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 0x4c983a23a6336582a454dcb9623df4995fef12811f4aeecbcebe75c58ae088ca. 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/0ba6c999-eedd-45a3-9aa6-749e2a31d66d.json and https://artists.proofprofile.net/proofs/artist/0ba6c999-eedd-45a3-9aa6-749e2a31d66d.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 0x8cb9986e83221e893c353a8026f72d49bdb5798f849df8e1a9a35034a9b049b4. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T08:25:06Z), 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/NLN071500051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19dc165ccd994b032a176ea980cc273805063e35ef7e57c333e2cab3ea7bddb2. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/NLQ271700519.
Ik Leef Mijn Eigen Leven (The Voice Of Holland Season 8)
Ik Leef Mijn Eigen Leven (From The Voice Of Holland Season 8)
Altijd (Always) [From The Voice Of Holland Season 8]
Altijd (Always) [The Voice Of Holland Season 8]
Papa (From The Voice Of Holland Season 8)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab07b0e28c9acb6eca09096ac1d484847f7f1275af5cf03731caa64d2838a3c. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/NLZ291800040.
Ik Kan Echt Zonder Jou (The Voice Of Holland Season 8)
Wat Zou Je Doen (The Voice Of Holland Season 8)
Wat Zou Je Doen (From The Voice Of Holland Season 8)
Ik Kan Echt Zonder Jou (From The Voice Of Holland Season 8)
Geef je weer aan mij (From The Voice Of Holland Season 8)
Geef je weer aan mij (The Voice Of Holland Season 8)
Geef je weer aan mij - The Voice Of Holland Season 8
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7366ef4429e63cbbbc3c910369a6b8899b589659070341f174bbcc02e6c0e4d7. 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/NLZ291800088.
Dat Ik Op Je Wacht (Beste Zangers Seizoen 2019)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde88a7a4afa2a92f8c061092735980e89de2ef589ae42f7ac699c6d4ca0a7907. 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/NLSU31900074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda406cccdeeabb37607a6788dd3633b1ccb69b3ebb101a1d27556e69ad0142b. 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/NLSU31900076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeafa29c22a32603b02b39ad612cc9b7f39a60e9fdc21d298fb72ac931f7a88f3. 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/BEB472100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c30d758c30396b86fef5b3e966c8b822d3a644ab09f09851040bfc22a2a633. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/NL5HJ2100109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a982b4a43fea62d45643c93b8b7a96aeab087a1de32c2f353f22d29fd1a3e3. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/NL5HJ2100185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd77ab66e0e7cf507ce6e97153e00befe18776e527d4b48eed9a2ea43ee9519a. 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/NLHN52300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed9e6096684b6a19a6642eeff6cdd979cfdc34fa3b7ac9757260946a8d0788a. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/NLA6A2400015.
Songfestival: Nederlands Trots In Een Nieuw Jasje
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7e38d412a9eec2c0899a619d051ee18fbb350e42ddf5b7dd91c329375bcd06. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLS242100221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1b7a6fcf7da210b64b34c14df587cc3e825d7ddb8d02443a0441b945d78659. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLUM72200079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe191fa9ffe4907e0f8e8a92d7255f96d03153618faa8bad01c5bdebd203552f9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLUM72200082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda406cccdeeabb37607a6788dd3633b1ccb69b3ebb101a1d27556e69ad0142b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NLSU31900076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975ef99e18529dfde53136c587365d1bc6eb6aa3ec49f3cce91a5fc6444c6c5a. 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/NLF922100322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e6cb961766e0b934d9ef8fafc26446e6f4eff67e0dd2979cfacb8320449b1f. 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/NLSU31900058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda406cccdeeabb37607a6788dd3633b1ccb69b3ebb101a1d27556e69ad0142b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLSU31900076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c78446e12991fa61bfd3f35d7483eb9785cb0c5baf5bcc69d83e5ef4b2257b8. 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/NLE872513012.