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 0xb851dcef59afd628b42525651f1ed821348d133100a859bd439fdbe4308b8180. 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/fd0788ac-64bc-44ea-94c6-e6d4346319e0.json and https://artists.proofprofile.net/proofs/artist/fd0788ac-64bc-44ea-94c6-e6d4346319e0.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 0xc53368cd1bedb4c4570d616669341514d9ea3163596f8183ee22791ec534a39c. 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/FR9NG2100069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e385de05768cb3aedcff6369c985877f02aa8f0ddb041b2fc6128da19af88d6. 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/FR9NG2100050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eab129a0fe5bc4184c35c56af26ecb9a44087f1ff1a0da531c43254f6374392. 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/FR9NG2100051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe102616611473f09a49ee6912e0304bdeb16cc4530c95275c759651cd71a2b7a. 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/FR9NG2100052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32293a4b4c907619e24b439fa20249746390c5454f3676ee829cee6085e25ae. 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/FR9NG2100061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140d8de61482fca2f1339ad78d765a1b94a93b91b3cef7a1a854a57544e3a245. 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/FR9NG2100062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e70931015bf31dd02727259a24e3e29c3fc12be910937875dc87837d7d30fcc. 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/FR9NG2100064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39c61b38393a57cd9e7c05eda1b57e972f87cdb03ca0851cb0e515bf46a4641. 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/FR9NG2100065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53368cd1bedb4c4570d616669341514d9ea3163596f8183ee22791ec534a39c. 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/FR9NG2100069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a98d9cb9dcbb882b5491fab9888a82c0c9cb17aca4cb8ca5c33add31b1bdeb3. 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/FR9NG2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25314fdcf91a14b84e52ed5f4a65c312b838867740a412b2cf05721cf829eda9. 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/FR9NG2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d77dbac88fe65e9ef42ed9d16b545ca607c7cb9c03d3a4247300b073b4a5aaa. 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/FR9NG2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4368feed0c969c96f265fa860dc0a7f988363e40bc18a5ed909414434581ba10. 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/FR9NG2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1630931959801563da10f0273b0fabc2da2e1054d69d7da8a5be8b74100fab38. 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/FR9NG2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1218b971c3af07ee2c45f9c9966017b2a53b3f3abddf57abb34f7d7e85f78618. 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/FRR642100473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7d19f5339186537743945c174cff8405eec962145f5e93e7a53a8f85ce5d79. 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/FR9NG2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e09cd76d02d2d5fa0da67d55942d1d23cccc1ff066370fbc4c22a0164b2583. 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/FR9NG2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1bf6078e969376f42af657a71326960837b3e2c902ee776957337f090489c5. 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/FR9NG1800283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f882e8161d03daf27634ff23a6076106e644e923ed71f471cf3acf3410b4cb. 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/FR9NG1800310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6b32112303d6a7e1a4531c7b7e8ad6dbbe2c266bffb110642bb1a65980ce91. 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/FR9NG1800019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39c61b38393a57cd9e7c05eda1b57e972f87cdb03ca0851cb0e515bf46a4641. 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/FR9NG2100065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe102616611473f09a49ee6912e0304bdeb16cc4530c95275c759651cd71a2b7a. 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/FR9NG2100052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eab129a0fe5bc4184c35c56af26ecb9a44087f1ff1a0da531c43254f6374392. 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/FR9NG2100051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ecce23cd25b1392a022399eddf4281009de230d4f7f1959dd4dc299c59c972. 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/DEXC82100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1218b971c3af07ee2c45f9c9966017b2a53b3f3abddf57abb34f7d7e85f78618. 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/FRR642100473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1bf6078e969376f42af657a71326960837b3e2c902ee776957337f090489c5. 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/FR9NG1800283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5d76661ab08b469401fc773ae9ac9e3e8a77d1a12aa03ca28027fd142581ac. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR9NG1800212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fb95e18093ecc3b0bc8ffceaca22bccc60ca1f1b1197a37e96580fe00621a4. 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/FR7X62400100.