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 0x015533feceae789a624e40b96238861a9cbfcb89cb4e5da0fb489477101f6952. 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/329e0959-477e-4a3a-842a-177db30737b0.json and https://artists.proofprofile.net/proofs/artist/329e0959-477e-4a3a-842a-177db30737b0.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 0x5e80385bc13afc6373f311e68cb96fc64cfbca5810ddedd3c8d1f6b543ab9159. 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/DES232300000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90429a56468f85eb99e5f4b0ff2c1e04bfc6042279b68c3073d382838a45574d. 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/DES232300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9660680d24884e69a2cb77d801d2505dee994123bfb021234c61fa07b9d3931. 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/DEA622301013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30eb2b2c13af2bb448b535e0358473fd0d5642547f8a69f5f94f6f2e71f9def. 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/DEA812100344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c669f6b8d78890a4899547f1d6d09ec090eb4ab3a4779892dff5783994e243a. 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/DEA812300192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aea8ca8e8db860a00a68f0e93219bb59568ef8dd2e8cbeb9ec128a84def3fd6. 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/DEA812400085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea1f01270b6f4213d6e7e64567786e3b373ee51d7c92654286638bfacce2502. 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/DEA811900592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6e4c92a2ebf54a8fd5e581c8e76ad3939da610fb676dcf65c059f05ad9fac4. 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/DEE862301943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24cfd933a7b2e19a24ef77f146c228fcf52b1882769b517dfdb5d0289df05a3b. 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/DEA812300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c669f6b8d78890a4899547f1d6d09ec090eb4ab3a4779892dff5783994e243a. 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/DEA812300192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69400afc7cae2b8f6454c0e8a3a9fb1e0f2a7b2630406c62b87fc88f226e4285. 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/DEA812300347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7058a1860e7718f8e5d16e29e6aeec2fa8ee5aaf6244c7a142df0907130d04e. 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/DEA812400086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06907c4b22f638a3faffde2a4e843eea13f787ddb7161644492af34224c0607. 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/DEA812400087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb57b11516201063d1594d2c7022020fd0620d356ef36629dd03b795961a7b0b. 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/DEA812400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eadcd3328bbf5007deda4c20efe08df70eed87b248173283c79b29e3d5a54a2. 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/DEA812400088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda62f5b3c1bda67e6e96b6895f5a3f8411b18d2ae5ab7782251ee9d5b03a90c8. 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/DEA812400089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd95579ef0d4af085d1a2f76118eed774c54c833dd4ae95e173f8a6d8e6a2b1. 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/DEA812400090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b09d2cbb3eb103e06558364ca15e4ead74d4b00c7aff8cd2f5b6d9a38feaa25. 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/DEA812400091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0eaca7f57d1301aef5ea7b6abf46de208069ea257cd00dc341a8b07d82fdbd. 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/DEA812400092.