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 0xeb6d14ba238d9a083b481801e3702345b663f5bdc79e42106154b1766b1ed26b. 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/818a2fa4-3988-4a30-8d7e-9e22d03a90b0.json and https://artists.proofprofile.net/proofs/artist/818a2fa4-3988-4a30-8d7e-9e22d03a90b0.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Christmas Sound Effects and the Story of Father Christmas
Our Special Christmas: 30 Kids Christmas Carols
Our Special Christmas: Favorite Toddler Carols, Vol. 1
Our Special Christmas: Favourite Toddler Carols, Vol. 2
Our Special Christmas: Favorite Toddler Carols, Vol. 2
Our Special Christmas: Silly & Fun Songs
Bedtime Sleep Series: Lullaby Renditions: 80's American Rock
Bedtime Sleep Series: Lullaby Renditions 80's British Rock
Children's Fairy Tale Stories: Narrated Audio Versions
Mini Mister Mandarin Nursery Rhymes (English Favorites Sung In)
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 0x7befb4314a761008b06e3a61543a252587738262dc24ea4a5217a40872268ecd. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMVRR1531639 — a six-check JSON result.
Head and Shoulders, Knees and Toes (Mandarin Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702a2198a3840b4b9a5607307b83db28fb0c6e6a731546a101a9c96b35db2920. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMVRR1531640 — a six-check JSON result.
How Much Is That Doggie in the Window? (Mandarin Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee018730bd896f159b495c78a593e04560d0a60f66fe8cdd0ce94ae99bf4636. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMVRR1531641 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0718d5c0d3062fb7fa964374223f32a51ce44fab1a7988f80abd3f3424186439. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMVRR1531642 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8babe9db8d4660f88a9a48b073907d6ac15bc2d2043758df5a4525609bd4d2. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMVRR1531643 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e0648d3f3aba6390a775a298117e04bb9460e776f17d78f6dad4887d0f8d71. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMVRR1531644 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42b451d16d2857897f5cfec2a3d48ee39db8c547abc13a35c874b75610eb1ed. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMVRR1531645 — a six-check JSON result.
London Bridge Is Falling Down (Mandarin Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8575b1c71197ae3da966236214796f2bc557910749a7bbc2ccc366680360e620. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMVRR1531646 — a six-check JSON result.
Old Macdonald Had a Farm (Mandarin Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e816bb3bff0ea0c1ec695117ac880e392b41ed76bc4466a212df3a118ee028. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMVRR1531647 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb866884341d101d2da9f71d4f24b15f3b65ea05bc25a4dc9e00cc78ba84feea1. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMVRR1531648 — a six-check JSON result.
Ring Around the Rosie (Mandarin Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d283b33a6c274c454bc87f15c61d8a2372d77965ed11a5898c4297dff889ac. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMVRR1531649 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5a259bf7cf5b4431950dd055ec543d488a0b18c2718689171450f505da2aa2. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMVRR1531650 — a six-check JSON result.
Row, Row, Row Your Boat (Mandarin Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649a08d720fb85ab1e4521460f5f760be9196f9916adde34b42e9f8be5ce6bad. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMVRR1531651 — a six-check JSON result.
She'll Be Coming 'Round the Mountain (Mandarin Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca644f5da536c35b240cf6ad732abe64526e86b6ba8e542f10a397d61972b593. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMVRR1531652 — a six-check JSON result.
The Itsy Bitsy Spider (Mandarin Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8992fa8bc557477d1f2029b6ba7d088154ec90c236733b5f58e6629db9ac3f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMVRR1531653 — a six-check JSON result.
The Wheels on the Bus Go Round and Round (Mandarin Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5385bf89933679a9da582a056b75bb608330bd628845268468ea4ec1c7d20686. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMVRR1531654 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1322eb924f3f0a72f429e9f1dbe3cd354d915f776fb5b2cf1c90be6e810e3d9. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMVRR1531655 — a six-check JSON result.
Twinkle, Twinkle Little Star (Mandarin Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c232c08276df31104520503fe42a75a88703d873e6a2517e3eed77c4af8218. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMVRR1531656 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49f4e0e813491079b7b62d353fdf828ccecd4dec7ae3fb076c7bfa83c85cd3e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMVRR1531657 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8344bc47b44a44ebdd0db6ce1667c10bdb6a947130d626b99babb73e628b6a8. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMVRR1531658 — a six-check JSON result.
Mini Mister Sleepy (Lullaby & Lullabies)
Mini Mister School Student (Educational & Learning Songs)
Year of the Monkey 2016: Nursery Rhymes in Mandarin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302c863ce8cd2364263c29c2f595cfc304de42d19e4b315ffcdac315c0145378. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMVRR1540116 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5342887bd38d064822c45f55d397a2f70bbf429ec21e3dc9a3b73a0002b844fd. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMVRR1540118 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad6f57f4ab85417484c46965f5688d103e1ab07db7cb05a238633521dfb5fc7. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMVRR1540123 — a six-check JSON result.
Old MacDonald Had a Farm (Mandarin Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bfec1825810e461acf0feb849075443a14d036585a44fdb35a4c9c56813bfe. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMVRR1540126 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943ca0db738e3d4b1ef339869ab725856df1cf7e0d349cace84fffde51df7222. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMVRR1540129 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9649805f92d40accb0549b0651e896249beece3a0eac3ea6558deaa55b79f9. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMVRR1540130 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996356a1693dcd89e6bfdc088af915cb2784bb6d40953e58e85bc2d6b870e946. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMVRR1540136 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9f4fe715974257988216500c08de960a6d06fb5d2faa3f58f4dfe7dfa7c01e. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMVRR1540137 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9218059c2631be7bfc54028df8d8c84a69d07b163d5c2490cbf351caa3e715. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMVRR1540138 — a six-check JSON result.
Happy Birthday to You (Mandarin Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9035963b648aae676a05b26239d6174341ad0a0b94c3fe976773bebc03af9a9b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMVRR1540139 — a six-check JSON result.
Tis The Season: 85 Kids Christmas Songs Classics
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9874a3145a6c8a7aa14e019bb90f9a3682db1310a078caa67fc557eac8e168. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMVRR1539625 — a six-check JSON result.
The Cheeky Monkeys Present: Kids Favorite Christmas Holiday Movie Songs
Mele Kalikimaka (From "National Lampoon's Christmas Vacation")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4341ed6de8145c44b3968bc44e10e80347591a8d397eadae411bcb94388c4f11. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMVRR1539983 — a six-check JSON result.
Peter Cottontail: Childrens Easter Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f72131f205621103392c589c10dc300b093833a5d99cb2fe201fc450578bbe6. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMVRR1631317 — a six-check JSON result.
Mini Mister Easter: (Kids Easter Favorites)