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 0x9396622650f05d1e2c029cc79918801dd61761a804ee08d75e94afeef8ac21cf. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/71a50c7e-9334-4bb2-8b3b-30c577686976.json and https://artists.proofprofile.net/proofs/artist/71a50c7e-9334-4bb2-8b3b-30c577686976.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 0xd04dc1274c7c133ebc189144f3b481945f22b4bb4af7bce1f9b464686fa2b223. 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/NOFYF2404010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037204ffd110754056c17e8629752868fedba2afdb73e8b7a8197132ca735c53. 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/NOFYF2404020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2511ca09a11693e15af3ff6232b88b32f93dfd0685a460b78b69ebf8bf4e623. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NOFYF2404030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b75cd15dfde0541d0c65387fd2eb402b4cbe3f0589e8b160d88d9133409af6. 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/NOFYF2404040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c53159a5e9c7fcb8dc785150403f4c9b1b2b7ff535490e071e8160425fdfc5. 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/NOFYF2404050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2002f4bfd56559b20d61fcc80b462a55c38d17a9f170790f817a02569e5beb8b. 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/NOFYF2404080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9920d153cf8fee5a73ad3db12a25e3925a3fed30fb798ec0e9149ef17ff0cc49. 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/NOFYF2404110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3f8a2ed73f967c45602304454e44df85ff11323d4c1018a2e3d138976aa270. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NOFYF2203050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f411cb2a10010e3461f27c1631ea29f6d454b07d500444e5790772c6599a1e2. 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/NOFYF2203080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46508d48779b3f063f152cba474d2c4070034d10594b3c9bb68c1ff58032e1e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NOFYF2011010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d212ad199d13150090976fe3534298f5057a5e01e05076b4446614037001c20. 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/NOFYF2011020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab8638eebe57cc151c50f43be52ed2299bdc900c87ca25a07e0c1501cffd354. 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/NOFYF2011030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72be2726eeb53de66c898d06074ba1f0e36c7cf90a0a54c93f4b7e1fa6bd9aad. 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/NOFYF2011050.
Den hurtigste af 200 millioner sædceller
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd3622a56bafe385a491d1f16d22053ec1ea6cd02cb9e313daa8ca280a5b13d. 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/NOFYF2011060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a87ac86c28116babaef9f2bb570b47421cdba7ca00372e47c0e31edc7639413. 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/NOFYF2011070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa1ffc3eaa0d4654d095637580f5cb0035d9d62fe3bacc19f7af23a00b1b13b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NOFYF2011080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8261ca211e6644b46868d674e89af263dcb7b6509f7ce1ee7fb7c70589bafc65. 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/NOFYF2011120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2511ca09a11693e15af3ff6232b88b32f93dfd0685a460b78b69ebf8bf4e623. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NOFYF2404030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b75cd15dfde0541d0c65387fd2eb402b4cbe3f0589e8b160d88d9133409af6. 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/NOFYF2404040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392985aa67da3e16b4028da4897028606007944bcaa01118fe0190a80ffc7d2a. 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/NOFYF1907020.