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 0x62821a24585d3b010f01d6e9e0dfda7d5584683cdfd84c87e86babdadacf1ea2. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fdd3f8d8-61e0-4bcf-b2ae-6f99f64414df.json and https://artists.proofprofile.net/proofs/artist/fdd3f8d8-61e0-4bcf-b2ae-6f99f64414df.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 0x47c2f79bb1a86c8250ea50a6c90e28f602e10bbb2c73ca306c1932b3a3ec565e. 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/SEVVF1801901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef83e6836e30a68dc4eca467eaa8d0426c30c5f1fb577097da110f20c5c6173. 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/SEVVF1801902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad997c7840b9dfc05f489f42623e31cf26731aa92d784c51cb6535536ff7fdf4. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/SEVVF1801903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd31b0c073e09d0d720c62c3721296e63a58c29bcf4cd959a7607a04b1df91cf. 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/SEVVF1801904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203b7b9ac907f12dc475b90d5ab155597d42342c5a7ede150eb6b6f6ed9d620a. 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/SEVVF1801905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3565a76503e0cba20a6dd8f22b6b3044c5cf1c70dcd1663def0b44539b42b870. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/SEVVF1801906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd904997df7df5782392284c3f156a446776a7056da4b4784ae0a95c19ffadec9. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/SEVVF1801907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78f717d731b523ab33495e8665f6e7afce2a679c0f673cbed32412b1d89f32f. 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/SEVVF1801908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6afa3f46266621ebd1e1829f1fdbf3f6ec13e9bd59996c843e86d709bc6c3732. 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/SEVVF1801909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4388d3420be9fa234a1095d626e51f464fbb46726535783874e3abc9c86996e. 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/SEVVF1801910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf447edd2b46ea5e3b0849252b4aae6ef0b5b9ae15a6de3539fd3ecc4d27920b8. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/SEVVF1801911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326b14a7f08e925fccfa34b3ddfaa8912d82f0d1f3c1bb0068364869ada173fa. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/SEVVF1703901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dbbc07bf3b3f43696646ffca93a2e142786ff8fcc66d1bec8943df4f51673cb. 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/SEVVF1703902.
Selfdeceiver (The Purest of Hate) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb27bca463571ddace1bf7021fa3dfd64eeacc894b7bd9a30e5fa0eee72d3d5c. 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/SEVVF1703903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b63ab8cc5ac74ca962d7c63202c3deaad06f30d916e669f2ad8cb924fa960b9. 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/SEVVF1703904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048196e3a6ae80bbe13fefeb3284cc31b22358fe5d6abc0a9cbd5af56ed0e1fc. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/SEVVF1703906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ce11a7b1ddbdb43e5631c59bfa8b9192466cd05fba7da101b7221232d4bab9. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/SEVVF1703910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa028357d366136798b4be8068d21b58405f7799a074d79dbe85f464456d39dc5. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/SEUM71502003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ecd361e4d61ae67e05271b95d292d8fb4db43623e55458132ba5251e270eb6. 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/SEUM71502004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b30711c8882bf4f7ccdf7eee7a013f6c49e01424c64440823e503f819256ce. 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/SEUM71502005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab792cac0fa60da3a1ec21289330330d018f40321fd8215d4b55fbb8920167bc. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/SEUM71502006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4578c27175f56bd19d7eb735986c0bf114334c7142a962e709f0a395b13cb7. 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/SEUM71600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c9e50cff8b9b4426ea739e422eab0c17d0ccef5b7d0c9ec07a62fddc4b0a0a. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/SEUM71600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde72ed6a3b3fe53ca4ef7ba36696694a33bd5e40bfb8f21df609a89c68c8bd38. 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/SEUM71600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe766d5d652b691c283e1c47b3db57f3d1a2f416f9ba91e60d08112193266531c. 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/SEUM71600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975d43df384588d5ae2526d8d126e9f6ed07f67076b6fe27f62541c5e847e2c1. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/SEUM71600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b404c4463ceb4feca3e2f7e083b64ae658523fda68d736a7e8f887bcd4d0bf4. 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/SEUM71501963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853226cb59552099f840934fd66176059f6cd1fbacfe1bf1fa5d157e7dc8ae9b. 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/SEUM71501964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c71b311d1cfd22da28d4f8ccab41ff263432c95ac7908f7d32e1ffd3d14b5d8. 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/SEUM71501965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca15c1ca75994aba9d567efecd28b2dd409c0339231554bb56cc25d6b49b3ce. 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/SEUM71501966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac03412539e2bd6234eb53f5be683f714d037bef1810ffc948e773dd2482d54. 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/SEUM71501967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875a534a706129024073375dbe625c26c279962631da08382c83856b62d21a77. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SEUM71501968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43aa253262f9420257ff1295d22c5ef9e002df19c609698cc7147e2f36a50379. 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/SEUM71501983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04692bb214c7e997f6f399cb3da93c34457047bdd47986d4bf1d4c4c45c04211. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SEUM71502000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d2bff42ed0f8be14817635eee2bde9796d62e11b0a7df5bfa4549b67cb1e92. 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/SEUM71502002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded5de21e20c3f0fdd9ed5d4859bb7d9722390ef61144320ff8fa13176bfa823. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/SEYOK1701301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfcefcf125a2c6cee10af3bad493d9103a0f5edbe0962b5c13f40851ab20e832. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/SEYOK1701302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8cac293ee5ca10534b331e5e53da5202d21734eea2e22566e1f46dd1780384. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/SEYOK1701303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef779dee0e35353c646375b27e3cc3eaf77c707a1f1b0fbdc565fda5f99fce4. 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/SEYOK1701304.