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 0xc90fd61e863be9b4a7a05d288af254f3ac64178d418c8409b67ff57bd1ab180d. 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/95c62c1e-a0c0-4eb9-b032-729bc32fc76e.json and https://artists.proofprofile.net/proofs/artist/95c62c1e-a0c0-4eb9-b032-729bc32fc76e.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 0xd74c99c658d8e0f88f1c1d6f80acde11b1edde5576bc06388673291b7907f7f4. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/ATFF41900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ee49f331f453a8c79b37711700dad7de12f2d2c1259d54fcb47e4b491d84b4. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/ATFF41900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261ceede6d2e61477983149205a891db6b11fd065cbea8b50bd41464c5b0e5b4. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ATFF42004000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ede62e7790358e52548efc87467f3eb4ab7e02edb1491fb853bf3a045cb7ce4. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:41:16Z), 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/ATFF42005000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed3fa0c3019a1a6f99362a4596760b9f081562a1db91500a389a36fda5debdd. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZES82100812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8482a7e1588f9f069ea17fd44f197250eb5232a93f0491e0c11c53d8f55067c1. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ATFF42100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64512108d6c57780c354aab3c8e4e0729dba1fdcbc122b2c123db2e8561d9625. 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/ATFF42300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70640d109145fe5861933fe0dccc3bc37d0469a31303ba27723979d713bc0758. 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/ATFF42300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb19f98f4d1f483ef8873ef1be847eda1ffc5407c7b94a6b835e5ec98d6c01e. 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/ATFF42300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68a4676637f2dbe17666dced25a73e7ebadd6de945f62520bb7588782b02447. 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/ATFF42100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3c98928447eb7cd973e47b107295fc1ea60e35c3ba0bbbee9eaf07ae88f9ea. 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/ATFF42300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2473577b4be6e650c77ceab84397911ba6a150fdf745cad755a07ccc002f26eb. 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/ATFF42300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c521d7adc4e5e83bb6071544eaed8f921b65dba021a9d87baf6e40eb37f201c. 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/ATFF42300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb600c260a0a4a673852616267e98bc1cc283253b71f4bb0a5c944bd248fd13. 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/ATFF42300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4c5afb90e85542e9d5511cc7883305612d782e3868ba82c05ef707b74e6224. 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/ATFF42200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa739488c5515072c29c2b0260ebfe79903282721f0cbeb9d1095bfec7c186b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ATFF42400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21173c2dd9c06578ce8f31a4b5aba00d3f7d80bfcb99e237650035b83edb67c0. 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/ATFF42400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f830da5d3ce0547ee640427b2f6b5d4f073a599c5807bcd4ee2b216e790c3db. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/ATFF42400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215ddc17699a5919a7f924a18e7e7fe515bbe8675a0e32b5b03509fb2b2c7bd2. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/ATFF42500001.