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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b20c162b68fa01c27522becab5c4c30ce3c064d88668ac2182e6e48940fbec3. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/85b97167-387e-471c-80bc-0ec3a3d2f047.json and https://artists.proofprofile.net/proofs/artist/85b97167-387e-471c-80bc-0ec3a3d2f047.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784d1771e68b09a7a2e2c8b3bc6e68754530df389c80eca6cccc90cb3d0f2cc3. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/USUYG1536502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe936e00917fec807732130dee2eb17235d363ea9d79b5fb81a5655e8a5d04bb9. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/USUYG1536504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816b3f6dd582f0253eb7aae03e1a11b59da33a28db7907ca3dddbf153cfbf660. 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/QZFZ42546869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56330348cc0709ad4f68865ea6d4a9f9c7c46c14df6164b6a0d43459d5103521. 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/QZFZ42546870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f1ab691979b5ee89bd335ef54bde276a9b1bf9860d41a4f8b5adb27b97ac57. 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/QZFZ42546871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be22e776a5500884ffc5895b4f151770a8c016fb73fded88afa9be255071cda. 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/QZFZ42546872.
Through The Booth, I Rep The Holy Spirit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2bbece0d79796c1c22df2f1c421336f95eee7d02f52212150d960dbf6e9f4b. 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/QZFZ42546873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20ba9e21ee31409d5637f0032f538e030696983f528341b70ad3f0cf0c7f2bf. 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/QZFZ42546874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752079b19ed122effb879c5d288f1683aae85bf66bebd07ff0f466ded4feaf42. 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/QZFZ42546875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4cfa3c15f5e9943258824ce40a713a61d65dbb9cea9fa96837da7502fc00de. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/QZFZ42546876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c70bf1aa3843e191e81a56101dd56b34b9672de022da1198a4c2e9190125a3. 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/QZFZ42546877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b68ca3f59ec8c6354fcc04cc9d5078d06dbbedc41638f6fe4039c5efe67052. 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/QZFZ42546878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf6220be727985df346894bab3fad7d60920e559f420e6abc05f484c002995c. 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/QZNWU2434010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72520ada631dc1adb570a40be15ca2f91e4b29a4f1d23e5aecee9103bd88ea16. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZNWU2434011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7635d1c0f41ed0288e086c59837e6721b25aadcbe1df82bb792d224312e8a972. 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/QZNWU2434012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c9995a63894b464665f344f1317f027e569cdbcfec1a2c06b197d3e7ec1f64b. 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/QZNWU2434013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc9fa1f446733999a82b081991a45f9752b2ac53280d5d2286ba9c1fc22be37. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZNWU2434014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df936a6e3b50a19de35053d3bbfd346e83da78c4bb67c8102f783e8af92c6e3. 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/QZNWU2434015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c2e42bc69e64eedc978690ec05cc9ecf8b79068832bb2185b7d1c0ee31346f. 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/QZNWU2434016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1899d02d1d6120a5cd47c827d12f64caa4088b907073ba58b705c0b13368c660. 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/QZNWU2434017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d2f9a0d767c077028bef0b41b3f33a1847af3038c3c08fd28f74e5168900a7. 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/QZDA42542916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a57d3f0b7970cc2f9c4f6aa324853b993c0caca565ea713f6aa36a0942937a. 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/QZZ772400653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7ee7c6303ebc2a522eb9f4d96d7dfc6a5a92cb2e537fa5d1d52ea33a60ffb2. 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/QZWFE2453430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf6728150a1287b2fd40533d88c983d78bd5c4cb7ad94cd49f6fcca7c34afc5. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QZPLR2444281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4deaf64fb2a25ef16f9ead0614b1d72e2621fe3bc6919970b1ab8280373efeaf. 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/QZNWQ2471755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e0066ae70c7bd60511e9acb12b541251ea99fc119b6652e1fc5a8ae0c755fb. 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/QZHNA2473376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf598463e0f8e0e563edb4c95cf6db623530836ea975343b079dc8c55950b2d3. 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/QZHNA2493770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb611454145e3979f8f66d97bb240c4530f01c8fd36ba7642fb93a0426a026c0. 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/QZHN82494991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ecd2acbc5c49a634975ea33348a0ebd1288016037b544bd0a1098d9dd157381. 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/QZHN32478326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80f98fac38079c0385b47b2750129a9d2312c54ee41da108e0ef0b15037377b. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QZES82458400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc7b127eb696c7fd4b8ee524192f39da9a58f3065313952716015cd1a72f0bf. 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/QZDA72474014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a08d38d2b6cb4099f91fc5178e72e1a1ac4cb5d02f890fcea8d9b2c419d3be. 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/QZFZ62491769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d7663acaa9481f2a74860ddb4f49cb627a681ab75178fbd5998cda6ad38dac. 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/QZFYX2460299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc79510923047763a2837c8e838585ee694a31e1d1ccb204c95cd38d1158880. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/TCAJE2590183.