d7b14198935fea264725c133d7e299b53d2d0ee151fdd581d6d3a. 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/QT3FB2509830.