Kindermusik International is an American music education corporation headquartered in Greensboro, North Carolina. The company develops the curricula used by licensed Kindermusik Programs. Kindermusik
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 0x437ea74a25a290a3eb50288a9538c35adbcca8a64760c496ee1d3272d2b0e4e3. 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/dede84b6-da0d-4ff6-8e3d-475e845d34b0.json and https://artists.proofprofile.net/proofs/artist/dede84b6-da0d-4ff6-8e3d-475e845d34b0.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 0x6044f94cc6df43142be2d50a9c92667231c6583e8d4843cd10a69bf3cb72a361. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T02:17:57Z), 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/US5GB0900915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef926457314899c52a330fa7ed64eb5a8599fe41bf69b2c0662d8871b5e1a64. 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/US5GB0900934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e72009458edf24d90bd2bd6366390158b74628b433767ade4d6f4e7810b805. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5GB0900826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577bd8ef49f7417d5ec4f2c61ba979cb0474738bae2056f4d1761ebbc3f8f175. 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/US5GB0900834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b430c358c3ff4f137951bbce7f3502615212edeacad96e9c70607da38a663a6. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/US5GB0900841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f58a7b679790a6290d17255e79bbca2ad97858f49f4207c9d26abb67a466273. 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/US5GB0900842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed70c177d56039d85113aa2f3b91c2294f9b4f0df8551ce4b3b0021694a1e7d. 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/US5GB0900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa208f7e14916a223a37c3495ef375c062a7b48ebe0c20610363b360f7f61cf59. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/US5GB0900746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c852228c22d9f82c7c0108fb7dc81c58a7d3b6faa8b0bd0559aae9d27155cd. 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/US5GB0900751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eec6b16e6f88f4fb5cb1d222b6f65f2c641058d02e36aa95e776f103c8e7a89. 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/US5GB0900367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954f0f2fe9fd5b2c91f27dd209f9283a5eeb5e3cfcce5048367691b5031363ec. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/US5GB0900523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3c32920d93e8ac42795f34dbedba02c37bfcd3edd03a5acb8938ba7e09ec7b. 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/US5GB0900525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677253fcab2774d5c6e6e9968ac061600d245c7eedc5d03c480dc89155a08e4d. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5GB0900414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3ab8748e0cbffcd4f85afad4466c67d005977c1689712b9165f169ffa15296. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/US5GB0900417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6957d204bdf73b3be9f0c10f503c591a7b7646673d04cf59f3909c780b5178f. 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/US5GB0900419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799a286348e1da0633c7737d339cde1e735947a77cda24ab80a5d2469b83f659. 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/US5GB0900421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d52d0ff3aae27bb1ce4c7908dd2195444358962a9a0c045e88e3d951dd64402. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/US5GB0900195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5677ea2680db8fda85248921a47a12cb6918a84236d89f105c1df8a33a3fd8c. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/US5GB0900203.
Goldilocks and the Three Bears & The Three Little Pigs
The Tortoise and the Hare & The Lion and the Mouse
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2e01cb392c9f73acc9d2b12aedb0f9744f7af385ad72f123437fcf0b4d8028. 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/US5GB0900773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4685c5ee494afe07b836532aae0a474cb28e5a0f1ad728ef1433d1650b89aaed. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/US5GB0900774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c991217bb350315b378e0f851617048686c28ef65c7ce9da9df1f32c31dec4. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/US5GB0900776.
The Toe-Tappin', Foot-Stompin', Egg-Shakin' Blues
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9820cceace3aa8f4ae2b14d239166267a4157a2bf17eb7d04fc710ff194539. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/US5GB0900777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6662098008b1afb566223da7610f8e5da001ef8ce0afaa08125578f40037a5. 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/US5GB0900778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b9b1bff4a147412e916d809d1b1a241ded74fff29f3ffb55a2d02e169282a5. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/US5GB0900779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ad5536a7fa6a6eb2fc046816edf0a489d5d11380264f76e5d44556adeace37. 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/US5GB0900780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf0dda7684e51ac7399fcdb6afcc6fca16e561927fb13fc6264a0b01b3c6d81. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5GB0900781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf562d68a0c267813d5245d6d1e22039acc52a37eb80835224acf71293a91781a. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/US5GB0900782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc6e8187d308bbea184c25ad6a3b9a49d9143b427035fefdcebdebac151c498. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/US5GB0900783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21b494a02851534d1910fa494cee137123926609718e925eeab9e31525a0ac6. 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/US5GB0900784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1ba43bd86be55cfa4326eebbf97138706c1b78f3610408342e3ecd3ca64c76. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/US5GB0900786.
Calm Baby Sleep Music - Calming Sounds of Nature, Relaxing Music, Pure Mind, Healing Therapy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92693256fb7d8db310e50666ce54ce2e5d0f36701117a975fe61a63c5ec94e14. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/GBPS83935547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3a96f8974fdd556f480cb4d1c2c6fdae956a261affbf1fd740290ff6a91bc5. 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/GBPS83935552.