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 0x6d72163f110d735c0b93c7ff756382359e1749a00d24c1a03bba07aa63c50163. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/66d72c92-69b6-42e6-9647-0140d34034fb.json and https://artists.proofprofile.net/proofs/artist/66d72c92-69b6-42e6-9647-0140d34034fb.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 0x406b0a75f988eaa7f6e0dadb358a877a478a459ea60a3aeebf8bfc56857ed737. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/DED831900096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f8aa34364ab47cbf73aa042f0beb95bef607314748b3c88828e011341fc7ae. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/DED831900098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c90d19a2c7f98f46a8d57198c626f14bc5bd72173fb26f90da4b82683d2a757. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DED831901081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeef7fce7ac971232ac118e8bf397326222b1eddcf8933956f532336fbaa9ca1. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/DED831901082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc53fb8c85e3e26a9fcf484afa42312f5cedef1188586fcac2f2ecfd3983a8d. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/DED831901083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae770415b5b875fbb87174bfc5818b15abdfae628b1dc5dd75260275063a3fc6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DED831901084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fcdd3c809411b217ac10ebe6786b04cbe68c58f67a99c616210a63604bc8367. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/DED831901085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627a111350ef2ba0a4308b4daa41114316b99b2d159301d755748e48ffe1a76b. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/DED832000339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2905fc69f63dbe343f8759f3e00c588071dea56125afd7732175b731d34eba. 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/DED832001284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cddd52245a0a4b9f68fde68b038d41676a257529600643a86e04b87da433481. 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/DED832001286.
Hell Is Where The Heart Is, Pt. II: Longing
Hell Is Where The Heart Is, Pt. III: Clarity
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a0ead4d7382b8a28dff6fd02f3023114c70b743ca985ed994149798af98a93. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T21:24:46Z), 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/DED832100721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b52d9f76f279311739ee9477334638f11ea1934369cbc74c4834ca3814c74f. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/DED832100712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534a9565973935fbd11211d44b0f3d1330dadd11ab827061aeadfb0753f468d1. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DED832100713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc149e758a5870a8d42ea93a619415484038d5ff7c1ac61e2de7218592218c4. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/DED832100716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeded6016e3ca200e2fffa392ab65abc22cd462a2164a42e4a3abeafa152ae003. 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/DED832100717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a0ead4d7382b8a28dff6fd02f3023114c70b743ca985ed994149798af98a93. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/DED832100721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c9dee9b5dc341f794c1d39d8069c479fb91cc0d2f1b1d83428dfb71274c182f. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/DED832300426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40910867440776ef1ae735ba4225b20d1c209ef9003de9f9e1ba9baccd6fac5f. 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/DED832300818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850201ec1d9e24212e35c14b31e89a0fcb94532d4706bd2dc781abd0e07f1f33. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/DED832400236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19fa177b087276d4984ebe8c1b050454d09c35a306e4557593df36554aaf5dc. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DED832400237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351aca6de10a87332c1fbcd8c56780e3c83c11845f190803abea52cbdb98f67e. 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/DED832400238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d6c39000cbf1ff6139aa94d14610d99d644ac4e7b6a9b78db337fa08f747b7. 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/DED832400239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f5e3d3a4f12d278318e61691c44892328f6c86e8f78eea743c8a183adf68cb. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/DED832400240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f6a7f2aa6db19b0f8296449fc08aa43a1e6bd1cb140bd50bde1d34b6a46971. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/DED832400241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7654832775df6e6ba1094b100f369f69f58d959fa8db503e83cd9236f8a59d61. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/DED832300817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40910867440776ef1ae735ba4225b20d1c209ef9003de9f9e1ba9baccd6fac5f. 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/DED832300818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd945d45cb02ff3f7f945157810e930d1275663fae112302cde94eea35437de. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/DED832400243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ea159ce12a19a3b72a105736b007f406c5b078b9e8bf06647e49b42654c887. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/DED832400244.