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 0x37c42043c130e9570549f3027df757a9a074663786595cdbc1122d177b62e7ae. 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/fc93b3d3-ccbc-4911-ba87-0dc8bd5f8067.json and https://artists.proofprofile.net/proofs/artist/fc93b3d3-ccbc-4911-ba87-0dc8bd5f8067.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 0x9e29e81a4413034edb2edca5c586b54e36c6bbdcc5d60b6883f0c273ca0f815f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/AUI442300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3edf7014a758a98101f6e194dab2a2ffda9c4eabd49ecbda53c6287f4c47c6e. 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/AUI442300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7f6d3f34c101809a8143c126d54c0f9c799d659be347e5e7efe7ae25f52815. 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/UKEA42100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874515d219217df632d89b5898a1b8ab5cc9c2e88f84be9345e9c390a9dfb90a. 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/AUI442300052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0b404a66e57ed3cb8a581e68d12d72efb0c7b5f420c8962d25fc30738cb345. 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/AUI442300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed8a5d21f70e36354aa37958a4bcfa2a85efc973592cec983704c8780ce99dc. 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/AUI442300054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f82672778f95a7048425b828750cf5d08daf7c6e55e130420c335dd4e5177ac. 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/AUI442300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96bd92ab035c4cb0e218185ce3372e56edaed4077df07514dff2d3ae0eb90b5. 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/AUI442300056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4ca2738d5ad39c970fa24ae3f1cd4b7e95d6da6a013ed296d78a84d5f8175f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/AUI442300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba3e30f7b01fd47b0e2dfa658e25deeead9c37ec542eaa169edb448da89c66f. 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/AUI442300058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe627f1d95c7521f5328ee22c6cc217f7a3eb577e7fe8e4368a5b60f8ec96c1be. 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/AUI442300059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16aaf3b80eee8bb8b40185d32f1eed0ac6e2cdba8bae015940105a9c5370a2db. 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/GX4R52223777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e491a6e25fbfdd39b2c6e6a71eb218e98fa1e5d690e4c39831d2e28a5a09015. 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/GX4R52223778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22f7048de0e017845f0da4ca234f15978a00456646ac2bfc443d06244e9f30a. 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/GX4R52223779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afcee1f9637551f55ad5269e47317ecb1b278de8778afe7c29d6f7a549193ef. 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/GX4R52223796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd646e4422a46d5804972041d89b59da607cdc58069ce5a7e4decef0a11604ba3. 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/TCACO1663700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b432e80cd17886fe7935ada58fb4224b54b2baab80d25b23460193ddda63b4. 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/TCACO1663704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4117f881a628c1c50e25cd9789341787093460ebd302f5752f2735821a504c. 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/TCACO1663711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe783b8933d2fe2c53951464bc946ce2b3912ca1f5dc745fed00ac604cc0aa2c1. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GX4R52223789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f4b8fb923a6bfabf63b7fb6196705c05ac1b312c95ec989f74560b0feedb11. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GX4R52223790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b57bf52ba8c9e7aa72b08b5c14f1cc5e0691181a94b49d090c57186b1073e8. 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/GX4R52223791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a6fc450fe2cf384bda4c68058dbe8883517e6ad9b4d868d4eb33c4e470acbe. 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/AUI442400119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7f6d3f34c101809a8143c126d54c0f9c799d659be347e5e7efe7ae25f52815. 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/UKEA42100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3004ec5c04e48eff5c59306e807cee89388dbc3a991e3166383f7714be28bd. 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/QZFZ22414092.