Roll Columbia: Woody Guthrie's 26 Northwest Songs
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 0x3933ffb24af0af41a8755d8660c19017cc58e90595e25cc8eab90906e8129fee. 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/USSF11622601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e9cb80453ca652c1b595f987c12a288813a4716f1a689ef488fcf5fb69458a. 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/USSF11622602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25cd36589bcb400ad9160b2fa2596cf277436b71d2570c1e43a52a8cf68940c. 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/USSF11622603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b3ca61ee8c47db841a9ce3fecbda8217b34eb3442774901508f7e2b50c51ac5. 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/USSF11622605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5700b12afb6d51f6d845fb792acf60c375ca5899fab1337d9a40c287ce64422. 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/USSF11622609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7b643a77ceaa5166348f60279f05383da20b5623a6417bd8d36e6b12c99ae5. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USSF11622610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3dc21812c39c10afa65b5fecbb3a36562fb3ad0edfde037eed955f923ed65b. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USSF11622611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7b84b3a11ed0cfc18fcd6cdf6af6288a21d24bf16512632e41847a888dfa0b. 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/USSF11622628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2e95f36559610b5ee2973169903e625ce97475609b2b4f75b8659bca115662. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/USHM20372090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8034e2c62cbb193177c46305c7fc3f0896da504c116a89581ae5cacfb9d0e92b. 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/USHM20372091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238979e2e2cd21f37a04cf7c28b31f754290b5e4483e2992389625760f42a290. 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/USHM20372093.