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 0x4073b6407afe95e0b03ae7957729c4195034eb3d2813de243ae9af4f09558bb6. 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/02fc5e55-50a4-4845-80ef-669c919cfaea.json and https://artists.proofprofile.net/proofs/artist/02fc5e55-50a4-4845-80ef-669c919cfaea.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Het Zijn De Lil Ones - Lil Ones Themalied
Het Is Vakantie: De Leukste Zomerse Kinderliedjes
Dino Dingen: Kinderliedjes Om Op Te Dansen - EP 1
Dino Dingen: Kinderliedjes Om Op Te Springen - EP 2
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 0x21b178cdb62f895a479b7396a561faeb00b48c09776d85c27cc0c583fffd55d1. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLG662400332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e067165a891d14b2cf8facc39ab031246e2d35bfc66fda3e2ab2abaecb58ba0. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLG662400336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582cb8681ff69aab072bca906ce080c8952cd5b5b378b645cb45ad480bc52e88. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/NLG662400330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe357a2ad2650f473255b060582fab694f918fe1f7b8c015d478e84a3118e5905. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/NLG662400503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad435747a9495012d39fe906f5a6f2bd1bbfbde0dc39a40b0126532851e39cab. 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/NLG662400504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460c222efbc6b0e1f5b25d6fcf22b1ca990f06435c95ebc08344dfea89f9d86a. 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/NLG662400505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7fb21a8f4c4d864fdc39d535473bcd453a05e4ed5c520625b076228312c73d3. 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/NLG662400506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8c17969005f46d1690e4dad2a8a7a3fd69595788be7794144d4b95a31bfee3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLG662400459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0b7fe2a1f512c85d5348d9844d4cb8498eba63b3dba92e28b93e80d3218aff. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLG662400460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71557b2fa4db24ba877ed3abf054be80567dc7c1df4fcf34d90cdf23d14ba9de. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLG662400463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d253a47ef6b5243778fabc6fb3f6c4ee3864cb2b1c75169c38e7b978cfb990e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLG662400461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b35159e2b42108031719bf5837dab3481d7f44660a776b534454f0362831b32. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLG662400462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff4aafc037eedbebf4810d6d8b148cfb92d807a2bb46c4f67a355132d504f78. 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/NLG662500062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12496de6d7e4e414197138c228830137a7f647562ca721251dba6984c11544a8. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLG662500063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2bcd1788bcfa4ec939cd396d8129f1fe8c0e4f5519478a6f27e8227396c7e3e. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLG662400444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0de5fae88cc8256501e608304ad496fa1088e968326af462d4345813c9217d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/NLG662400114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582cb8681ff69aab072bca906ce080c8952cd5b5b378b645cb45ad480bc52e88. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/NLG662400330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01aeff488979c3420d9dca246cb8a22f90d4af606af35bbc2419687568963e50. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLG662400455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5c037e5f465e220db13ddd57eb457c4d6f90abb23e6250f23e5fff28e232f1. 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/NLG662400141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690126efe735c14f9e144a8af433711b776c36891aefd569f84dcae18367dc6f. 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/NLG662400128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6db4341fff7db2a7d9889a1277a53eddeb58fa802a826a4f9bc33d4539f929. 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/NLG662400129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf021cd13a5c65a23b31dc24756536c2096c4892f84d8a8291ac6ba5a5db90e71. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLG662400126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660883bc5d7fcbfab06907138259076b77a3dba0e86ca27f185d67a24b8da55b. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/NLG662400125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab55f9c189be12aee1dc609a2ac06a381d8f6a42abb14f4fbaf5d6012fe67685. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/NLG662400456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b178cdb62f895a479b7396a561faeb00b48c09776d85c27cc0c583fffd55d1. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/NLG662400332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6bcb69fcd12bd3f15d6c3818706bfdb1b30d43cd045c015fb58721b8d8a4715. 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/NLG662400124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3c82ec0813984d51091099cd4d45e7f02cb49ee77a73041de1bd2273c229f9. 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/NLG662400445.
Dansen Met Trafassi - De Leukste Kinderliedjes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5e6f8e0b16cb77a68db319bfa44784088aa2a1d100efa49b79994c0927be5f. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/NLG662500304.
Dino Wil Samen Spelen, Maar Is Zo Verlegen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6788c5d22e77e346e703b513eac215d37d0d4deb9fc2327f03e75df4540a14b8. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/NLG662500305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40300b9a13573019b3b7283b22208ff344c5f2641b066e14a37073a545404c7c. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLG662500306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd2ba888bce03c89cf216d38e3bb1fe1dff9d080399e585eb2b961469d73f48. 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/NLG662500307.
Chill Ones: Yoga Voor Kinderen Themalied
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0beef6d0a8e672b37ffb5d97e604c3d5fddb00e25a856e614666a051731294cc. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLG662500512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2875c87390bf24b8964b8ca2206d2d218be007641f220699da9ebcbb21fa5c. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/NLG662500513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33967b5b711c920d55df4dddbcfa908f8a437d5aa3e0cebae766ebcabbfa5a8. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLG662500515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f50bcc46eb39b59768dc0c9f02581062d713a11126c1995903626675e70591. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:08:14Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLG662500516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10deb4b65c07f3bf922a8df1d45de91db994a8b6a1a74a8e129dce4de479cd76. 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/NLG662500517.
De Leukste Kerstliedjes Voor Kinderen - EP