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 0x05dc4b83eb56d04a567565c54d1ad227d50337611db2ed5006f02f2485aeb8d3. 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/4e0dd025-e7b9-433e-a261-ac51f1aed478.json and https://artists.proofprofile.net/proofs/artist/4e0dd025-e7b9-433e-a261-ac51f1aed478.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 0xe020108ebdd9d0d9e91267c8105e297170490201d2b5a63d95dd7a64e01d7c1b. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/USHM80433360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeac8ed2938959179cbef851832c60f8e4c6fdc33aefdac9317159fe7c945a16. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/USHM80433362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc510671c110eb56bb9722286d7f0ca74c87534ab107cff5d3b1c78870032610. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/USHM80490968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5210ab764e5fc78b6583e828e911facc41af11660387e67014c4d5db88354ec. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USHM80490969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5cc1fdfb434356c0d028818e21a0d782d172c5f01695c9614a67ee9fa45dec. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USHM80490970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9138b683f3416dcd96c2d92c3d31b558536e73daef48283f5aedd3050e7cc306. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/USHM80490972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8bd4c8cdfeeef0c86503021bb03857a831792c80f46cdaa64a5fdbaeacdd8ea. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/USHM80490977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a010ef173a004a3fee25a8bc3f9bcce6397febaa3d5e0ab286e4f00fc6e9c8c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USHM80490979.
Mozart's Lullaby - Wolfgang Amadeus Mozart
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73214b08ec8a2d7005cfd293d27c7fecb3d65470e70a63774ecb362ff17e4be1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USCGH0502836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2552c726654cd0d6cd38c23a3661775388672599b61beadf242d28edf23668cc. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/USX9P0671456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d642e12b21181bb9983beeead69d4b6cb738ee7231e13fa59d5d1ac18ed6b2. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/USX9P0671462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f26d24791da854e223de304690153554c74d10ab265081cfc88b98e908a82e. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/USX9P0671463.
A Child's Christmas, Holiday Songs & Carols
Children's Songs, A Collection of Childhood Favorites
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28678bfcbf61e94ca08f551384904a79a224d7c824275f75a57e5284fe8379d8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USHM80473334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c3044c4b0573ddda5c8cdc06271aacc268d982b20b4a75356d5542a05d5b41. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USHM80473336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff1fe0136d064f6ba1198cdf60757b70b69c3435736d6c6b9e42ceda0f1334c. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USHM80473333.
She'll Be Comin' Round the Mountain (feat. Richard Pleasance)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4764779fbc88f8b20d5c79290770904fe53cb72781ce8181603dd18d971deb. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USHM80473343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd1417ff24c4c764aecfea3be7779e41cd4b627df927fef2a8b88f72fa123be. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/USHM80473357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4114704bf526d485c7c1268ca98cedc096a072f6812c90fefc1139b697286018. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/USHM80473361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5d92ba3541d55a614ec9d627e71183f5529ec0e455cc0aae3c7d97a37fa492. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USHM81266913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed0af46d85276ef885ef0a2470a31fcd4e427acb1542b3f74d09abbddf53486. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/USHM81266916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036aa4c65ca6d8de7607c9974bd40375d95c26ad0a498d9f1499e4d51654065e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USHM81266920.
Spanish Songs for Children Learning Spanish
Halloween Pre-School & Kindergarten Songs