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 0x6fd7f7459eb0233c2ce632946c41c7d2c6750565e551721e5fa3ce5d349361d5. 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/ae23ca77-cbf9-4536-abbe-3f53161bb192.json and https://artists.proofprofile.net/proofs/artist/ae23ca77-cbf9-4536-abbe-3f53161bb192.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hoe Zal het Leven Zijn voor Jou Mijn Kind
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 0x69c1283330d95954fc8a521b0fc046c46c50525f0e5aa646f5fb84b0ed303a10. 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/NLB082300130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5bedec37d08fd9c2d7a3f4db3924429a7147c328826f3f6ea33dc5cf826ced. 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/NLB082300132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a2110eca506a98b3bf59043703b0d3a6731c1f203b913d1089a612194fcce4. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/NLB082300138.
Hoe zal het leven zijn voor jou mijn kind
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7755a92a31a8e22206357c9e393b0527dbb9d9f2c9ae4b91686f411c636825d4. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/NLB082300144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ee08482233800d3a71b6ee63098f211c5157e57d25bb06b1bf126d1f206fb5. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T13:14:47Z), 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/NLB082300145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24961538869a54040c24be9f6760ed1d79a867d05386ce815aa6b5ef475dc5a1. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:21:19Z), 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/NLB082300157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a31a8c32d77e474123bd4d7f5fa87784700344658848ce8899eea5b22a4738. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/NLG340100180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b56e6cb1706cd229d9659a05b7daacd8878081a533348935e17598c5608a332. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/NLZ422400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cbfa034ce290a545e55dbdcc7479f656995cff4d6f382dd935f0818e8d7306a. Chain 2 (Bitcoin): anchored in block 957810 (2026-07-13T05:55:46Z), 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/NLG340300085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619c7f4ba745a4bfea720331c5c074fba877931da57811c97ec7d345cb770da2. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:03:51Z), 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/NLG931000148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed729dd6174262c2e0962685be7540e6f3f28e0fee2f6a39c4cdac274f95ba51. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/NLG931000156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9a1da908b10243f1d63b63c2370a380cdc51384f83ba70e96ee072d49fb014. 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/NLG930500161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeefab35600ec6da1f40d375f51c9a2889e1b366224e9f07e90d52870835e8af. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/NLG930500162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8d9019498c739dc46e13c997705753ebca2c5acf2b4ce661b2f0efd23f220d. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:50:53Z), 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/NLG930500169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47af0caf27de13e7fbde15236fd1494e34df02639ca7edb26b010e3024e691c3. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/NLG930500170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8316bb39c538d69d9ac9a2814a4786b0cbd3e10dbe154638b968532f097f63b1. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/NLG930500131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9c1eb6d12c2e2a7a6fa9c5ecf175b7f3e49f21e4cbf6a026321724a7ad9f3c. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/DEA541302410.