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 0x6824c23c94e15a2e62172c57c7146354d5e8ff92007d98e99e3030b18b6135aa. 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/f8ab1647-2500-4849-8c7d-aa9ddd3277d9.json and https://artists.proofprofile.net/proofs/artist/f8ab1647-2500-4849-8c7d-aa9ddd3277d9.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 0xbacd007e42a27640100ec1c4f514f8179770bbffaec1cee5aeab314c0ae4d08a. 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/BK3ON2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff076c57161a87f93079425d9eb655d00e573cd21415cafad48db5f5456e7795. 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/BXKG22302803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb4bd58e092e9725754eb6ab8df6b39b4f09b6cf81d667eb41cfb2ee8eec4c4. 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/BX7P32300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c55d6988bd9343aaae2a2bc831594f259cb0d47a6edcf0ef5e0913c25725c52. 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/BXY7T2400002.
Naveira Sem Placa (feat. MC Cebezinho, Menor Richard, MC Ryan SP, Mc Kadu, MC Marks & MC GP)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd462c82154a0efe64e193c338d51a2e4e3ab7a43b874555dceef0074218a09. 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/BK4DA2462559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23b3b0870b01df000df8ff43ae90c5ce67903410c4f90f39f20c2d188ae863c. 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/BCRE22400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0965005e1f2503e69de277a12a5d92b5713adcdc856f63e1103fb166e448d792. 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/BCRE22400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74b2ea6dab6e095ddb7192509393a7d07f7b40ace5040604b75648534a0e472. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZW9M2456144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbdfd13d54ecf5ef4494b5222400f574cf868b6cc836699c53c21f333b631f9. 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/BXY7T2400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c72036ce73e773ee5f0a26ec83e6c27c287aaa2d19e1666f979d442ef0be076. 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/BCRE22400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef81dc2010787329debb2b155803d1921a8d4e02017cec39dadd02f3e52358a. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/BXY7T2400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2fbc5edfd85b0c5bb45e4973470a7c1e707f6b371217ff974c5a3fcc4dcf29. 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/BXY7T2400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377aa1625df4d47e5aacdebf061635bc4a58982acb560f3df914af5d8efa5427. 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/BXY7T2400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454e287d97c1b5ced60ea6db55a533357e280c8a5ffc30729bd496618d39f0f6. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T18:58:42Z), 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/BXY7T2400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe310cc1b442010491c81b3c23681767e374a6860600b358aff5d6d98ad2af42e. 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/AUGBT2494389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd5252d10eabf4dfc12b7c9307627a3d3e41b176b0a76bc712250ee3e344681. 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/BRWMB2500349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60fdbc3a8d5cc2ade10342cb60dd8f00dc10c1a7c3d88de37c0214304eb23da8. 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/BRWMB2500184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1adac88077684b57adb6e7e2e67e8794290cdde906c3dccc387e90a21740a00. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/BXY7T2400008.
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 0x7821086981d64acb9fb45ad2bdee124abb0fff20d5fcf2f79d7f62996a2c48af. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/BK57H2500199.