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 0x0b2b45e07a2acae71a345aeaf82d652c69a7132c4986a08b1122ae2fc8ce258e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/21b66bc7-d52b-46ea-8130-979baa9f8f1b.json and https://artists.proofprofile.net/proofs/artist/21b66bc7-d52b-46ea-8130-979baa9f8f1b.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 0x4c9a2ace37013f63444814cc683db3ca3b2411c8f7d3725491f424aa3719a155. 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/NLKY51300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffe706b40ce37b1f9d24fffaaac4e3a2231baf967cd822ed9faab7bb4548337. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T04:57:02Z), 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/NLC5E1400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca5e29bd01296be9c124fb7086e2e1bb2b0451318a8def2866f8ddab6f47296. 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/NLC5E1400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a67ddab7b7b1039055f550bb06923eab0c1a71af379224a92165acc2531a40. 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/NLUR61500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc5bc7816c05fafe41aa322f8154fcd9eb8bea644904595e9fd8a799b9f0944. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/NLUR61600027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99e052f5e915bc28f81bcf73da455eaa21696e34e039806ac5fd6b6b1e022ad. 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/NLUR61600029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd0802a7acccb8907b69c8db796870af959ba7af750705602287b329176e4cd. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/NLUR61600037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff197c0e37f64f476d860c10b6f6ba00ed3e0ffa56e800d17c705dbdc6c6c484. 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/NLP6X1600016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03ae434f04f923c597151904b5162e9faef83861fb6d0f6ca8c8c33db990fa1. 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/NLP6X1600019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5169fe807ea3750efaf5046ea9a8476f60040e1b37f52d10b53cb701d6f1ffe. 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/NLP6X1600023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc219b41835fcf9f7bdcdc01b9a07b1a5999ab5302bb98394a6da1284692b75db. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:10:00Z), 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/NLP6X1600185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d194c7f9849317181b895dcf983e0912fe983f71f7e18f37ba4d99642d861bd. 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/NLP6X1600239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8408746664031dac2332e7bd18b1715abac012383653b3e949916dd113b195d9. 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/NLP6X1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf563969a9ce84f93435516f53a657f5b9c4d46ca9be7431007a3d2831c990e. 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/NLP6X1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d3a9772044673885060007b30cb3bbdf0942f2e71f8d19d14370790dfc0501. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/NLP6X1900001.
Paul de Leeuw medley (Live bij het Feestje van Henk Dissel)
Het feestje van Henk Dissel (Live in de Brabanthallen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c13caa5a8f62a085c136716b513a146346f7d267ba54e106ac885790ce5d2d. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/NLP6X1000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e7ff0273667bea120994df6b632037826492ebfcea481f619cc838a5fbc47f. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/NLP6X1000034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4c087ffd885dc09a4c9a81ea77ba8e61f4c57b1ce90db82bda050a814b2a1f. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/NLP6X2000039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5de4e117ee7bdfabcf566bb4fa2cf1ad800c04eca49a7b1f4aa451132d9e84. 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/NLZ292100226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19dfcd1535a20dfd15cc1d6b0cbbe261617decb6d172a4c87520907dca87fd33. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/NLZ292200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad89fe978dd1242666b565ffc3b07f1cf56dc04411ac567fc6469a43f919bf8. 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/NLE872226501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04475170cf21c214ed83c942fd1a5ac68424e9748aea1f20929a83019630f46. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/NLP6X2300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82da150d904910b5841036a9f05846e487de0238d39f4a7d0e05574c055215a. 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/NLP6X2300046.
Deed het pijn toen jij uit de hemel viel
Deed het pijn toen jij uit de hemel viel - Orkestband
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb49766ab689a92dfe5021fa1e0b83642ee95326d39b92f4ec61b31f544dcbb5. 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/NLP762500150.