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 0x9f719faa91cc93a5f1612a79177e68fadaf6f9489e3b980a124e3d771e58fda2. Chain 2 (Bitcoin): anchored in block 953701 (2026-06-14T22:16:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/75ee66b8-7683-4dbe-8fea-728ccebdbb43.json and https://artists.proofprofile.net/proofs/artist/75ee66b8-7683-4dbe-8fea-728ccebdbb43.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 0x976e32d4fee28784ce29175bea5c0124e8658c50c855c479c5ef26333c002333. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRKJL2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c5267bb1ac7670d9b6c4b4273902ef6848ec2ebc108f47086fde8796756f36. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/BRKJL2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f99f1bdf2963f881637c5f8143ff7bea1b4ec340dd332055e81630ff06ac70. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BRKJL2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f5da14b93600a419bfd3aee0ff17defa6b0aecddf70eed1c3bb6fbee764a6c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRKJL2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9883c7d7605fd7637d1c19addfb9f7baf823efece257bc38b31597f179488a01. 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/BRKJL2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4013f8da09f83f01df738ba3f2ad5de971a502bc28e0dc83c219b201e9eb18c0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRKJL2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00b99b708afb37b9d1e2cc35b897500551f4a0c22bd3c61fd5304b3f18049cf. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRKJL2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe970c17aae58a82217401ddc8a1620482532d385152ad8a04d98386dadea2687. 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/BRKJL1900014.
Barco do Amor - Tributo a Alexandre Lima
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa33c6e13f9953672e5e8ec8585593fe586d4461473e072f8373e0e52263ffea. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BREEC0800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d1a7a60ebca5d7c3175d96a4595354f6173a404ffa28a941299e6e39beba00. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:26:02Z), 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/BRKJL1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8649425113b5972aebd55367fde9f05444d37923d97cae19027c5fa31e08a808. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BRCT00600124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ff96ed7ac00f697b8fac979103eaf81755695398b464bae595ce3cd2ecdfb1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRCT00600126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3af3142bba5c58e9bebe548439ecefac474da0314bb8f7349d858298569099d. 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/BRCT00600129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7cc17048cbda338779979100512cf09b471fa03545607b94ffe00a14d91180e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRCT00600130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e33b675f1cbac422ec1e6f3fbf1e3ff76debcc98b4f528888f2635bf73fb0e1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRCT00600132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f5da14b93600a419bfd3aee0ff17defa6b0aecddf70eed1c3bb6fbee764a6c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRKJL2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb70149c70e47466ba7f4a0fbd90516e3df60a459a7c027983d135c42efd1dd9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BX5DW2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef5da0fa902986599abfccad82ba73707356973b204fc481b843b4ee31f8a4e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BX5DW2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e74c0f9340569b0a8dc23d1dc46d8963b3a198b28dc4f77fa8747b22d112284. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BX5DW2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d80c54c945d31420d666e1546b05acd5400b05c775919254cd24c5824ee61e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZTPX2398202.