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 0x529bbac1df9220e686424c1b70bc67b164797042f2a4ab121129e0ca2f48b388. 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/0ee2b0d7-e6c4-4ebf-907e-1b09b5a81cbc.json and https://artists.proofprofile.net/proofs/artist/0ee2b0d7-e6c4-4ebf-907e-1b09b5a81cbc.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 0xf5df93795ef8f31788bb9a847de8311b13b63c73d7eb88534aae672901bd60a9. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/CH8351803718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705e428442732eaaf86b73b30a3298580ab17e7bc52c1acacada4f29534c7a85. 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/CH8351110701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558c2fc88259b0f3441707e4e1ba383f9ff2862f77db26660bebea69f99e0cd1. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/CH8351110704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292a89f93ca43912f643eae65dcf72073a320f1f6f887dab63e61e4b9fc0a93f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/CH8351412604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3daed0b0fa811b73640a823672e6ba598b14e64c960d66d95791cf04ae2ff7ae. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/CH8351603003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22df544eeb650faf31c313d0114d2272eca169bba77d5ccdbff60b1577f80ea8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CH8351603011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4e73c0188b1c52eb897c2a93742e3abb5f0e99b03fd83ec6008e77cd90c19f. 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/CH8351603012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94616c3810b9e41efb839c74f285ab0b1e03a5f716f0aa808af3d5a0cedade9f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QM4TX1906626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22691927b2cad0c5a4b90467250cfdb856b9b5c3faac556c9d4c6c7fda629ae. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QMFMF2112443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d1818d36b18dc5b5fc7e41832bd77e74c0c4d1aee57acb930fba4ea5859bf3. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DGA092367067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46af8b34cb848c78a15f34c2f71f4fb94e7da94473b32836122021d3892ff75b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DGA062445750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a92f85cde700f117d3e296b26b508d4e51f8cd1b8325bad00fa2b4622de5f2. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DGA062455883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ac43d61f0a5a760df8accc8c79a4e87abfda81c7070adf50f19f3f4c28e08a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FRX202415774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a92f85cde700f117d3e296b26b508d4e51f8cd1b8325bad00fa2b4622de5f2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DGA062455883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46af8b34cb848c78a15f34c2f71f4fb94e7da94473b32836122021d3892ff75b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DGA062445750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3a0b90dfd0f280053242c02f9b9951a652a6027eb5ae5503b9911d8b1f6b43. 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/AUAB01700240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaffe78300032bf9cad003a019844705911ae3887606cd377a8c809ca4f6d521f. 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/CH7811712946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1d800e78adedbd5c53316e0bd986bb3653de643e0e3dcd04897c4b92f9a9b7. 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/GBNLY1040062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b99ddbba64c91f439ae1e6292c262251b9336e77f652a694dd1dd39beac561. 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/USHM21967913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80b624246195128c877831867ef9d9b86548724a6f94f9d56c80b72162e181b. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/DKCC20900112.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2eae71932bf0bcf70d52ad086d1b77defb86cdb9879fd4674ccf34d40c7489. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/DKCC20900118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb104ff0ff7c3b5d2049766db98d206cb31b66d0927b188079fe28402622f0fc7. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/CHC381700149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3476ef88be1e961bcc9c68e70a0210fb8bbf587087c51aed8be8edf2f148c7f. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZ22B2041758.
Take Care of My Family - Acoustic Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f18d41d7f85c4c057d525690fa511b58ca4c17085476a395ed19e0ceaf84d4. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEW930500039.