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 0xd77ce6d3d82312fa48d25d36b56c3ac2b9e727865f86b833b6834f227d5ead8f. 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/095afa1f-d92a-442f-8bf6-db31172e6e46.json and https://artists.proofprofile.net/proofs/artist/095afa1f-d92a-442f-8bf6-db31172e6e46.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 0xac08449a046becde2e14bbc63ff2060944e30a5465428e381b2ad94906b87d55. 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/FR9W12310772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeefd8410e49c77878b597eee9bf41a0032cb45d92b79dba0c2206087847aff3. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRPZ92347360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f4f072115849f070493bae38ef89983b7b8f8a8f7b41fca0067f25b901c1f6. 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/FRPZ92347370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd059b3473f423bc7a94bf626fc4a672f4459a8ae8d4c8e16190b94143f21e4. 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/FRPZ92347380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f7984ab1b94774fec350154c5370345c23fe43a8b287624dd9e074e1e28b8e. 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/FRPZ92347350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6626f0b1f0a27561cd4f31f42bcdf86c34fd4991c58892759317bd99ff2fb7b3. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/FRPZ92347400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17a55ce8127dcb598b524fea6d9c06f67255c26088af42491472ed8d7527a7e. 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/FRPZ92347410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e2fffbedf50f3e85017392375047d23d8e565fbb6547dabcb98bf8b6884499. 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/FRPZ92347390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c04b35dc8156f58c0aee47403bd3709412c0f6c71b06a85314ec9e167fedd0. 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/FRPZ92347440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08bcc487994ba66e254cbc14e1a11bcfbcd35acd1808e8c306d1aaa55e81ffc. 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/FRPZ92338830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02376d638b1df6a1ecb166fe7c45f40d561f6b917b8773676a42209a52d5f04a. 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/FRPZ92318930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888bb7947428fc9b3a7d83497784e83f16b12349c84e6eecc3c16313db49bea2. 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/FRPZ92319220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f18a968c8bdba9221a72567b850a19e474bd300f3b39a5513b3a3498228770. 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/FRPZ92318950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d6221196aeef60db1fe9da66f52c3b61a3b85cb64a29d401d52d8cc50861e7. 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/FRPZ92318970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a57af9bb2dfccbeac44f457efe839aa5cb2644a4df724c0ff42ac9e93dde2de. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRPZ92303980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd93a874e84dce05b2045ff3dc5eeec8034979545b1d3ab6e06fe4d2a3c2335b7. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/FRPZ92318980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73dd8f7bde1a8b95cf5b036f7f51c7b33ece9ef9b75726230d16bd607f65e62. 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/FRPZ92316880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6d03661b1155cbadf8d1ae179c3c1f2f861f16807a707874e206e0ee4b0375. 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/FRPZ92318940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61ca9f59ad07aff32a76ba36a61706017a86a1b62a15b208f79bd142bd6d782. 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/FRPZ92318960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e78b0716cf9a9db6bf92dbbd369ddf1678033da1ca102e0ea1acc05218f2f03. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FRPZ92414920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6993ca6eb6a94a77800166b15ecdded53a52b3662f59bbe339ff12692b93adda. 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/FRPZ92415040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b17758ff142d79d4011e434b6f31372f34c7fa9d845830572a37368fe124d4. 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/FRPZ92415060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b17758ff142d79d4011e434b6f31372f34c7fa9d845830572a37368fe124d4. 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/FRPZ92415060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e78b0716cf9a9db6bf92dbbd369ddf1678033da1ca102e0ea1acc05218f2f03. 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/FRPZ92414920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f7984ab1b94774fec350154c5370345c23fe43a8b287624dd9e074e1e28b8e. 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/FRPZ92347350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08bcc487994ba66e254cbc14e1a11bcfbcd35acd1808e8c306d1aaa55e81ffc. 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/FRPZ92338830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafbe52dd4830d48944d9a3a7c0c253c28e15362881324e2dba91c050c8cc5d40. 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/FRPZ92328740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb06ca1edda4475788db2f65aa87627aa7be2eeac9debf0e9ae35d9be5c8277. 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/FRPZ92319230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73dd8f7bde1a8b95cf5b036f7f51c7b33ece9ef9b75726230d16bd607f65e62. 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/FRPZ92316880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1981fb9288e0649145e3c91d02d6de42324c7ec2b8fbd1994adf99042f2a6014. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRPZ92312590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f806aec00dc002e109fe486f9ac9b2c6c40d91c8857d18d7164b27e750bde7. 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/FR9W12308915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a57af9bb2dfccbeac44f457efe839aa5cb2644a4df724c0ff42ac9e93dde2de. 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/FRPZ92303980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd41391f1bb03b44d34196a9071f543405ea275f6ba9976f5a2fe53043474e94. 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/FRPZ92224760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6cd5189d4acf38d999c8daa8ac9bc86d51c509345185552c7b7f97fe0aaaf59. 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/USZXT2250318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8bb7da96b74332cef731f34bad5e7a00d3103f2bdd4cf412f3695b618b4e6e5. 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/FRPZ92215700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a3afd0da0c58a6f7e11b82dda7f9a910e2c24ad916e1e6dc3a6852d7055c70. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRPZ92211110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6560b93df48d2b940770f5faf60a4242151e80b0faa620417f3176ff0400379. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHN32207277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7850f0ce270cdeb33e78ba3f4ac03f545aaaca6448a81f1bb7d04c558ae35c31. 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/QZDA82191747.