1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x77f799441fae5b0587920d00660bf3153ad05993760078b6765ad89b6e8af2d9. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/faabe905-ae8c-411a-8e7e-8ccd9df61701.json and https://artists.proofprofile.net/proofs/artist/faabe905-ae8c-411a-8e7e-8ccd9df61701.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 → block OTSBitcoinBlock must exist at that height 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 0x26e29c13783315e8949a69910dc502f69658bd0a25a9d740e2c7d84df8c27916. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NODLG0701030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f1b7bfb4ee89b1be1a8abff69f6ceb39b92947eac3b17ebe7e78c3e14ed62e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:39:31Z), 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/DEKM51304202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b776efd605a38d81a4dae9883f11ed4a6a6d271a1cfadde8c0bcd6cf9236da. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/DEKM51304011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae87fe5da6429554f61aae749ce2813988fb7f0a44eca285fc774e8adc0a597. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/NODLG1501010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31317f717c9a7260f3c08ec2e5fb6603f4f4cbe5f0df9f0b4c826f2993457962. 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/NODLG1501020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f222aa3b89c281876326ee038b5c513753d8ccc5a95a12d8242b52dc76daf7. 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/NODLG1501030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b7cba3f1157db0ea9b6ab2d7b06b473fc99d81091870f055e812b66ba38fa7. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/NOCTN1610015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4ea41d262efb92e5b5d56ef1ad17609ab7cb8adf972baf96812fb7dc20bcb3. 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/NOCTN1610016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e0fab767f7a6e78ccbf6ff5a76bf817ec566ed5e5dc43d1acb14cc1080ce11. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/NOCTN1610017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d507c6b223a80eda8cd82d081e51448374099ecf504ad8fe1dc3d8d4e28ca8. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/NOCTN1610020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80f5d71673190d70bc3d5187d6a4cc0a57af686baa09ca2e8af7681479ba1b9. 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/NOCTN1610021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae87fe5da6429554f61aae749ce2813988fb7f0a44eca285fc774e8adc0a597. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:56:44Z), 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/NODLG1501010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31317f717c9a7260f3c08ec2e5fb6603f4f4cbe5f0df9f0b4c826f2993457962. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:50:37Z), 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/NODLG1501020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec8191cc54be3e98a656d3d2e5390f1d98efbd0e2dbc959a492ff2f70648088. 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/NODLG1501090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458adc0e8615738cf3cf2941a9e387d1302d83636470e8f028f2c5eff396b240. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/NODLG1708020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0703f495c406937423f855f3edabb5c9a767e69bbd6e2b1a8f471b3f575726. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/NODLG1708040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f875c18b3278b51564f89fa6033a4dd28500b4c364043fafad768f2835644b3. 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/NODLG1708060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6567482cbb64513122f00aa7a108676f6038dca54677353e415a9f28804584c3. 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/NODLG1708090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec60650da4cc266b443518143c408a24730a3b008d236fa7d77415fa0c0b2e0f. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:02:09Z), 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/NODLG1924010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa7f79589d8ae69aa2c150f5dcee0d92a744bab337ec92b1536038d62725e8b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/NODLG1924020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a6ae9c49e6ce278a13706a7c5e08f7f2d712d82f4fe18cd5d4e7003800e9af. 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/NODLG2006020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c524aa53c64d784bd11e16c50adf5f89f22a2b439966f0d14e56cca7dd77f1. Chain 2 (Bitcoin): anchored in block 956426 (2026-07-17T08:59:37Z), 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/NODLG2010010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025a3eea23b7745dc901a7a03ae7ec2eece9d3bd43d95609ada1be593af3e6f7. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/NODLG2101050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c91f8ed09c02402f524c8d21da4907b33bf41593384e72ded873044414a03c. 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/NODLG2101060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6444e0263accfbe36e516930afe3893cc53a613431e2d927f637fbb7be80bb. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NODLG2101070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228c831b3097ff2c2103dd60f208ff1d02b176048a38e084eff7e3f2066be10f. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/NODLG1801030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc374598ded9a8e4b5468b41491d0cc851642cd85d9ecca5f525a1c193d05504c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/NODLG2101080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2477c6dea40e63b34c19fa1782287dd34948a9f9ba26dfdcd1dc341af5c9d1. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/NODLG2101090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7317fb66632694adf48b7951ca8acaed504ff80e1af9fbd3caa69cd6bd14990. 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/NODLG2101120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc3b2a9e1f718675e7bd062e052534c6e672c0f07fa7238c5c7f514bacdf4b6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/NODLG2101220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37757221430e1947356b33d64a8313db845e30c5329a00389d5d91d3cf72def. 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/NODLG2201020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a354fdbbc94e2c21d606979bc6c614632a4fe318830abc86fd14556ceac888c. 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/NODLG2201050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5371e6d2d4ed63bf4428535eca0474817157116c0720ad138badce401422dd2. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/NODLG2201070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bfc104ae9258ccb742da67a06f49d7ab2cd877184155e6b3b78de0ad158e2d6. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/NODLG2201060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a543bdb94aaff491151063dca1f4d23eecc32af7d143b2e5c7d6ef66f2ffc0. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/NODLG2201090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00027e2b8510675cf392b82d4dce738e24157add482be8fc2eafa97630d46dc0. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:13:26Z), 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/NODLG2201110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb215bbf7695511b6c6179178589ddfa0febf3655f72ec30dbd635a93e5f229eb. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:17:28Z), 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/NODLG2201120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb72fa85fb0a24ad33cb5692b431af309a784b12f8174274f227a950a94488a8. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:16:36Z), 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/NODLG2201130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d8ed2dbaa4b35b578b693a5020c7c5cbb60b596f24dda66dc1b906203fc836. 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/NODLG2201030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20a1c4ff33c1d76498e62d478801b7ee3590fb2f1a929f7805875fda399a271. 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/NOQV41705090.