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 0x8260e11469da4afa658f1950c50eae101c8e6eebfd4f43057e66f65eae65efd9. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7176557d-c4d6-4c4a-9359-50ab12dbdb87.json and https://artists.proofprofile.net/proofs/artist/7176557d-c4d6-4c4a-9359-50ab12dbdb87.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 0x63b2ca90d7fd6b890164fec02b198415e0710e2820bf258ee7d57d221bd00dc3. 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/QM6DC1549378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e783c94f26fbd0d7c8cd13c36bf9611ad7138b944e270fe682ad3113a39425. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM6DC1549379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b96013a7e8501568f4c3a2635b575f50e1db30c389bc62fd01edfdd98708c0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM6DC1549381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565a09bddb0b519741386ad4c20e142cd9dcc41b90a0241b5e03bc993086a62d. 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/QM6DC1549385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af90ef69901c54fc4d3b8f59f96bf1a1c01ef0ed2fb80d024abe08d25cc76f1. 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/QM6DC1549386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2283a0268dc78545b192906422a003044f2144a6b502ab22ced1a0f9bcf11f7. 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/QM6DC1549371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b20bdf77532c60b4fc41a7d2dd862b8227bfdeac57939fb4f8167718eb18ec. 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/QM6DC1549373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5349caba46a0d72c2ac84761534e3fffd115f0c04220be90a91bad06d2015997. 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/QM6DC1549374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749dc607417b2bbd868635b23f6f2a5d58aaf8e64d5166c85eb6fbb3245c1b91. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM6DC1549376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e94d5ba91dc81215dd65dfd93c7579948c9b418a11bdedfb9785f9ec727d560. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM6DC1549389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a794836e04a095cf56d6fa3ff27927f735b0c6ddad58f2e35c13c6eef510af4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM6DC1549392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa944b8255f4e4d3f510ceffd044dcd0cee41e9c26ec09b05a84db4757d8bb428. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM6DC1549395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b96013a7e8501568f4c3a2635b575f50e1db30c389bc62fd01edfdd98708c0. 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/QM6DC1549381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565a09bddb0b519741386ad4c20e142cd9dcc41b90a0241b5e03bc993086a62d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QM6DC1549385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2283a0268dc78545b192906422a003044f2144a6b502ab22ced1a0f9bcf11f7. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QM6DC1549371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b20bdf77532c60b4fc41a7d2dd862b8227bfdeac57939fb4f8167718eb18ec. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QM6DC1549373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749dc607417b2bbd868635b23f6f2a5d58aaf8e64d5166c85eb6fbb3245c1b91. 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/QM6DC1549376.