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 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 0xd6aa27242d1ad7220d4cfc7788b0526ee4a377898220109f5958c7aa45a0f995. 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/6c490bf3-d856-4567-a51a-6349c68ff83a.json and https://artists.proofprofile.net/proofs/artist/6c490bf3-d856-4567-a51a-6349c68ff83a.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 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 0x2151f1a9fb8c11e7dac8d6854c1fe053b7b8beac820c15c40f0433ed24aa6c45. 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/USMN20500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889db25a3eb7a76e3b83b0e8b9f9c726a74a122916ae292c57b33969bc6e7a15. 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/USMN20605794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889db25a3eb7a76e3b83b0e8b9f9c726a74a122916ae292c57b33969bc6e7a15. 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/USMN20605794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2386c5c67e6551809898ae923f2c1f580ad6f9223c23c252d6fd3a6907619e07. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USMN20800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee660f5345710b04eb7b9c99f92bf861f696365c25f8f33d9b8546fe7ef5be64. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USMN20500191.
Open The Eyes Of My Heart - Top 25 Praise Songs 2009 Album Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5b3471edff48ca9e8ab532d34e49e73a1d4f9849633e756b2274ee1a5343f5. 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/USMN20602884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786978f4358af6828744644d949147ca66dfd6d8e588a8e7014c1f60b1779ebc. 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/USMN20600751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x887e8e6bf229730e0ce7446d67389f54a6855da6293ec91c998771c8b68606a2. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/USMN20600496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419c84c24efb38508c207623a6732c7f2ee2f291cb722a9d76b44ba73ef01c66. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USMN20602798.
Lord, I Lift Your Name On High - Top 25 Praise Songs 2009 Album Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9abf32b65760d625e632a3c15efc162b31cc43cf7a50eba9e48946eed3cac7c. 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/USMN20500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e1ffc400a6b72afd2fddfd13f69f08a32bf05e4ee9f051e9393de1eed7a518. 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/USMN20500265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4607209c3b0618f84fd1c873e8c6b8204e0efe165beb00cf5c5ba968ff572b. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/USMN20500192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404a84c7425e0577751dc9a590cf495ed3b3963cb941c174e73a97f122aebe60. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USMN20900049.
You Are My All In All - Top 25 Praise Songs 2009 Album Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615a2cf6edbea52906bb2e830993b475bd2ae97eddc7aa4200e874bcdd033a29. 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/US25L0500947.
The Heart Of Worship - Top 25 Praise Songs 2009 Album Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8daf33b41a56dd6cd659b7bf394973c9a17266b6a7c51eacec82f37377b79688. 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/USMN20800035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1f96cec8e7bb5c54e3a524ad69db090cc7ddda944a0fac55e555282dea1df7. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USMN20500195.