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 0xff8f20f95fb10baf8ca2b321df6bb365476d4167e0ecf169f637fe8f62827739. 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/dabc8710-972e-4bcf-9109-7810f1ebf16d.json and https://artists.proofprofile.net/proofs/artist/dabc8710-972e-4bcf-9109-7810f1ebf16d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
If You're Happy and You Know It (UK Version)
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 0x3c9475731051b7da2697c94b7c69ee10071fc96a3e246c254a141b09d07f2cdb. 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/DEC712100551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a558cfa0de1406574212c184163f630421c627f36fbaefd474700be311020d6. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/DEC712100553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b5eba58fd0e13ab920d04cf83045977ae46dd3d68e941ee49c1467c277ec55. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:47:14Z), 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/DEC712100554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb472401b501eb2f04fd15777f49c8d52e1f42a7b15b24020901422babefa6c28. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/DEC712100555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24df11106eab3ef1a417b92d60928474465c1078f20779cbf624a76f89840ffb. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/DEC712100556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa19711cf21525652eb29db6b29e409eedeb21f9d388090a45adda651a1548c. 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/DEC712100557.
If You're Happy and You Know It - UK Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8f6afd7977651bd2b1325d9e1e7657437da34acff9b78788a76468e0bdc4b8. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEC712100558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422111fe7204881147c09cd74ccd7cd21920078f01dc44a03ddf72dc641d44a0. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:38:38Z), 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/DEC712102669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918b52e01f06d006372017550ad573095255014bfa3cddf7670992d90bce6e0f. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/DEC712102672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c69e5cdd731450d267e266c45a0dd8ff21c3f667cd83b159bda0bd9844f681. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/DEC712102675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2795e77925ea05f1941c9c0261aee7676c7b63cc61bd26935ff2c10b83fba3. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEC712102678.
If You're Happy and You Know It (US Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea742af896c500c25e03baee628fa46500f65b31ecffd0641fb8d0c06f902b6. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEC692101399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49881023f922510c4c17fa38a6b3651d017e3549b79ca221ea9be439e244197. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/DEC712200063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6871cb05abd44f7f13a48bff56752b975f6ccae3de77efb1bccbc27dc72b7f8. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:09:51Z), 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/DEC712200069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10925738989f5fabe8f0e7b1ffdc33455b18a5225b5c66452938f9b3bc575275. 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/DEC712202317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767d4dbd85701df0b68d8a150e96afefba20fe0b3daffd02b6256f2610b4e40c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEC712202749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8affb7247b4d0a18b9fc4efc718d3689dbe11e9bc480e42332c56d7b63f9da65. 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/DEC712202750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3256acb07b0dabaaff49a5a4db9c93d9c83ed6fadc0925fad164fd60ac266fef. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:56:38Z), 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/DEC712202756.
ABC-Alphabet-Lied (Nursery Rhymes for Kids / German Version)