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 0xede751ffaec8868914002dd64d043625f08971953386d665ce64e53684f76e16. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a9bd7fcb-4b85-4775-999d-ef728bd93e0e.json and https://artists.proofprofile.net/proofs/artist/a9bd7fcb-4b85-4775-999d-ef728bd93e0e.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 0x38da42177b0456c13b7c6bfd30188367aaaef4bf9b8ad36b0c6113c63ee5dc4e. 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/BRC832400219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18314fb07c7758d389cc4968db17a10c50f585c0909944ea0f444e962f887c63. 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/BKURM2400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c48151acde4b20b4d43ba821a52e0a289e9e8add5ab1a6b129bc62a7795059. 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/BRC832300212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e15bceccb5eb87ca1467ff28d5b949a22f00d89aae8717d7df3a10ee2a0c487. 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/BRC832200142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5ad3e01736453ef5952f153cfc39ad8ff9b1a457fb8b576b952d00c4857f88. 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/BRC832200146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81af359d0c1e3d86433d3eb90fb8deb29204c4d9ee6367b8e746eec5303cec44. 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/BRC832200181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa90e63592c8dd8480d734b76f6fd419ecba19ff02884bfdd49b40bc10981d9. 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/BRC832200182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae3517d618bea4a58aec1a6494989906074e2fcacd657407d6d9b15f4a0805d. 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/BRC832300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff00521ac78ba541606f7d647b7e0aa18ec4ca6e3d7b692f0fe21a5e650ba7de. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BRC832300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1459e5c90bdd7f2e1bd7b14c708105704f2b42b91b8ea90984fe7c2f973ed3c8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BRC832200116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1d630cb4f75ef8ab8e9e8af2e5878f4426bbd42c17d1c68d0800021b39aa1a. 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/BRC832300206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9840093373724cb067f8a252595998fd5cb800cdafd871985d48f7dd06e8822. 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/BRC832300207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c48151acde4b20b4d43ba821a52e0a289e9e8add5ab1a6b129bc62a7795059. 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/BRC832300212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd472eb9e3a08fe0b6a980336cf57f95b0997ab794492acea7f0457b6c446b314. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BRC832300208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c63896e9cb90673b39b7cdd2f9fdb526b6908466e9a56081d25f3d10e66c610. 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/BRC832300209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaabd23150a310e4c60c41c665e7fe79f253619a899f63762398c8e962dbd645. 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/BRC832300211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bdf4e082dc1c778c56e3e3adde355c90aeecd070935e078977da8a4435300a5. 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/BRC832300164.
Pauperrecido - Ao Vivo na Batuq Casa de Samba
Pauperrecido (Ao Vivo na Batuq Casa de Samba)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa4f7cc11d7bc9251cdbc79455cecf94ba6ca87cc96204489ee6f7416c4a4c1. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T14:05:35Z), 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/BRC832400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddedf27bc92b8c39428118f49849459295a9c12981fa3548952d7fa0831b212f. 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/UKXN22571525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc333589bdf97d9d813dd9543b9ada5254219e49b74c5045a99abe8d17a7fb3. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/BCHDC2100012.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch