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 0x0b2779edd8686e3e17e189c6f0ebd19e540d13d78a439e8cedae4bbb14d1d7ed. 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/75771d08-bd6d-49c3-b334-3b0f5e14410a.json and https://artists.proofprofile.net/proofs/artist/75771d08-bd6d-49c3-b334-3b0f5e14410a.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 0x54e3083f6fdd2f5991b0b85502ae5427bb3e83d0abd351c5c875aaef4f3de0d8. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZVEM2328170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d2d4bedf0032e9b157a61a2fe2c422c83e95ad703884c4266cc9c42dcb525a. 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/QZMER2390569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5757009ba9aeef7e96110b2eeacd7c19ffd680cc71c24bc2b14573a65bca317. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZVEM2374759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5757009ba9aeef7e96110b2eeacd7c19ffd680cc71c24bc2b14573a65bca317. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZVEM2374759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0130c105d7ff67e244b8fcbf69043f45e0e907940b3d8c57d20a2953b41ec6. 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/QZVEM2363452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26959a772027cf0f641b958986a78171d3033464fe3e48d0d5be98c534a461a. 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/QZVEM2347110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89712fce34465a51bfd5b21d1bf8dd540db244bb9309060e3cdde9c843e6e76. 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/QZPEW2401569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609133e513616ca9e502f4cefb61c96bd3765b6f0dcf6a6e6b98bfb46c8aa32b. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZPEW2420104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ac26587baefbfe4737d8d38dfb04d377ecea83123052d1dd2694e918d39748. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:09:17Z), 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/QZPEW2427148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f9efd7cd726134a8aaca6ff8e6f9e0c31300282b2734b74e24ec06e89c7b80. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:34:13Z), 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/QZPEW2443001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f9efd7cd726134a8aaca6ff8e6f9e0c31300282b2734b74e24ec06e89c7b80. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:52:09Z), 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/QZPEW2443001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609133e513616ca9e502f4cefb61c96bd3765b6f0dcf6a6e6b98bfb46c8aa32b. Chain 2 (Bitcoin): anchored in block 957632 (2026-07-12T00:10:15Z), 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/QZPEW2420104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644a73f264b94c24e91f61be84a8103cdd4909f7f3fe4a3e1646f0d59109e4da. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZPEW2453708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ac26587baefbfe4737d8d38dfb04d377ecea83123052d1dd2694e918d39748. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:10:01Z), 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/QZPEW2427148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5835640f56274a679b59c6a8cfd70db28847bbe69baf7ddec8c1cdc5240a60. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TLVEM2472971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b94deee88735301ca6c983113bd9dd2bd878bf2900d5981dbb845ac58ea279. 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/QT2VB2425862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3839dd247d6db4f686842f74f522249ddfa5074e28e5742d958d1c72cf4984. 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/QT2VB2455334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0cbf938fd6729d169b6e1ebe79fdc2b2649f278b55dd11a39196b91211d3b2. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/QZVEM1807473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1b77064ab74b76fef33201446e41831aa1d02c6c7bd843e70ea27fd25306d8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CAN112500536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de7c17640146ab280f84708bbdeeb26c8928352ad7862fbaf1e532387576d62. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/CAN112501312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0854a9cd837f62accbd7a1de3d6a7680daa37f1d5462d67e482a9ccc73ab4fee. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/CAN112501567.