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 0x5b81ff7ec60f713bc44d3fb5824b0476c5cda7901a8fa285d3be809525725898. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c92f0fbc-d83e-4fb9-a07b-e1a554543687.json and https://artists.proofprofile.net/proofs/artist/c92f0fbc-d83e-4fb9-a07b-e1a554543687.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 0xb423fc4e9ca2e0d0a62a6bbf7c2430dada27b60d7590f90131168bae022f2f34. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/GBMJG1613821.
Reggaetón Lento (Bailemos) [Piano Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ced57de42a5ed5c11f66959018df1503a09c9d2ea4df4cb4310ec77e279277a. 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/GBMJG1704797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628c4b9d96b65a7c19047b2e6bd792dd80301bb9feeef55c147875460c2a6629. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:48:30Z), 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/GBMJG1706755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2e17348bebd6608bdf3569a2a6b5bfb3d039b4e3e163e404018f533660b0a8. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GBMJG1707507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe450280368cc231fa616284fa99c222280f76163dd5436446c03b995d2764bce. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/GBMJG1710437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf886c62ea820b5ec718c19d2dcfc73b775f3043cdf11300530acbc2064ece66f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBMJG1717403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064bc1c262e4ba89553e773f272eb893824b8daeb9a81f033cd232e1fb503c11. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:36:35Z), 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/GBMJG1721167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9092c6edbfb9b92e74f7da76f832b92a97d241c5d20604676e329a6905a42bb4. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GBMJG1719433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6369c6713b82c8d6a81b23bf8efa1c784bee33caff1aa7b4236f1c94be4b9957. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GBMJG1717000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a866595343e9f208a1a8bf6579f19b217cdb43397c30e866ef40c834f4e8d45. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GBMJG1721171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914976111fdb391a108a7850671f7ee4fb2040fda4e3b3f0088b9222b525f994. Chain 2 (Bitcoin): anchored in block 957730 (2026-07-12T16:41:26Z), 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/GBMJG1721172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c529f116a126d93279442faef65eaf2aa4fc757b92142671085ae4e7b9d5e88. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBMJG1721174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471f717d86193d2989bc7975f857b85e52fc60b53042db0cd1c0a95a6a225e97. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBMJG1903984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0b32f45e8fdc35ee979ddff63f0be82ec9e3af75e2f9940f294fc22521c3a2. 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/GBMJG2004685.