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 0x3bb6b0062e39b9c0c4bf9a2d14b07512cfd7374e51987423d48bae12d802b62c. 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/a1cf5937-cb1e-4a20-9db5-5ebc08b09610.json and https://artists.proofprofile.net/proofs/artist/a1cf5937-cb1e-4a20-9db5-5ebc08b09610.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 0x3432a99a72d3a6aabb023500fcbddfe556404c4459c927018506c646c16a5731. 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/NLS6R1716082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a731a18624075e9f534dc3cba806dcfda259d5dc9b49ac92e71bdd059063ff. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/NLS6R1716084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af4eaef10132f1a63ca08ed34ccd472e0340778d7713e9bd6f846f5f4f87fe1. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:27:16Z), 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/NLS6R1716086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2620d368b8b0eb1f8f33e1e8fcef65a3a5fb39b0013c09d87b29afc389da4dd7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NL1AP1922549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16857e9f55d8b03640544c0295f79d2419224c1165189dad6355084114c6f5ec. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/NL1AP2063252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6704ba8d9384264dcb3255dc52a5e8ce6ca089054873208a2ec39274dd82530. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/NL1AP2063253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc979c013d981fa41abce7202225914e1101d9fe5574c129d52f12601b4fb8f07. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/NL4NL2114443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec45c1823571abfe01d92cf091beea4a8ff63b98c8bc4159c02eefe4e7957d9. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/NL4NL2114445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c6e79c35a4f80300a1ea64b8cddd65346af42f581372ff4c259fdc3de75563. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/NL4NL2114446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4d79f4a0f40179d27fe0d04b10cb922387eaf0bcf6433f8043f8f6c76735a9. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:25:53Z), 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/NL4NL2177514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d384d5ebbd7640f9f05c74d52e20797c3ec1920056a8c305b6310fab62663e. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:35:38Z), 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/GBLFP2250900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2432f423622bb530b5ec687897c19d28c9914abab622def67ce711abec7a0488. 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/UKXN22230343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a041dd85bec2d2e90a9cca6c7a35f066dfe8b8d5d027bdbbb9f6f21786b343. 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/UKXN22240926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25da9460fc1a0b752f19d899c0ce36aa9726a30f34a0878cc87e4396c391e43b. 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/GX3Q92347794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72432285a9dd3c626c137ae2674b2f42d2da6cb4bd4b22fb1b5b63bb586f0300. 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/GBMA22329897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ecd960fbd6196b89d787f3ae28c5525c0341d93b766a4c2f1d9f5477d4a1be. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBMA22342607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32fa04e4081f8478a342c7c4f37f801fa913dc2f94712e1ab6e05805eb99ecd4. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:42:06Z), 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/GBMA22362463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd14c60d9e4660b56a3d03620d1c5be4fd2cd757c91bebff213119068ef1808. 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/GBMA22362464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0933dfd5b2968a656f5e4396fabb9f252569373d5dea1a89baa20ca85f2de9. 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/GBMA22362465.