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 0x550cb44edb03f216eb84e69f30b01ea92bd2956706b13ac316b3cbb6d7f78aa9. 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/f5c68f32-88f0-4a8e-8408-08cbd3dc22f2.json and https://artists.proofprofile.net/proofs/artist/f5c68f32-88f0-4a8e-8408-08cbd3dc22f2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tunes 4 Toddler Tantrums (Ten Songs to Help You Tackle Tantrums)
Sing and Learn, Vol. 1 (A Collection of Nursery Rhymes to Help Little Ones Learn and Develop)
Tunes 4 Toddler Tantrums: Ten Songs to Help You Tackle Tantrums
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 0x87caf09c11238c72d149b4100dc96e8f91e422bba02e40cebc2bb61120c0f720. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FR26V1512319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7fca33102b1f2d914f3d54b10338cba3a5a3a944d71aaa04a2e06a9f4c3947. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:10:38Z), 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/FR26V1512321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141c472680f124b4b0ea3e61dac0bf8efd7dbafa4d5383a131d68d566a8bee6f. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/FR26V1512322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069c308b502aed997d86c864f0cb6b79e490aec072838ace27cde543db421e94. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/FR26V1512323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d11845605ebadc70dccbc2e535739c4e2ca2d05ef4759008bf3451980903e5a. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/FR26V1512325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73227f6a4e6156d6cebd1c09bd5b9ac8840533a4bc85e93e2f8b6f0f70d9fa3. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/FR26V1512327.
Sing and Learn, Vol. 2 (A Collection of Action Songs to Help Little Ones Learn and Develop)
Sing and Learn, Vol. 1 A Collection of Nursery Rhymes to Help Little Ones Learn and Develop
Sing and Learn, Vol. 2 - A Collection of Action Songs to Help Little Ones Learn and Develop
Sing and Learn, Vol. 1 - A Collection of Nursery Rhymes to Help Little Ones Learn and Develop.
Mozart Piano Sonatas - For a More Intelligent Baby
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe674b28f06f283337ee56c465adaf7619b70becc3e62c06acc044a73540daa21. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T03:22:25Z), 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/TCACX1746498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d73f1a9eb5a227a85dc71f98574757ad03fe0ad69ef47c912e47c6ae3e73dbf. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/TCACX1746514.
Zoom Zoom Zoom! We're Going to the Moon!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fff44821e33d66b75433b3b6265aeb32b30ca48efc4e255501acc10fe948a80. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/TCADY1838974.
Sing and Learn, Vol. 3 - A Collection of Nursery Rhymes to Help Little Ones Learn and Develop
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6f2da231988ea513a10dc1baa1e83e4fe62bec8ab2f5910353c4e58f9fc859. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:23:29Z), 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/TCAEH1924191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5cf97f0a39643bbfde3d56b70d7efe357b9ff0675c665ec4810d2ec009df39f. 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/TCAEH1924193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de7ad107d073000b753b62c700a1ba5f0a708d6128bf1b037dfcfcc6132f2a5. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAEH1924195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b1f4e6b8361b52ee8991020b8a549a65598e4e88c0753cd8eaa802f22338fb. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/TCAFU2194085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d6757daaca5c5d042bde5442dc1d6c8cf18eb7ae138332bbe5759932947823. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:05:55Z), 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/TCAFU2194098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e9ccb2426c648ea2da9ab7f2ba8b074f6a69abf9ac9b7d659ab3772986b42e. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:28:01Z), 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/TCAFU2194104.