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 0x05bedd5f3643786f15335c94b745eb73b7e6fcbc9fdb39d9a503f3adc97fd4d2. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9aa8916b-4a6d-41de-8816-9a7c174c24c9.json and https://artists.proofprofile.net/proofs/artist/9aa8916b-4a6d-41de-8816-9a7c174c24c9.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 0x84f584ee700c5b54f1a0ed14be5976be1fb80844d3195138f343a414320e991c. 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/CH7812180343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51fbd0986a420c1e841e01a93440d8bd4e442564bbe0ca1ba45a86bf0415787a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CH7812180345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77a4bd98be48582815335cfc6adf5b04e554864150614951618a75663e94ac1. 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/CH7812180346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb152a930844719e46f0071e545731146869dc9858d43f6915f3ed31699ece3. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/CH7812180347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8705b5a44053468092fccd153ff431067dc99dcb691051fd92be7352fe23d729. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T18:19:57Z), 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/CH7812062268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0a90f91655eb0eab44678099d49bff5861554c10d582a8b3331371405fbc0e. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/CH7812179227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b623980dd7f131513601dab18e2c42478b0ecaf91b9c478bb5625f5147e09e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-20T11:58:06Z), 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/CH7812192056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe267056c906cf208796ba5fdf45079faef4fe591a7c72e677654284aa39a50d4. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/CH7812193655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84fd0cbe457b45e89879b5cf5f5a6c0b3b8c435a77a2d0ae765f150400e6d8f. 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/CH7812197731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497dd90f320c424d0737d78d9ef237cfedb68b066e197942e9cc73feb72c7c72. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/CH7812224625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0912f8bfcfdebf96988f877596d04ff18c76e876e11914111b0f05abc3adea1. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/CH7812232767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d11a4ae364b9c7628eef06165f181dc2947968a9e83aad0b4c8e28041dd59c. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/CH7812346681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20caa8876a6e4da5deeca1609f59b90c398b77f9a080e0e69df71cfdc1604928. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CH7812355098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29745b2ff4a4f511f1ae285d5ccd224b2e6c0e916762ad5861236b2421a6df14. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/CH7812362445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45722e50b51ccbcaa3d19076c2f89abee6bbd46e4e0f97c1a1b4a162ac2fe0db. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:23:13Z), 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/CH7812369488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b9d43a88aeb60165e1fd9849cddf683f4614b09faf023844b75ba28832c059. 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/CH7812403218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c833348d8a3fd28b17b88792afd2ef3d6eb756ab6505153c31d33f58fc2c21. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:42:16Z), 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/CH7812415763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ecd2e9cd0b4604dea5eb438dba124ee6e0145dbbe3379b5cf483908d26345bd. 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/CH7812539934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bbfec217b7fd00aa2c7394ea4d2b0738c820d0403abbbd242a5040edbfeae93. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CH7812539146.