1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xe2b7ecd4fa58b3e6f4e6c1c2b8119ccb5d8c8cc734c6f385555289025df2b0a8. 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/789c8645-6d48-4295-a4fa-68f101062997.json and https://artists.proofprofile.net/proofs/artist/789c8645-6d48-4295-a4fa-68f101062997.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 → block OTSBitcoinBlock must exist at that height 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 0x0d2a33a8538fbd80472954dc1e59a37d7f5a79bb67205435eae57fadc77f61cd. 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/DELJ82016981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b9626b045f3d8b6c9749495c803a1a049f875ad0a771d239464665762ebcf0. 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/DELJ82016983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446c17e81e8118ccbbad85ee72fee9c41ecc7889475e81851976ec0cca4371cd. 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/DELJ82016991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207fec86c94a0735ac6aa927af1d01bdf89bbbd8139b377c8debd68686a97ae6. 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/DELJ82016990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc606202d2cdcdf2ee3ea155be022a098ed42bb95eb57f261e21d8e8470d2492a. 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/DELJ82016972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6791690c46d0ae939432e8562e0b23c08d62b1eaaa187866a370db164332b5. 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/DELJ82016974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade87cf42d393be547bcf66607e9dd677b95ea3f1e76a707bbb7df1bd973ede4. 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/DELJ82016975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1597efae9aaa327e8f6b7b27e959140518068207bcafa850194c1e528605cd7. 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/DELJ82016987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee0ae5708f83ecefbfa7fd55f0bfc6728d122630bdc4bc9060df643275320d2. 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/DELJ82016976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041e21322ad8adaeeb6cebf8de2ddc434d577c3223e77f0ee9f4164a529e2a48. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/DELJ82016982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef1825b0f1d832e004a226c66fb694f24cc820fadd7cd47ae7127b2f11a70c4. 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/DELJ82016993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6958c4f9e03fa3b5e25516d8615e9ad516efb55fbb0155660bd13c89bd88d3a. 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/DELJ81906847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8070c57226ba4886794d72c4d2097bd9ea9ce72fde7be25ddc23c07b83992db1. 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/DELJ81906849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8687615be33fd06a9918b2322447c2fcbfe5070a8e2dd81fb5c627cb3bc5d57a. 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/DELJ81906851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cfce87aaa8d8d234e16833c2212b1e0d7d669e8088c3b66081d0ac6a34e475. 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/DELJ81906852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5a264a8defb17a777d7412c849bc3bd10edcf7b5a2e16c7d6aec0f5ed3a896. 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/DELJ82018162.