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 0x32a4e33d31da150da93ee1f5ae66260106cd13ca5922ce90b78d4e8d3a61cd25. 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/8ea1dc13-93cc-4acd-8e4d-0d16c7a4a0a1.json and https://artists.proofprofile.net/proofs/artist/8ea1dc13-93cc-4acd-8e4d-0d16c7a4a0a1.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 0x76046d36cc09d9d727b35e2a4355dce34da2886c235b0606b503e1aeb5f7f8ba. 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/SE6I32481243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c41c085beb77a05b1cab695799516b6df5914df12c6f92a03d813fab01db056. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SE6I32315792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a308be906107e754ee94b13d51b80e7d0c51cb71be761a23f97e7036e7f5133. 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/SE6XY2240815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3716ed5a0f8cafdb7ec79d9bf92b535a9172def514b2fcef6296c4793f0e5cda. 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/QZES62379540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef6e1b44d219c9b8046a95525bb8e8f4773db3177e60fa922d143fb31d32581. 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/QZES62379541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f6f891e8b124288f90e618be2fa835b189703f0f87906d8cca452076326a2d. 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/QZDA72334235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8455dc4f8b5c3db64f4f3e9574f3c5e391c150e8b036133609eeecfa2a776d. 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/QZFZ32264039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99587550453d961b2af0e19a26916668df0f082a33dc40898155214c8207716. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZWFJ2454313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62a379a31ae7e20c9db7170f740dc4ceed2224adfea29999e5c956d6339477f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZMEM2403818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6cb24208a204aa5ed5d3df250f111663a8dd1be9abed41403b63fa052289a7d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SE6A92368571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9d85a0a2719566f1b12e8dee0835be7e8911a2cc5d0b7aec3b7edc869ace40. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTAX2300424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4f5c3feb421ea8c1824ced9faab4e9b4903aaf8a4e9b9e13fe43a43ec1da7a. 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/QZTAW2398510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a42c379341a517825b142e20953dfced36c3f43de4a7d21ccbc95df4e64ffed. 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/QZES92352055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a3b2f14716c3917742aa8f407d6afefc666ec96a320f83b627532e6081cba7. 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/QZDA62259035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c41c085beb77a05b1cab695799516b6df5914df12c6f92a03d813fab01db056. 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/SE6I32315792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4930a1ce42978852ea8689b5d3ea10754d1ef301b9982e5e474aa6748fda7bfb. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZFYX2151423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c0586a78033c00b4ee13b02b0bdd3e18ac9de6ea6ecacc525196263f3a615c. 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/SE6HN2413946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1316879cd480ef69235bc245c79b0f955ca8ea9f7e2cf23de907373832282b. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZDA52255688.