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 0x5ce047c295a56519a8e2f82e1dfb422ec2ec42958ce48f1bfe9464f6819681d0. 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/d6c44fc7-5612-43d8-86d7-73c9042a3c99.json and https://artists.proofprofile.net/proofs/artist/d6c44fc7-5612-43d8-86d7-73c9042a3c99.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 0x96bc9e0a409d4cd5c70d88a1344b69290bb619b54e22f7acfd4aa744f3ed76e4. 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/QM5LC2200408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce31b99d2f893358e97926d34c39ae9efaa1051109caa9458f5e9ed00733ec0d. 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/QM5LC2200496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11cd78fc71a5cff177c3090319dbdfc9caf599d784531086fa7ba0f17dae905b. 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/QM5LC2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c66048b39adea614fcf4d0c03626e70bfce71d56798930935fa56d43853661c. 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/AMA0H2400125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe989d952899f70cd2d5e7caa7e45b2c682e4c1d08517140116d2bab5661f79f2. 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/RUAGV2401130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4110999c884118e1ae209cff184379182322ac3130858e2e00439b927d47aa7. 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/QZMHL2481530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f93337e12c8e31f6ead1aed78c548545ef246b2b7e52d18fb0901d9363c9c9. 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/FR10S2472445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9c13ff63de72f0f21bbdf17138d6083c89821cfbbceedd09a98898d2a17093. 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/GB8KE2326520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72311b7b08fd10bfc88db1fd1f68be13ae794f0c90d4310d413b555c2ed71560. 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/GB8KE2321415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636dd6b893230f232226fe8eb2df05920114ebaaca7e1f2393679642c9bd76be. 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/QM5LC2300143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8de6a116546a54d0525afb877791eda71c4e696aa95a2ce7675085bc25a43e7. 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/FR96X2381636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd791071914fe5f921ff749846ef84301e4887b34a00d1965d237b1d6f27deed. 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/GB8KE2210265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa750ae4804e4bb91056907bbfc84d62d14b7e67ce5beef0d87b937fa7d722dd5. 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/GB8KE2207781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22251fd71823d82975d905935fa8b4442face663651cfbbb63a75a1dedf61f5. 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/GB8KE2163128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16448ffe362ef51a3d5c4b044bec252c69c99a9bbc703b17477955c5dc289fe6. 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/GB8KE2155707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3924f282ba691c51ac858e28ecb8751a2fb6de664209c6feb254f0a9b29ac913. 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/USZUT2100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1a1d7e41b8cf69c93f99a5387786c7f408e87f887cebf870c627c8a6f82723. 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/GB8KE2151525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03398c92f129ea92cb2f0b8e9c7276eeeb6478efc2560e53acb6665781a4e26d. 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/GB8KE2056856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22519248d30bce3fd13237b8bbb2735ae93150090fa47fe58ecf20c3a998198a. 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/GB8KE2056857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408af5580d46440ae16e8cd886705849fd4f8987114edcd25c0819901b4ee293. 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/QM5LC2000415.
Abyss (Gancher & Ruin Remix) - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca517a2e08e55192f369b242da90410555b3f291d8b0da44219153f344afb798. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QM5LC2000417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d84cfad16186980aea77f8f526a8bae7278efaed08543f7635590144bd62051. 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/GB8KE1958945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50fee98cf1a6a783135b3b4f099813b9a32a7dfeb51a8ca1ada7141e67b11b88. 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/NLCK41065461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a54e2d0e3293db039f4f61814e312a047abf0660ffcc164fcece07dc41f9c6b. 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/GB8KE1955582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07af67e8e6cd1d62d381bcbf3e2917468ea2c72c5d628e35cc2b38415760501c. 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/DGA0M2409436.