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 0x28ab2bed8f87ed1574c415ba319a67f296aa3d0e2427b110e4ec97b49edb7cdc. 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/3325011e-be80-4aad-a9dd-528662fcc621.json and https://artists.proofprofile.net/proofs/artist/3325011e-be80-4aad-a9dd-528662fcc621.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 0xffbf2a3b10e2f8356fadeb9b276d24a153361114436c0b351d5513114ce53ece. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/NLG661600442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d34786c67dcc73ef231c1e9c62192a91cad4d5218ca6906db548b7ab417ac20. 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/NLG661600443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6eb0a336ac19390843e52bd812c3e589991e7ef7862b6392574bef9af0e03f. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/NLG661600445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8fd46dee7c9a46430425edd0328183b98cc356519e9577f9005921136c044e. 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/NLG661800239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35596f7ee863e4c7b456366fc03ce71d9c6ab095f56f66d309291b3b1765b61d. 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/NLQ7J1900005.
Alles Kan (Titelsong Kruimeltje en de strijd om de goudmijn)
Weg Van Jou (Live @ Barbershop De Schuur)
Geef En Neem (Live @ Barbershop De Schuur)
Je Hoeft Het Niet Alleen Te Doen (Live @ Barbershop De Schuur)
Wist Ik Het (Live @ Barbershop De Schuur)
Alles Gaat Voorbij (Live @ Barbershop De Schuur)
Goeiemorgen (Live @ Barbershop De Schuur)
Het Stop Nooit - Live @ Barbershop De Schuur
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf745ee99c34c5c9cc9ec1a27bff409d3519c4b635a9372d3c4f811434f7c87. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/NL76Y1900040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05074c25312265d583c121fe4368fe56d9d359d004abeb9190366640fdfa7ea7. Chain 2 (Bitcoin): anchored in block 957632 (2026-07-12T00:10:15Z), 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/NLQ7J1900029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0503496cb059368dcccc8756c563a649b243a52a2fedf850747e215f4c61fd94. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/NLQ7J2000044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c47b04f96425a5b4377f05092c0cc2fb8012d45e353668cc8240900b4d3877b. 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/NLQ7J2000036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad16d349cf91a29ecb6d9739c384e62f1d5856e23d744b3d1f849c4af6d6c9d. 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/NLQ7J2000033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05483edb95e41e8e84adced257f9abaa11914da58b43472f1eaf0e6b8f057293. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/NLQ7J2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12143e36e27072179a994c84b87fc9e373f7cce3c1af485444b1ba1dd1fcb85f. 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/NLQ7J2000039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917bdeeff6af67626af9339f52bfa8e2b6350f3b269965eb41d4b43ed3a97efd. 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/NLQ7J2000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7222b2d1beca68f8089018f6e5ba9e98bbdc13f6694a7b228612bad41eeaeb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLG661500257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f30c651d5f4ce6c67b8408ade1da456d9ef2e75abb1b35f78700375437ed59. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLA6M1400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e7bfdc23ec7457087b80676a77899dfc866105aab6a2f1559b7b53650ea91c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLA6M1400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93296b0ce68d2c5abff2ee447970171525e0f709fe27e08a25bfe3b11a97cdef. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/NLA6M1400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e40a0f0ae14161fa76dabc7f0ed3de6fa0b06bd60b7d67dbdf53803588bbe64. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/NLA6M1400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0525d92d4a3fa481fce27abaf40e6375a713514e7dcdc9cbfb22bf74addccf. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/NLA6M1400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ae8b9cd3ae4b5baf27ec2c45ab7b69f0e2ae758a33b17f515b9ca1578a3973. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/NLA6M1400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc133da2f9006a19d2fb6114a1ffe50475a3397c8b753d391624aa88649e0a59e. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/NLA6M1400027.