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 0x5e1204794702e97cf6ee17432123d902c2db10d09d78741649e351b18e496ef7. 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/736f113f-935b-48e2-865d-14205623a5f0.json and https://artists.proofprofile.net/proofs/artist/736f113f-935b-48e2-865d-14205623a5f0.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 0x7831799187095372d34a27b97117012ccb52ce4c673ea906977cf3f289c2ba3a. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:57:40Z), 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/TCADW1881904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035443068bbeec3a26eaa29b51c48587d010957fa06496a101525a11da509e72. 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/NLP761900237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55fe5e6d55d6825639ce17a33ae1b3511208775025b9847eff2b6c7b5f36a516. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/NLP762000055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b990d3fe94360f8dad9ad612a27dd13027bc648d26de546ab4d9abb3df355b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/NLP762000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b5c3faac8a403ded08cdb70fb2d9c25a50c70c68453e37ab6778d902bc9af3. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:14:59Z), 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/NLP762000085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb51fae95e7fc6907554e65ee6a728f1248362dae1f1e7c0f62e5235476a1f4. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:59:36Z), 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/NLP762000177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea15c107902deda3ca19c7c061a41752c59073d11ffb5b564133171fe9a8297. 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/NLP762100043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642de8f71f1366453689dcac61adacdf0a0319e7ddc9df9987a150114f80add0. 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/NLSU32200076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f10efa4705f5159fef128e6d3f2574b0fc05eb1a19bfa40506b4a2a9efa0aa4. 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/NLSU32200098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132a790234ae12323bde722886fa2955efaf5be8aad874981b8212d8b147c74d. 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/NLSU32200089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9549576582df531bcb9e593f736be5fd8f539858ab4e48b102961ed3f5032c8f. 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/NLSU32200091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4c3f15ade665a18b00cadfd6e96dd05632bb20dac437f1975fbc43bf8c0031. 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/NLSU32200078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb9e6cf87fb26bb45953874e1d6073abdabe59250dcdb74fbe256a791cccfe1. 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/NLSU32200112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd548b55861f10fc265cc1eaca51bdbdcb6496d8af53511049d7762e10f7a7289. 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/NLSU32200114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee95efd2c6ffa9c4648855d22d307ae865fde57bc948893607f9551c927b7687. 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/NLSU32200120.
Beste Zangers 2022 (Aflevering 4- Nielson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9549576582df531bcb9e593f736be5fd8f539858ab4e48b102961ed3f5032c8f. 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/NLSU32200091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642de8f71f1366453689dcac61adacdf0a0319e7ddc9df9987a150114f80add0. 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/NLSU32200076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee95efd2c6ffa9c4648855d22d307ae865fde57bc948893607f9551c927b7687. 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/NLSU32200120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9549576582df531bcb9e593f736be5fd8f539858ab4e48b102961ed3f5032c8f. 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/NLSU32200091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4c3f15ade665a18b00cadfd6e96dd05632bb20dac437f1975fbc43bf8c0031. 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/NLSU32200078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6196f6439380b672905e44965b22fa5e1b0c8a2ec96bed51117c757689da16c5. 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/NLZ9L1900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc9d8719a60c8eda6cbd52fe675a4df074abb5b3c7e61c921f8f7903bb33dd2. 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/NLG902300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe80b50435a181467b5369e982e721654de75a2fb889aee14c2f766b995238ee. 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/NLS5K2000133.
LEMONADE (feat. Chip Charlez, Sarita Lorena & Revie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef9616dccc83172956a6d57e3ba906b9da8c9c301613b59a5aa989da4c72d1d. 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/NL71J1800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5368b2ba6c6b1cb175f2de8c8e41c0fe0d9557ca5dc1dbe6d3e4a47c4239ac2. 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/NLG662000815.
Beste Zangers 2022 ( Aflevering 8 - Duetten)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd548b55861f10fc265cc1eaca51bdbdcb6496d8af53511049d7762e10f7a7289. 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/NLSU32200114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee95efd2c6ffa9c4648855d22d307ae865fde57bc948893607f9551c927b7687. 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/NLSU32200120.
Beste Zangers 2022 (Aflevering 5 - Jaap Reesema)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4c3f15ade665a18b00cadfd6e96dd05632bb20dac437f1975fbc43bf8c0031. 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/NLSU32200078.