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 0xcb51de63203b5c223b7aa91f5e46c382e26e81e907d9f40cac9d6377a142fe1b. Chain 2 (Bitcoin): anchored in block 953746 (2026-06-15T05:25:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a2b23081-3091-420a-af7c-550166e535df.json and https://artists.proofprofile.net/proofs/artist/a2b23081-3091-420a-af7c-550166e535df.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 0x0e1214718dd755d2e7b05649e1c2adf0a6bae805305bff4ed311eae5eae0ec9e. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:14:09Z), 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/GX8LD2425761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde86a7b499f34c78a57b3384c30b3172c6b8057188713a1a8251c9dcb7e8e78b. 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/GX8LD2483058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d69530d0a571a0c8e9024b2515bf4892747dc94c579a42bd1db2b6fd6d0bcf. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:26:34Z), 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/GX8LD2430514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed001f744fec8a5a3b6458b75138770b6172bb4b009cb182ff18d07ccc6c90c2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GX8LD2444356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695f026d4adc1fab7d999c205e73872e2476a41489b5849fa362f662fcfa4362. 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/GX8LD2441338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689e25ccd57b64b03e9978441966a8f7ea1abe106a027131a1459a531652ccbb. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GX8LD2415394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d37d27e1da4d7a335b2742b143922ccfc661b9a012a2249fd40c40da0a0503. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/GX8LD2427407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73a6ee8d59c75309b3054453154cc23a5d6a72b0f6a1cc0874aedaa36d4f1fa. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:08:36Z), 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/GX8LD2572200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6a2807c04e1c4e2dca0d3596f2344f46550cb90dfbf683fdf9b4ba0b0490be. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:20:48Z), 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/GX8LD2519923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47658c4bb2a5948f2340c198875e45549690f6b54376ef6216d57a1e8ae48e68. 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/GX8LD2520389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb9315c1b65f75a564814d7d3a752e9ffa1075dbf8c2cfb3f0a046afed9ad99. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:28:43Z), 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/GX8LD2599412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53517dd1ec5b9308cef52225817d5af77e773651ceb8342746bc048cf7211804. 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/GX8LD2580299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ef5bbb27b513ce21a9ccd51429e106a1cfbb169b31a419cedcf1734da2f4a4. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:04:29Z), 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/GX8LD2568795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12166a9c3f1585de80b078ede1eed571ec10460c8575ce0abe969ee854a9952e. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:07:29Z), 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/GX8LD2563990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14bc3351d5680debaf8a4ae22fe24ea6e3e9ceb13d2ac10c630c4e61cab9942e. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/GX8LD2593134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a73d313cee781aa46fd708097ec3af906de280e87d022a9f49813168121032c. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:08:01Z), 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/GX8LD2542885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676d7f09202dd80cfc3e64986f4c8dc4fb6fd2e680ce3465803bcf0b2b9d2303. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GX8LD2511086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362c6ce542e4e675c1dbd80473cdeff110239f35f99708ca6b5a65786623b016. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GX8LD2508167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2a0320524957d35d67cb65e5d9df9a1671d9c8de1b0e525fa36b7a26697b2e. 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/GX8LD2570092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2ae03a633002165419628c93a397a13fa91ee6da0b1ca6725d060dac047d52. 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/GX5MX2515743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7102cdb402ad52e54b3a6c51b37052e46ae42df25d81cb4711ea853c1bd95a9f. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/GX5MX2570551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb060936fc2410a7f3cd410a019de8444c9efb2a357fea72dbcdb5f28f56557. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GX5MX2509000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0d2a03cd24e9f2a91d4a0797fea9978dc9d08ae694eb9286e0d90c8cf59f7a. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/GX5MX2540655.