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 0xcac199ab0b86dc20885cf1e92e73ac4114bb0f954079b24075b1aab0eb54d1bb. 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/04ff71a3-dbac-4457-a478-101da2c73af0.json and https://artists.proofprofile.net/proofs/artist/04ff71a3-dbac-4457-a478-101da2c73af0.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 0xed1efee774896ea402a72a3bf60436887e848a45c8a3fb342531e52197996f59. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USL4Q2064857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5a6d41bb07b81585d5abe2e43ec44351dd0c60f7d57a39839f6763920ccee0. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGH2157646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa196bfe0d2d196b588463eb59fca0c04da7d47bfddb4eb9371444f20c5655d16. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/USCGH2157647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a924d6e62a77dceb72fdf1c102ad68c5d309c6deda8883480d1793745ddb2d. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/USCGH2157649.
Learn Languages with Songs: The Abc Song in English, Spanish, French, German and Italian
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5a6d41bb07b81585d5abe2e43ec44351dd0c60f7d57a39839f6763920ccee0. 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/USCGH2157646.
Are You Sleeping, Brother John? (English Version)
Martinillo, Dónde Estás? (Spanish Version)
Frère Jacques, dormez-vous? (French Version)
Bruder Jakob, Schläfst du noch? (German Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e9a09cafcd5b396392407ce3a0ac5b66a775f3efa6f8b6c613785b0b6d3fdb. 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/USHM22269686.
Fra Martino, Dormi tu? (Italian Version)
Learn Languages with Songs: Brother John in English, Spanish, French, German and Italian
Learn Languages with Songs: O Christmas Tree in English, Spanish, French, German and Italian
Learn Spanish for Kids Lesson 1: Hello Friends! (Easy Spanish Learning for Kids)
Easy Spanish Learning for Kids: Hello Friends! (Intro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e13f21794de3e4557a07311e4dc658a670492e99b6a1b3a78859e1e240cc42a. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USDY42366984.
Learn Spanish for Kids Lesson 1: Hello Friends!, Pt. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8c1701a68a13c84d74592dbb949633cbf52b63b2f236f01994f12922fcae14. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/USDY42366985.
Learn Spanish for Kids Lesson 1: Hello Friends!, Pt. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf34964edcfd2ee1b69b1779407dcd676a62372253e40a3f812f0932a7e44ca. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/USDY42366986.
Learn Spanish for Kids Lesson 1: Hello Friends!, Pt. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ed5e65d7999e8ed72a40482e73088f5ae3fb5ebc59f50bd714c8693e41189c. 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/USDY42366987.
Learn Spanish for Kids Lesson 1: Hello Friends!, Pt. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60998a719a3a454b3306024496a8d7b9fb9fc82141b5f80708e328219af074cb. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/USDY42366988.
Learn Spanish for Kids Lesson 1: Hello Friends!, Pt. 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd34496562a7c83d900803955291e9477e25a2c335a834b18b0e390e3a239bf. 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/USDY42366989.
Learn Spanish for Kids Lesson 1: Hello Friends!, Pt. 6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a08debb62f4397ee2c7f32e73c69d5d983589cee51b4bf968ff0e3b1141019f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDY42366990.
Learn Spanish for Kids Lesson 1: Hello Friends!, Pt. 7
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56339cbc2610e256136ab82b632f15df1a55197b2c16861423c3f467d5a28da. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDY42366991.
Learn Spanish for Kids Lesson 2: Colors and Numbers (Easy Spanish Learning for Kids)
Learn Spanish for Kids Lesson 3: Countries and Numbers (Easy Spanish Learning for Kids)
Learn Spanish for Kids Lesson 4: The Spanish Alphabet (Easy Spanish Learning for Kids)
Learn Spanish for Kids Lesson 5: Animals (Easy Spanish Learning for Kids)
Learn Spanish for Kids Lesson 6: What Do You Like? (Easy Spanish Learning for Kids)
Learn Spanish for Kids Lesson 7: Days of the Week (Easy Spanish Learning for Kids)
Learn Spanish for Kids Lesson 8: Climate and Verbs (Easy Spanish Learning for Kids)
Learn Spanish for Kids Lesson 9: Body Parts and Verbs (Easy Spanish Learning for Kids)
Learn Spanish for Kids Lesson 10: Family Members (Easy Spanish Learning for Kids)
Learn English for Kids Lesson 1: Greetings, Nursery Rhymes and the English Alphabet Abc (Easy English Learning for Kids)
Learn Spanish for Kids: Christmas Special (Easy Spanish Learning for Kids)
Learn Spanish for Kids: Dia De Reyes Special (Easy Spanish Learning for Kids)
Learn Spanish for Kids: Valentine's Day Special (Easy Spanish Learning for Kids)
Learn Spanish for Kids: Travel and Holiday Vocabulary (Easy Spanish Learning for Kids)
Learn Spanish for Kids: Cinco De Mayo Special (Easy Spanish Learning for Kids)
Learn Spanish for Kids: Mother's Day Special (Easy Spanish Learning for Kids)
Learn Spanish for Kids: Children's Day Special (Easy Spanish Learning for Kids)
Learn Spanish for Kids: Father's Day Special (Easy Spanish Learning for Kids)
Learn Spanish for Kids: Mexico's Independence Day Special (Easy Spanish Learning for Kids)
Learn Spanish for Kids: Birthday Special (Easy Spanish Learning for Kids)
Learn English with Songs: Educational Songs for Kids (Lesson 1)
Learn Spanish for Kids: New Year's Eve Special (Easy Spanish Learning for Kids)