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 0xf7406d8b3568dc6916808e42e87d84efa336191e23f15d77f1f4d3c284bbb748. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d1b13547-a5c7-41e8-a69f-c5a051c97730.json and https://artists.proofprofile.net/proofs/artist/d1b13547-a5c7-41e8-a69f-c5a051c97730.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 0xb6c1550f0895c7a8b0481d2e8158efddd2964bdaab12df8ca88c78a4edc9bc85. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/MXF170810243.
Alma Salteña: Tributo a Los Chalchaleros Vol. 2
Alma Salteña: Tributo a Los Chalchaleros Vol. 1
Alma Salteña: Tributo a Los Chalchaleros, Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfa5955fd3d5e29393160541c52e457072a396d5281a591fa3715c065a40722. 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/ARC851200115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5471228f379c939fbb01a76525038f49fc5a28ac93716d2b70fb2cb29fd7722b. 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/ARC851200117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1127f7e0a3afdc9472118c83142675f28c55c61b942e94cae542decf1fc58230. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:28:18Z), 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/ARC851200123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3569dc8a03053bb8f99fb306d7af9f652e747ccb24f9a19c4a5fe7cfb69d6288. 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/ARC851200109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59eb0c7c20f6bf72412a02f2516c1a853b48c3e4b054f8f370aac0da2c87be42. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/ARC851200126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed6d6c07d31fc84ccecf93932ccbefa716d6ac4ea178d581c4c6cf813162d30. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/ARC851200106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd258481cb22a04db453610c5297470012d23870bdcf4604bda0c401b98d3424f. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/ARC851200127.