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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15cb94fb65d224ac22008fae39fa6f5f960646c60aaf2a7e2926dbc703945d9c. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0d3262ce-6e61-4325-ade4-be651498dff9.json and https://artists.proofprofile.net/proofs/artist/0d3262ce-6e61-4325-ade4-be651498dff9.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8094c6dc88e99383c6324380873dfd39be5ab0a73418481d25b585e65a111c. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZGLS2046540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c1c66198aff46481f75d5510b7d106bf5ba328e1f0ea2154e022c2f06775cc. 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/QZNJV2048290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ef71d354f696c4a8bf7d106cbe54328820bfcb338d2541e99093050bed9625. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BR4TF2100801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a79879694fd2504293b20c0f00da5bd0a5a665634f14e5c9a4b8e11ca473280. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/BR4TF2100790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770b5811ddfa72807b00f48e706fe6727aaa211f72f3cb87878f42354896d4df. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/BR4TF2100859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935c289c8649c518f7ab2c79a511809cd2142f182b76b16cceb77bfb62ee972f. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T14:47:31Z), 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/BR4TF2200053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23549411bdbd3b1b3a3590e9ba5e1ad62c69462f6dbfab40fefb71455681a53a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BX44O2200304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630a0ec39aaaa0ee388a3aba83efda92d28c940e4b7b32690dfff3a45e6aaceb. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:37:46Z), 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/BX44O2200858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b73f90722fa49e07291b61e6f082b87548332a3daa7b4a6f64fb2c04b33f11. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BX44O2201812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51744966dbb04c662618543401c2500185fc91789133be32f721bc84698c1b70. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:53:34Z), 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/BX44O2201938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa474671245c094808268491ecde28a3aae87744a079ac40f77e1120ee3735f2c. 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/BX44O2200530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39bdac45003af3bc9e9a92c8b4b586cd90d01483c76828c893a0c97d7353edc. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/BX4402201670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c72f5cd2d12068b4b423a075af4d04dd2f280a545e69d071315bc6aff07362. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BX44O2201796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea928f8841c15acb90f202b457ae93c0f5fbaa06c7c66d36edf3b7c9b4fd766f. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/BX4402201669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6429ea5a256661bac378aa8624e80d475f336ba83c6062ddc7a0cc3f6b468ede. 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/BX44O2302518.
Se Eu Pudesse / Eu Vou Curar / Escritor (Ao Vivo)
Se Eu Pudesse / Eu Vou Curar / Escritor - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae645f4374847ba3a25dd42f77d559d7172e0bc86afbd272c82539aa6615e5a. 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/BX44O2403012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c72f5cd2d12068b4b423a075af4d04dd2f280a545e69d071315bc6aff07362. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BX44O2201796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1d092eab340acc9ece3b7ee362ec15054acd66fda72f1760c3374b4058c427. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BR4TF2100188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381f4f388f60ed32681307a0551c1c76aa29fc48365e9775b1951fc2def9a1a3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BR4TF2300243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7042dbcbe9155e578e32b966b16d49b2f8edf5743396bbc28e896ed3558edb4. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/BX44O2403144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ee6772241c4e74017ee1a39d96eac43acae4fb19236d953a8420754c83ca7e. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/BX44O2402707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ee6772241c4e74017ee1a39d96eac43acae4fb19236d953a8420754c83ca7e. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/BX44O2402707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b549681641a6165b4d1d88a7d4648d8c4d1b1ae54b5d33c9c246123ac4109e4. 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/BX44O2202197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03590d9b33f5d25ae8b77542da441f8d1250664fe00c211949a9394d5519c61a. 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/BR4TF2100635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12c6aba8ed05c2833df8e891884e6a6be56e3f30b0cc40bfa0e69681dde4252. 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/BR4TF2100594.