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 0xe21baac23ba223c2affbb525e8c53c6010c26765defd663aaabf6118936d43f0. 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/3da772f6-abfb-43f1-b017-4fc9ea481f83.json and https://artists.proofprofile.net/proofs/artist/3da772f6-abfb-43f1-b017-4fc9ea481f83.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 0x67a93a99fbf860d41f17544124e11eb7b31fc83e17b4c693e92fbaef5f4780f5. 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/AUOXM2100655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0ced95a4aeff400e930071df7de7d54d4d96680e8569e4f98c9b3c6674b6c7. 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/GBWUL2039187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334dfdca5595a314b297ab705e48feefe97cdbd10d1eca60b05470c6c61caebc. 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/GBWUL2039200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1119a937e65acf40911403fa994b96db071facae965b19232bb1b64569f39a. 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/GBWUL2039204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7472e591d9f33b95e152c2cae6436828cf0afd5dcd8b886eec8e0d667bcb21e0. 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/GBWUL2039206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7311670941938f22932ed6ba243b8a4c9846333143c7b31ef29b24d7cfbd1a. 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/GBWUL2039207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60e520d0cc6fcd16f76c0d81a9d89721f46fbfa053bfcd66418102dee1d3745. 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/GBWUL2039210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36dd3d142d6d73fc04dde3b9cffbc311962e4ee2d0ea967fd1490793bc7a1528. 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/GBWUL2039211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3455a5ecf1cca94971a6116ff59c460642aa1dae6a23c68439db50f5d11fbc7. 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/GBWUL2039213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1eb3f88635251346011c36ddfdce211df5aee22d8433dea6005815aa0808b4c. 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/GBWUL2039215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8d41c3fe67781b4f71b58378861431f332dac2a3ab5e1fe9390f269991e658. 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/GBWUL2039216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f98326db47e17207231b476b7feb5b4a30d3c51ad581998f74b3405187ca06. 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/AUFF01900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064042782dbd5bece1756264ccc5a82261e88f29412f2a88638ed7bdfa89e653. 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/AUFF01900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb338af17bd25e38f00396036374b8ecad68575627da94d12749d50b115f5d1. 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/AUFF01900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf416447c727e95c1dabcf189cb2246d66c408cef0b458a628a243635a181c0a3. 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/QZWDD2291604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e4ad99dee1daf9f7dfe45a6f4b47047a4ac65fb501a2b5472d30127293ff9a. 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/QZHN52045169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c0517c78cb59cedf2a10df4a24e0f9449cc763e1900f474f3ea0322981d78d. 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/GBWUL2025316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e653f2422cc2e79c9897aeac19d217bb469e0fb517fe0aef36754786ffd4c4d. 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/AUFF01700116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27b63bced2c242aff88b0c5337318db9daf493789ff39c54e6c570e67f4bdc4. 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/AUFF01700022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf0c54381338444bb38f755410d00389421a92e0800af4267ac71daff4301d8. 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/AUFF01700024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aee188eefae86e7b425e724a5c42df83d9e4ce3432ae1f30e56597997484e06. 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/AUFF01600889.