Klassieke Muziek voor Baby, Peuters en Kleuters
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 0x6771780ba995b15eac51589e4dfed92d86d933ecde4f057a9496c1d56464f719. 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/e7365ef8-913b-49b5-816d-eae3f73928e4.json and https://artists.proofprofile.net/proofs/artist/e7365ef8-913b-49b5-816d-eae3f73928e4.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 0x8892bfb597d602ff2ec687180c8d86ef2e824c04d6f39f6af1981c60e9b37d92. 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/NLGM11703182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d29160331659e600cda4dc6e51c0f14c6756d3ca30006de8894cdfdd5ecdc4. 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/NLGM11703184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a7577d5667afaada8f5c696fdcb089f8d86229ff28a31063a6ae9fcf38771c. 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/NLGM11703185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145fd1b30ce7e6a1c154afe99f8886bcd49a16b8f1f86a66ed23e48a794c758e. 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/NLGM11703186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ab044974bb6793df531489ec30fa4fc8d46a7c4dd38398df495a6a8f45c74c. 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/NLGM11703188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38e43fe123c7a7abf69d41643d20dd1d3be1ef6faf08df801445ab2c009231b. 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/NLGM11703190.
Piano Muziek voor Baby, Peuters en Kleuters
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19ca97dd8061747a4fccecb28683cefa1bcba6bf61cd6ca05b725b62c575fab. 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/NLGM11703201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a84828b336ee0cec271f4de05c34e802c798e8ab8e4b135cc0c7ceb74b5e7c. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/NLGM11703203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21e72f199f63fb43908cf583619a33d42250218173f2b116c144025afc170ee. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/NLGM11703209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74fd46258383ccc78d7de741c206ce65829d87c158ee08ab4cbc4fb64dcceb64. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/NLGM11703234.
Yoga Muziek voor Baby, Peuters en Kleuters
Douce Plainte - Sweet Sorrow, Op. 100, No. 16
Klassieke Muziek voor Baby Peuters en Kleuters