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 0xbf86695ddb801e91a55f04fb67f52394b91a44995dec1bfc79dd78ff8f8f4baa. 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/ece59dc1-fbf7-432f-ba92-eec50cfaf567.json and https://artists.proofprofile.net/proofs/artist/ece59dc1-fbf7-432f-ba92-eec50cfaf567.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 0xd776493c19b4c1f75c148f77221210e441de631a75deb73621557dff2767c7bf. 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/SE6XW2304523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb02ba76d578e683a870604199a8a13fdcf462f71580b67d3329801290ae1c45. 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/NOQRA2167020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c2af79257c059511d343000852d747d4c7e4559fa16e2630e71268ba663e48. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NOQRA2269040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5583f79f3604b5bd62adaabe746e12f29b90fa83f3b0039bd97bb63af87c0acd. 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/QZHN32469560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16581c5be7f8fbd10c55d39fdfa3103c07f8ea3fb051c5369caecdcfc98e3f10. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZDA62468653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a09dd7946602f1b935811f37eee10df6dfceacc762a0fc6da7498316b1d67b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SE5XG2405626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c6f82b239322ec4507a0adf97e420ec3d9b554edc79479d255bf83ee7c005e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZFZ62417918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8a5d0f0f6ba5b351e1e7ec2bb1e75ebb9c51c559255703688a55f25ef8e40e. 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/QZFZ22414562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a6774ffd07c72da2ea720745fe4e0973777a15e2888a58ad358bb1299e3e1b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZWFQ2302535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3708e46818a05d25b1d9acc1a7774b9a55c8784026fb2687ee9d3e349292db. 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/QZFYX2479524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40b208fcb58212592dbca56358c8d9eb91d38c0eeb546e949bff0a631e9449d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZFYY2441070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859a1665292ed1c3cfc3ba742b422473f9ea2ae5bb1037a01879e509927b8642. 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/QZWFM2350522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158b108cd9f69f486442be9e2da87b07a104bc221dad74a2847316b2876f2353. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZWFK2334785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dbb7cacae1b5f3b247997071d05a5c74a13bffd341b11f38acb01564da00547. 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/QZWFH2329896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57df61b9fb7e5dc1427c9aa19d0a7a8e97ee4e8756155ca29fac445ac998d57d. 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/QZWFG2330219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcce0982dc00e644930c67b41a9a273ddad9e4fe41756546638d767b6125fec6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE6TI2376192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44687faa41670ad4acc09fa4e56ffdf0f396b6ba6383c89f833f4b39adca091. 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/NOQRA2385190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6bdd235dae3fa3b8628b43f3485cbf343117aee34d4d865d0d75a5a537d38a3. 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/NOQRA2384180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1137fb48678d909cdf7314e1404ae30aae17b0bd9f54e0ca6ad52312fa0c0a65. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NOQRA2383170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f6911c91417b8e33693ffb7c2ee6317945211ad2f75cb486a58a9c97a031cb. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/NOQRA2382160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57c3ffe302b73ac160dbd44b595588e4e51cb2730150eb7c23b71f4f38ed44c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NOQRA2381150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb4fccb4268cf30c1fbf10d6efb49512337bb5b87827da50e7dc1ddf99511f0. 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/NOQRA2279130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf85e842471b97ae22128b2b765d03afc35e9d4e42deb70711ffcd040a3af90. 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/NOQRA2278120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf842f4017dd5437d1d52e7b096a17b0966d29f344c81bce1356857e2d48a1e33. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NOQRA2277110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086c212ec1e6a1e1c6d6c2dfb733c916d840642bf6cf8e862c9f2f2d0bca37e6. 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/NOQRA2275090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d24ecd0390c09673ba5af962e5402a28ccdacf3d6a0fab177a56f26de46aed4. 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/NOQRA2274080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe2584f44f2827fd4f745d7a63da2b01bd93a1b1ed4f5deb2e9831d43babc86. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NOQRA2273070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d757736fe13a0a9976e2ccd173d0887ffcdf32291f0fc254c054746672f163. 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/NOQRA2272060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8bedabd1cd1da34787cc8f8ad42e00b3bb567f1604fa1f5af877e164b8803f5. 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/NOQRA2270050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a61110088c3b024d075a74f553d7b71ca3860a40da56b0af11d9409e6a36688. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NOQRA2268031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca50ddf01da0bbc8ad76f42625b5bda06cd64d122f96a58cda48ab560bc20db. 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/NOQRA2268032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe138fa37c03610f872a3f03ef8f40e451969909d002edf3290f4dbdf3ea2c997. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NOQRA2268030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb1ee4fa868d18322de7188a766dd8bf504ba5262d22fb861f9d694c3e4cf87. 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/NOQRA2166010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd1449599f11a4262af51ba3072a930ca87814cea852d7b9aaa106c3a0f6746. 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/QZNWS2171935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d8185c4f37d1f0bfd502b7a211fc051c0ff7c084589f5db0fe2bf957c81c86. 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/TCAFU2108645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4a68276495f3bb2967f30f72a38bbc69ef2c2fccff807334838d079440a63b. 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/QZMEQ2168841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ddc0da52c3dafbe30b654e132e650d030d1fee06b68d7b1ccbb13d3c368357. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHN72474922.