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 0xd16b658fe54f0b48918b6a061cde76087a6690603e37e9130982469e8c640d65. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4d73eb73-e840-4e9c-b2c7-854971eba9d9.json and https://artists.proofprofile.net/proofs/artist/4d73eb73-e840-4e9c-b2c7-854971eba9d9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Voor het begin / God, die alles maakte / Dank U wel
Post voor jou!: Liedjes over het Oude Testament
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 0xd0be7a12ba75d6d57032a6ff191271f001d9507daa5a4024d199675cb7bdd31e. 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/NLG620616334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ae5745c526a2137254bc5a48e517eee68a31efc69187991e5f72da102204f8. 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/NLG620616336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe62b1d1efef5aa98972aa582e5d100ec325ca9bcb0238b130939f77e332802a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLG620616343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93f601394edcc9fa981ae6f2ca14c58e181cb21d73ea7183f4c2478c62546ab. 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/NLG620616345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a58d54bc9fcb551955a88979121038d9e7caf23686ad3edbbc68949098d3fa. 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/NLG620616346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be0b084d21baf8fccd2792bd74039250210454f001e0ac837db4c997238c356. 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/NLG620616347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4af0c1aaacd0d80e582a4e7896c8a1b6eb944d5d164342afb20d1c94b6f88e7. 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/NLG620616348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64fbfa24ea14b50a68cfb785ff6a2045052ff87c3f137a6039a93edbdb07cb3. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/NLG620616333.
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 0x6e1db32c72ccaa377408accab30ed5c2fcdd5f4a55c8ab35fc811669f898e06d. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/NLG620616335.
Abraham / Zou er iets te wonderijk zijn? / Jacob / Jozef
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5835c01ad7b06c8dec43e339e715900f0a3275225ca92a26dbf4316ba254881. 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/NLG620616337.
Mozes' moeder zingt / Luister Israël / Ik zal de Heere God liefhebben
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea29d6471f3398a88a3eb669234414da0add735361722a9d6b1fcb0a549c865. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/NLG620616338.
Twaalf verspieders / De muren van Jericho
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba8a2f72a61c354b40ea3851293e894f8f627e2effe49d57c13be03e6515ee7. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/NLG620616339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32612c008c75492e2fc748d014bf3997319328b8dfcaafa65c4148bf3c1b2f6. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/NLG620616340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x073f0989aa71e525a5108a4c6321586a5b9b40ba67351d26bf20f9a973320399. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/NLG620616341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ddb036e20a65aa0b47c6f86952b1d499c6211ed2a92f45d71ca992814da444. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/NLG620616342.
David en Goliath / David met zijn slinger
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe42efedc5d024442a6e4213d2aa72b2b0a0b94d86266f346b5f8dd24434d376. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/NLG620616344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5515a21f9a3c752754e3c1953861ca463371b0a22930055b2d8239b172343b94. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/NLG620616349.