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 0x74a60e2122fba8fcb0a54353911a979577bfa2ce7ae6c86225ceb59c7d6cfa08. 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/0363c984-0c79-463d-a96a-5c7683fec944.json and https://artists.proofprofile.net/proofs/artist/0363c984-0c79-463d-a96a-5c7683fec944.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 0xaf9f9d89f46c1b24330106d7c9093e232113fff497dfe2bb343f83748d50326f. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QZTAX2275026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f5bf84cb96e1ba6ca8118ebc3f86f87a29b6b7de74390de48e0040796e9a40. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZDA82358818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10bd9640581316cea6325fe903a10cb1f83b9865790bd46bce0558e3590a109. 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/QZHN92372022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49653e239bf62ce0072f553d987ec184a262de95736cacfb081b168d3cf9f37f. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:06:31Z), 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/QZTAZ2324065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e5f450db960836c5538dca1b2f683e493c3a124aa9a3651c7e177d2fe246f9. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZTAZ2324066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a2d005bccb5a8227e349240eb5136c9335e9dfdf9ab4c58b3fb0288f657a0d. 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/QZTAZ2324067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca799b5217a907b01e524c1b77fb499d0be40596934d7a74bb0829a48894a8e5. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTB82320501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0783ec65edc57f1903ede4255d6f6b706640a1cbd4c2755d8d9f08ef1de11ac9. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZTB82337362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe402974721c45b704b9f3e69e75f0d4e0be476d3472ad6d3ea00a415241b9efc. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:34:37Z), 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/QZTBB2373393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893185a790ddd37bca219b1aac31040d736782bae750b00fc526938f251d6cf9. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QZWFP2356768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f84e213ee180fd94b8c0e5bf01ae350aeb58922df3a27ccc734b0e3a9233b4f. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:26:01Z), 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/QZWFR2324036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266c273d1aad1862fc29b68bc8d10053c3488f52e25dc236b3072cdbf2b0a306. 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/QZFZ32425377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca75a16b31128b14fe5fa36952c8e34f552f3a3469c428b7c78d5e9c7dbefa1c. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZDA42475616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aba75009c2e7ce2c74f5ed27cda32574898b780730d97aa4f3fdf9b653abf32. 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/QZES62473719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7119cae5057e2a063870d32685fac4f637fbcb8980a9cc22fd9df92d11f593. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZK6Q2468816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21f26e6be5fae7695973dc135d0481ffc5a2020e54fecaac37df2bb5b5cfc26. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:53:50Z), 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/QZK6K2412960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a75338e4fc793af70b5eaeeb7b1566eba095fcb2e1a7be73f194eb7fc33254c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZK6K2464335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc951a43e52beb14a66ad54a22a16ebfe85e1d53614ec41d25038628fe075f7b5. 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/QZK6K2464336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc871d1f8b0422921d49ccd4c9a41783f2ec2a18b8a56c9f1007efc07800a0366. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:56:51Z), 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/QZFZ32403260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0af80ae54dd23a54bb07839abda44e8817a3dce5fcda622f061d1e122c40a91. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:41:33Z), 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/QZTAZ2451643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71fddd29033ecfa764626c9217f27957cf42713e8a0adf3cee55c41ecc610ae5. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZTB62414002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d6b37f45ec47ecd4bcc3426773069698e0804bcca75f1692aa762427c6a426. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZTB62414003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2480e0936d44f67b67db3301d9da29c16c097a0fd8c89fb2d242ecbefb15d49c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZTB62414004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632910c4ff99da39267f3fe7644bfa0ff42b5cef1df3ab5a37525f32bc2241a1. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:44:09Z), 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/QZTB62414006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe276b597904b633c5ee0cca385e07430e07c02d2368a515f0a95c1c1240f07. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:08:06Z), 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/QZWFH2489689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2e3be30238d48aaf1048a5181bbd626c4124a51325600413ea0740328a81ba. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZWFH2489690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba788ebea030263ac4e3436bdb1da2221e94bb2caa34f59935f60de6209c0fd9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZWFH2476410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02fcfac95608d0638cd27b07e559dbd3bad28436fe665c27c75b1c7fc4e0861. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZWFH2476408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7291be11739c1810eca0440790881e659fb07379a7ce523bcc3f6712c8c0d6d8. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:26:13Z), 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/QZWFK2410439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c633fc7e2e829e194ed6605ba60e26ac23e7a42991f7fc8d304f2773276017. 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/QZMEP2548028.