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 0xc68b093f6db72020f5e2952b2afca26df8ed44254774cab14d85d3b552daf957. 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/5a567ea8-17fc-4039-9793-21ec04f1a201.json and https://artists.proofprofile.net/proofs/artist/5a567ea8-17fc-4039-9793-21ec04f1a201.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 0x9b0d1e342d582c85e5fd8cb8a6e5e79cdbd94ef9e18031421b2218b5d55a3ec4. 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/USUYG1428309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e60a0fa750ec8d720a3429b968fc14fa8099fe987b7ba0f1d6a506a56827768. 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/US7VG2172912.
Swimming with Dolphins (feat. Kenny Muney, Big Moochie Grape and Goldmouf)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d7e5d0af7a85097a1a8c1f7bc36e68186338d0791ca1f6d19a5ccd5eafb47e. 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/USAT22403128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed8016432be76b249c6308df16cb1528820a7aa59737a3da703ad8ad90ee18c. 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/USUYG1399022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57aac79cdd62ae6e51650c7dd4a380d58f42f4f0fe959178973d094db558e16. 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/USUYG1379837.
Dance (feat. Snupe Bandz, Kenny Muney, Joddy Badass, Jay Fizzle & Big Moochie Grape)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f168cdd8d57725767b9ce3bff3781f89dea729b96d5c7ecfa647ff7e4dfc26. 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/USUYG1379838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2dcf5fc31c5cf4b781d0accfdd638876485880a8bd97f5066c608ed994ec1a. 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/USUYG1379841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1d77b4ce80af40501161a0842140ac2abc56674ab6684a23fc4b0162b3b76b. 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/USUYG1379851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36bb2b0c5464019df9748b311374dfa432279a95e4a6fc85f10a639764520c7. 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/USUYG1408088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b1440b1ecb9e48bec01e0760cf0a2c734dc9ced058cc7a067eb5d37f534a38. 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/USUYG1460927.
Pandemic Boys (feat. Kenny Muney & Big Moochie Grape)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42acfccc31def6f792ee7b24b138b984a1ff5cd0e173530a8a3d9dca436c79eb. 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/USUG12200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ccd17061c0bac3e83fabf224ea18e02788facc2bb9d2604d01a42adb336ce3. 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/USUYG1506024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89edf96a770f7a8ec54eec0d22d568ad48b858b8408680805d97622e449436d8. 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/USUYG1428299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73fe0f8d77c57558e53bd1431ea21107f58a2554ed53ca011b3276c3eb59de30. 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/QZJ842002707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83f554547eefe09ea8a97a9fa2918ca1c9f8ad9936b232e7d6336f5edb3f618. 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/TCAIM2417164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d7e5d0af7a85097a1a8c1f7bc36e68186338d0791ca1f6d19a5ccd5eafb47e. 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/USAT22403128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd36237704e087736d3aaa9251edb813c390d51bb6b79f41ad3ec139cf3cca0. 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/USLUU2500216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372afb021b1230b2b0fbc827f9cf4f2a9d1235450c7b907b32d35f43d77861b5. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/QMRP82200026.
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 0xd5d2835112455a13eeaa070156b2e957a7c1d9f724325a7d4830c8e4d86da738. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/QZES82025102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022c4d223d90b391bcedeea155b09915b14cd8bf43524064597fa1ab38aa753b. 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/TCAIQ2405659.