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 0x32b8bceb216b26944f987d9f074b3b7ac5b7654f09f2dddb1236da8a30987d71. 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/0caf157f-2038-4cd4-a7ba-40480b8767e3.json and https://artists.proofprofile.net/proofs/artist/0caf157f-2038-4cd4-a7ba-40480b8767e3.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 0xb6084c79546d57b3d245b764d4b5c011c8cb6a478e9d300465da0c78d421510a. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:23:02Z), 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/NLAV40700017.
Super Gave Tijd (feat. DJ Michiel & DJ Bas.eu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ba2bce522c248a19983ffc353564366c75b53e7f1596136efe4709cc830c8a. 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/NLAV41100010.
Op De Tafel Dansen (feat. DJ Michiel & DJ Bas.eu)
Hollanders (Dus We Heffen Het Glas…) [feat. DJ Bart]
Hollanders (Dus We Heffen Het Glas…) [feat. DJ Bart] [Party Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33a0af6e70b3e0d6af465aff5c57e5b734738e159a43baa4a3407ea5059c8d2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLZ291900156.
Atje Voor De Sfeer - En Andere Sfeermakers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a4a82e3b7e1aaba4cd4351238649f1319484ed79d689e6d21c432197a529dc. 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/NLAV41600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d03d5e1a28f90ec7e87d7a195b8100d1a593046c6dbd8ed895accd092da956. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/NLZ291900149.
Bos Hout Voor De Deur (Bos Holt Veur De Deur)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80ebddaef3bea88959536d45720532f97b7a250aef851d45b2287f1a2abad69. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NLZ292000082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2036fed4bfe7916e8f7db55a993e55a106f90ef8f78323940328b80fb96f4d52. 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/NLZ292000139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904e63d46f4be0dafb7f6fd18602da1755e7e76f58d468c01e5948f4a3f76dea. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/NLZ292000155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40eac89e4bcec34d0d9d328da5dda219c8fe750f0a3b8c666c962ce68cef740. 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/NLZ292100144.
Dat Interesseert Me Echt Geen Ene Reet (Barry Fest Harstyle Remix)
Dat Interesseert Me Echt Geen Ene Reet - Barry Fest Harstyle Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47634c7c08d91e917a62f7c2e0171ccabb52f78aa0d60bcaa95bdc0a0bb97492. 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/NLZ292300001.
Dat Interesseert Me Echt Geen Ene Reet (Barry Fest Hardstyle Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d582e557f27748e6f2977a18fcb04e6fc83336124530fa4841462eb7820ec2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NLZ292300076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40113663fbec0f0fecc5ad8179daf030c9e55e89d0d9284840031f2d20422a1b. 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/DELV42400683.
Liever Te Dik In De Kist - Altijd Larstig & Rob Gasd'rop Total Loss Remix
Liever Te Dik In De Kist (Altijd Larstig & Rob Gasd'rop Total Loss Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd104862fbd54426917450c6a04ad3b4ff901d0664501bf1593b5af12e9cc0c82. 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/NLE872205501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd104862fbd54426917450c6a04ad3b4ff901d0664501bf1593b5af12e9cc0c82. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLE872205501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1891276d009863c3aacf86404b463d95eed48e62cf5a9d381fc8aafd5b80215f. 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/NLW2R2394390.