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 0x8037e9c849c6234392f2e2da8f53f779d8c7b38e54fe6a5dfe6939c7fa722507. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8eb06e12-da78-4308-b9c0-aa968d9889c9.json and https://artists.proofprofile.net/proofs/artist/8eb06e12-da78-4308-b9c0-aa968d9889c9.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 0x8de240f1e9749e055addd05510f8be0f78c91327bb3d0dba27e1121858e956d6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4R1800793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e79eb93ebb25c712150dbbf9877501f4bd3a41fb519aa684e9c8359268d3b9. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/USL4R1800794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70543843965cb74f59be55badd1e38fea9682ee73e23631cde063e031c345149. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/USL4R1800797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972c50c7d428b660042cfa90bb2bcae6c86bb76ece2ba2d71d256c5da24b65bc. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/USCGJ1910844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53937a844e3f7b2abe2f43cd55ad9f072615c8c08b83f52eb5645cfd6bda67d. 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/USCGJ1910845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffbc3662d8293c340a1c397bb3bf86c74296f979b1b8f563e333195a170497da. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USCGJ1910846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0d41b5fc003c88f01202bf5b1075f3157a02d658566e91ea668582e67bfef3. 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/USCGJ1910847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99473d962c7122971b2b110f95118f869421bbaaf8e7e570dbf28d04a8cb282. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USCGJ1910848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe335c83773f6b5d81ce513239626cb66f8b9621482153db614efe26b067ec00. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGJ1910850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c675eb34cb7f2020782aa8b3dc0e62829e5c7ea6e040a0105f5369f598e797. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE5BU1904959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5db41c4424836d43591e3494a8ac4433516def092298b0c301609ba2ed3bde8. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/SE5BU1904956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95029f6c1dcee228137fe29b2432ce082a8552a2c34971c408b830343b8c5ee. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T04:24:21Z), 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/SE6HN1955082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ecfce9e1ef3912dec39978e9a4f5a0e7cb65f525b3d733a6634deaddf0b767c. 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/SE5BU1904957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f4e689fc08931e4b543809f8e8442cf0ce6c29abc9f543d59b5757c4eb45dd. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE5BU1904958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c7ba3f22f43015df166da3bb21785a1f5256cc3d1511b50651de67d8c7bb9f. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:23:13Z), 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/SE5BU1904947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ada13a510726bdea542d6964208551c5f245c16be5ddff523804507a6a84959. 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/USHM92038067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16094d73e102c99aa88c55fdba5528604060bb4c28364ce1b9717227aa2036a. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:18:58Z), 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/USHM92038069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91db8f756d5de61fe2a0d76ea48282ff24bf695d8059509c18e14af95d861d0. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM92038072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2792aa436c1d97fbb6437eb2157db69666baa5c4a557eb8c4d91937e60655bf5. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM92038073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e832575ab5f361be3acf97693cce92f9e43d670b2c5fdb588bc89f53265b39. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/USHM92038075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e89c3157298a4b379b4a257afaec5889f5bf7cbdba4d94afcd8fb052dfd799. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USHM92038076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67315bde47a2da601d951090b25ecf7cae8113b4c93e7b4b9da2ec4cd09c44e5. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/USHM92038078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bbc7ef5172f9404d7c605634933dea12c9f1f6de55838eb015629a9c8d30031. 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/USHM92064358.
El Abecedario y Más Canciones Infantiles
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfcf13d6780b1fe13a8cdc36aa7724f50617e1d4ddce4b8f89ccc072af46d1b4. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGJ2100045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10878f6daafdc229094770a1d6b4267669febb62596e92eac9efc4a1241a145. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/USCGJ2100046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95629a0eaeaa8e68e0e24cbbaf7fff6c75977f6bdeda2b4c82fcb815bff51c1f. 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/USCGJ2100047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d1f9715b8788c6aad9c0e7f29eed895db95389cfdfb92cb5e4c65faacf4c67. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:03:52Z), 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/USCGJ2100052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfcf13d6780b1fe13a8cdc36aa7724f50617e1d4ddce4b8f89ccc072af46d1b4. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGJ2100045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95629a0eaeaa8e68e0e24cbbaf7fff6c75977f6bdeda2b4c82fcb815bff51c1f. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:03:54Z), 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/USCGJ2100047.
El Abecedario 3 (El Tren del Abecedario)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec30dcc5fa4d0c732e8dbc99b135d15941a91454791b5a24f1ca255652f76f8f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USCGJ2100048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776a5d4fcf8b48682aff22b486ab2fb205230f8f4dbfa8fa54ed93d646469a24. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USCGJ2100049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee3404b358f4eb366c7f89c92db1b62eb815208665e89fcc097063211bba020. 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/USCGJ2100050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d1f9715b8788c6aad9c0e7f29eed895db95389cfdfb92cb5e4c65faacf4c67. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:32:07Z), 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/USCGJ2100052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5cfc36eb38bed9ceefd8b5b82333bdfb8b5e4e03a85c9bcf85c24a23229f86. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:48:49Z), 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/USCGJ2100053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da728ec734522c38b52f1410f95db79e354acea8d657802bf6dc7460711a8ff. 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/QZHN32122554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7a18f2198ecf447518972e5d4bbcd56fa9beb300df600356252fd055cc29f3. 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/QZNWS2139293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42110cf5c59b7350492151ab625932080284031a2dcdb793732f4551c93db8e0. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:57:35Z), 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/QZNWS2141469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd534d6d7e8e521d1dc9b25560e513561b04ce65cee4e7a443b811ef6d9d109. 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/QZFYX2224233.
It's Raining, It's Pouring Nursery Rhyme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ebed0b07cf054f737f2c912056c0ec53f5739f9179a8bf84e354c5ae0c4a92. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USMH92317624.
Alphabet and Phonics Sing-Along Songs for Kids
Sing-Along Songs for Kids by English Tree TV
Colors, Shapes, And Fruit Sing-Along Songs for Kids
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71991b734c75b8366a39b33318ff14d054c977e61fac5a4cbb01fdff28fd4122. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QT3EZ2462636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e28b42f77d82114c3029b50c8a3d3107a18a885a6920fb1ebc323967e14e12. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:21:36Z), 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/QZTB92444006.