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 0x544dff0334975828ca737db88f11b0b40684f10663ad73c548d06641bc2848f0. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7b00d325-e8a2-4de7-9b6f-e0220d7c1e35.json and https://artists.proofprofile.net/proofs/artist/7b00d325-e8a2-4de7-9b6f-e0220d7c1e35.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 0x44b962e3b2f356628038c18bfc698c4e23dd190a0f1a1324f553a023fcefea8b. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/SEYOK2306924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4ef56fa2e3e1072b4d63f604fe85a79a75c194a4fcc342923cadf866eb3f0a. 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/SEYOK2306925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f0435332f6d43d2f7e515a4aaf33f36e7d3137c415570f36cd8e53cd8ef52e. 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/SEYOK2306926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec447947aa37f6f804d7725d95ba53e9bdc795265cf398cb3d522132c3ceaaed. 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/SEYOK2306927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf198999050dbc8569acbbf3e08f75567bfd0199bbac1446eb7535cca8c3842a. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/SEYOK2306930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9bccd699902f4415a04047b3af04b3adaa5492887664214be922dd1d495e3e0. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/SEYOK2306932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17bb7fb00712fb5ad44c480283bac9f4e5a4dec7e88e6d239824a14f6928569f. 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/SEYOK2306936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c7c612f35a8bb159ee2261f53dc585183ca461227f60b3a15d8416769aedc4. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/SEYOK2306937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18d105989926ba7de8c20ebb70e3b4ea85aa2f1d07047b1b89172f59cc488b8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-21T09:02:27Z), 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/SEYOK2306938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d47922d841d5fcaaa685a57766d5abcb1949443577403113b117eaa6753ff8b. 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/SEYOK2306940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe36d23e8b980c6809b32690fe8c787c7fb727ccbc0c1f81e1ecedb74b83699d. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:36:39Z), 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/SEYOK2307372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc4748a6ed90fb4fefd89ce4c80ce6161fda1a6ade2fac67c66936e4c87d2a3. 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/SEYOK2307378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fdfde897713d6c96aea92dbe7ffa69c9b2329b6e733ef4a3f5fea0b5c062978. 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/SEYOK2307380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a507a401bd3d70af5cc96a98bdc32e0d1909273cbc2d658b18cd80a06e8bd90. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:43:11Z), 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/SEYOK2307381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf4e39e393d438a7c3d8a0a0a42d487ece0fd322d00f42d171a2a452de43e5d. 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/SEYOK2307382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b3327cee51efe191d094e67ff9c808e3d48d4da53aed68d29fe366696baa45. 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/SEYOK2307385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086753b9d1ddff7cfd60916c618a277acfe04517a9b1a0fbbf4bd815e5a89a52. 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/SEYOK2307386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b20e7b4c892ce14a2672e430c687b599bb18adfc051f5956a4122414d99a136. 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/SEYOK2307387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3acfc9e5aa037613cc16469dd28bce9cf42d1a1815a37be905e7e73fe03e985c. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/SEYOK2307389.