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 0x0802e9f444cac64654749946ea80361f5399bd88cbd2a2e71a5be6d7b3a9e9cd. 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/5246ba1e-7368-47c6-ade3-ed263a66d478.json and https://artists.proofprofile.net/proofs/artist/5246ba1e-7368-47c6-ade3-ed263a66d478.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 0xa7dd1f43c55cd16c7afc19972461dddb59ad9b33fd6416da247faf82b1652a5e. 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/BRMVP0302146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6417b0e8b95025b624328c34e0458878d3a9f2b679826443450dfb40092114. 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/BRMVP0100188.
Rio Bossa Nova III - Toquinho - Paulinho Nogueira - Armandinho - Entre Outros - Original Artists
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb71909c1566edfb862f0f7b502f296c674975a6a526578518b2c9231c7b245c. 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/BRMVP0300387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e613f5a1a08b3265a10ff91e8eae98abf3c75db050e7a0aabd7526486eddf70. 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/BRMVP0500939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd878b125c1dd18472e3958c759e9c12f7f9578ed13e9a51033e1a5b58de5c5ed. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/BRMVP0500940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45497defe8458d5c095b812898aa331833cad0f2695aaacd15281bfb12d8d841. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/BRMVP0300380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86fae08b9a70a4a806a66a6b22ce5c450ae80ea37c4dfe4f3bedd8d40ef74b0b. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BRMVP0500941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a07e7ac0415423a15ef785041fd6b8891378df24e8bb3261dedec64989a021. 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/BRMVP0500943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe574f09294eb75c044e5290201bae5d609e93807ed52ddd7334b65738e42b8e2. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/BRMVP0500944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee904b4d0b3d5e555e81aff0cfde4283c66c86500895d06bac1aa00422dac753. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/BRMVP0300381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b71c4cbb406a069337607c4f2a92f424bce8e2f0606007503c03de68046200. 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/BRMVP0500945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8677d39cb7de136270b1c9047a48cdb589f26ff90dbbc7c6b9fde75181a9c529. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/BRMVP0500947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf636d683a9f9fde1d2413c4aef409e28a7d2fae66a63272fe5291f2e92ab834. 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/BRMVP0500948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9bd245a5d330d90650699163528812e48d8b51cbdad34fbea4101a627841c1b. 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/BRMVP0500949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a912337b16f27074279146fee3e7cb695fbbc14bdb8df558e284a743a7e34f7. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/BRMVP0300389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3beaae5f162f8c416358f652583d3087a3498c8efc4e86aa8579a2cc5d4715. 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/BRMVP0500950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb1725293633714ed7e0aa8998483dd7518678c1e73d271285fe518882ed884. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/BRMVP0500951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5684743b70bfe00d0d765ff428747ef28fadede33d18a3e2f1bf108e4c45ba2. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/BRMVP0500952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59fcb8d4245d070ecc7c56075a5dbce9f3e10ae25c50d88167d701e35e3d1797. 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/BRMVP0300379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd369520168d0bd1d00db2197767c428198c06c1be63e9074dd94bf19720bc555. 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/BRMVP0300384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5d1154594a3354a57eafe96aa0c8229b38a50e4f73194e5ba581a3b195e27f. 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/BRMVP0500932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07cc13c1864a0a0fbd622b36b00d45a1885b90e8310a21f6b3be0c3e1c09f91. 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/BRMVP0304106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f12b370a05a863234c6209d1a260faf7f76da2d2ed47fc4d124b0163549b96. 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/BRMVP0300390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde810f60346952080896b997a877e97add67e0e24abff571c4a50a11285e1b60. 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/BRMVP0300385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634ebff68c44cf90be28dcf87b859d64c145d2f181bd544c1fb0f97be02cbc80. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BRMVP0500933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1321459746addfa0bceeaced2ac2901720d3c6e17c85eb52985b66070e112729. 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/BRMVP0300392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a20d14d1f9c020381d59b64b40d43b77388bb89de20a94fc582ecdf8f7261e2. 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/BRMVP0300391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a91fc092a27e7ebfc3f6565aadc4539ab7e2fee1e20d1b05dfd01a14e0b8564. 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/BRMVP0500934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e21822dfc51de9e07ec723597e140fcc8ff30569a679aaa097945396b79360a. 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/BRMVP0500935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ce658d49284eeea4451dae73fb76f09145c5beea22810556c7780b8f0c4d9f. 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/BRMVP0500936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6422f358a5f070ae94764765efb7d29cc93f4d8f566d5e67400f2dc932726b. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/BRMVP0500937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab0f3f91af5134daa3140c66dcdba2ab94408df70f5685fe22658a429c2ed8a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BRMVP0300376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb941fe9e8ae8d8b89fe1fc6b84010260df2ecdc78d932e112d3e0e9b42a700. 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/NLRD52200250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb880e815d6729b37c5b9e5a9c8fae9bdc7636508e9731591227981daae04c596. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/BRMVP0300374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5986fcf3f35022672342b06c8e5c6b526c7edf593e945d697379872d4e2e5f6c. 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/BRMVP0300393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55ebdb1a18e5ecc7f4a45b50879a3b07676da32d5b64ad91a0b128e2877c62b. 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/BRMVP0500938.