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 0xaa0c98c21dee3a97e3f28414a97d0227b1825173940a32a1470ca77234b025b2. Chain 2 (Bitcoin): anchored in block 953694 (2026-06-14T21:38:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6caa8064-61fa-43ff-943d-47a765165650.json and https://artists.proofprofile.net/proofs/artist/6caa8064-61fa-43ff-943d-47a765165650.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 0x69d5cf3dcbbcf28428f2bd786cd5d807cd860aace2d878707d082d1f9ab55471. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZW9K2231165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30d173e76e0a8a205931f337a1c74acb31d1709761206d391df0f4f0a9a9ae2. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZW9K2231166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9a65639fa0e0807396f5bbf93d6156efc1b9c6fb0ac996327853b4337600e4. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZW9K2231167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9e10ec2fddd4becfdbe65de539ee0ab3bcb65f685f3e1c98a7fd56dff697cd. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QZW9K2231168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc769f51ff136801073796a7c5fbc6f340d8d0d85f3159bfe3295eaa13a74591c. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZW9K2231169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5b127dab47180ecdf513e489fb4c290f97cf0104bd3c93db5760bd669d8fa2. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZW9K2231170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723d0d28fce5907d34ef94a3ac19c723bb99d9960739a6e670bbb5417cc9e787. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZW9K2231171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09bfa8c85284f666348cdace230de1cb9bacd74fcfee82050e81fb206330d971. 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/QZW9K2231172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa991d7825e19bfb9f719f5a1fb3cbce71268d4d43be2688b98610260ee292427. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZW9K2231173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabfb687e152cf65e705284df7d193ea971151543f01615caeaf19c37cf7c0c64. 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/QZW9K2231174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc5bbc818ed71b9368953edaffdcc40ed8b0ad3c66e346bfc070a206d48c755. 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/QZW9K2231175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68158b1df1e05c4582f714d3083fa32ff1b68df50d8bf059c76140b42b83b4ea. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZW9K2231176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71eb8192c8403a387c24100c1c5ad83d0914d26778ecbf91f0acca9e677a34e3. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZW9K2231177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3394b7b3123f294f527db48eabb65dfa7facca0ec8330db8362e1549f0e92846. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZW9K2231178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906bab5b2421f93048b0cb2cdddbb3b496fc75909e366b3800b69e553639bed0. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QZW9K2231179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574d3b0b4be91435b554a69bed4ea1dfc81d0767ad11320847f618425b4d9deb. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZW9K2231180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed433592368581f4f90eb3f3aaa632c9614ee6b6f9ef0c143d3850690c75c72b. 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/QZW9K2231181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329dbfb62952372e5ea6c64b15312c7afcd5277cc87ba6ec3f6c8d7f895cf3d3. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QZW9K2231182.