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 0x5a28294bb4d05bd158cd54415a2e230f7fdcfaaca21641f5f948eb4d7e35f6ab. 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/98bd725f-b503-4a28-9c94-f8a15ac1ecc0.json and https://artists.proofprofile.net/proofs/artist/98bd725f-b503-4a28-9c94-f8a15ac1ecc0.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 0x1ce9d1b15464e5e188484d52e1743384905d6a9ebfc31abf353d1cdd680b689c. 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/GX4LG2100335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a69c28c2b81c1bdec6343249e954fcf7436c6fc4ac5ede557ad13baa1ff62a. 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/NLZ8V1800262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f20f24b4e76e20da67df2598b1251d9aed4832558be3b7ed68deabd3b543c66. 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/QZK6Q2151432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45708b1ad85d983122895c8534bde1994ea58ca8c9910696193724be024b7aa9. 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/QZFYZ1982301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a35620d3711232356c2bf8b3673b98a997bbf3ddc82ebaf7de4840c163ac32b. 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/QZNWY2214440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3beee9b05bccd27940073cfd3299b717179c7956238db17a59ea2f63a46a364b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBMA22446125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14bdc39537fca84496aa57f29e647dcf16bb5a62ca641dc616d2532f7b0efa55. 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/ZBABJ2400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eaf30ce35515736e781e598aac6f447e58d7e1211c9410905b81dcb823ac3e5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHN82445594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674e8f1f76f6395bb2e3c2414f6927cc7d1009575fb4c11ff14c99aa216e6c06. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/QZHN82445595.
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 0xc022c0c5de2f06f211f6819a8adccb1bf00695278e3d7e29aadd330ad9c84645. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/QZHN82445596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1ff9ffa2ea9f1326ed2ee9846d1a9a57d6367e9ed834fff800c993f2e48bed. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZHN82445597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee5ac00fd4beaccdfe12ba8274f8abed219a96aff7854b01df2e39ddf220822. 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/QZFYY2486536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a13f8a63ced7dd5f761230d5e1b6db56fd5d73df6ee539360e3adc158c9982d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZTB52303914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e94a8f59c53d830bfc5e989e4ab34143c0b23afcfde335398d912271a603753. 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/NLRD52271594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeca3ffc7ea8106cda42a02036a8846350db77f0a641eb0cb017b314eb544210. 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/QZNWY2130961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd5a8bb88da2d808c5292e14b684059776abb78763ac7524a77b7d35e59d901. 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/QZK6G2134894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de1a2094516ff39768a91d4eb73b4ae4cfaeb14f599dd22b19f4c4c12103e15. 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/QZHN72191226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5b29910f236771c3de34c0f689442afda1ecbd9aef4b1f120a3f7545e1a52e. 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/QZFYX2178875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ec6eea43e41fecd9db34281b0c8a7fae5aebc97928e6713b22bcc66fa33555. 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/QZFYX2178876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba76f66fd2698648630b5397b45cbdd3b46fd93141f5f67bafa7278888577f52. 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/QZFYX2178877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5247768a0dc280403e76ee86d600bca06b924ab65a212b1174335f6d516d8a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US83Z2401781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb3e543c87a8ee6b61d63462131bce29b2caf2735849dc5d31bd45d750cfaa9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NL8RL2419942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267eaeed402453a06eedd8b8bd62ecd1edcb7f16c97c3689994e38881866a407. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/NL8RL2419943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2dbb94993facc171e884eb1f5bfb1d865d9a93f75779c12c8e294b5101b691. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBKQU2468969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b8c27941e263a5d80275ac9dad05d0d1ed453b5190356b9bf83cb2fbe21d63. 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/ZBABJ2400015.
Broken Telephone - Sickluv Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46016bbba0570b567504814c9907c1d647bff9696b57e6cdda3dd3925133139. 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/GX4LG2100336.