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 0xcf031d8aa25e4800495ac3465b16d126ac244fb6b9f1e33be8d0ff5fe952c91c. 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/404a318f-f1c2-4dad-b9ef-6c33b1531a8d.json and https://artists.proofprofile.net/proofs/artist/404a318f-f1c2-4dad-b9ef-6c33b1531a8d.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 0xc4dd453980db1ab13e461244b9d6e2c0e26fc6b33a8f49c7eff62d9e46bb9fa6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MXF160102195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7ff640e22c5fbff6f014161fc50bf98ecddc20263745ed0395488791bb10d4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MXF160102196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55e3858e4dcd56a966c620205b62cb23b0e2f402cc85462d3c8c3e447483c76. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MXF160102204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2fc837641b7d89af879c429dc404cc2337aff3015f6d804edfac288c7436fe. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MXF160102205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b957dc4fd7bc9e45f0c80c6aaf857e16f7bb5dec13006a720fdf728118f189. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MXF160102206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2c9328fb9156453aa27229c8dd92f5eb84a00c9d55f66ee571080aa6338913. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/MXF160102207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c0453ba9e073629868add513b242aeeef25524ba2e699c6f8d97995b0e7e08. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MXF160102208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1437e1a7d43a954f2eef59e338e6e7e886ac34038b5c612655c799c4fe54b8e2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MXF160102209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8374f899df366ade888e41a11b34df64a229c467e6fab7fbe6c168e9d3e3943a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/MXF160102210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0a7d6dc0f69ce768cb2cdd4873d0bbbf748cd50dff6b01120a68234341a603. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/MXF160102212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff219ce0a74cfe5fbd2f5886b5bc50a1df85bf000b0d1e6dfc3af475d611fe5d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MXF160102221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1abe0c8639b750629983e0ac91f180bc155241f7a8bd5a2fc5012e67ff98a486. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MXF160102222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13779463311743fc3c9107460345a4f6926be64eef23923a7916fe910449fb6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MXF160102223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b0cab98aa932a301d3a98c2cfcca65d4582c58055889dbc8c8135fee6debb2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MXF160102224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19804b6c238acbe4bdc294a64be66d0ad7b3be4b5d95c37c98ce50d99f083f44. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/MXF160102225.
2024 celebrando la posada tradición mexicana