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 0xdd64d1069e7c88e2cbb0bc11e3c80ec38ab6033e81e0e7207545d5184f927a22. 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/cd36872d-0021-4f35-8082-59c6f6730d0c.json and https://artists.proofprofile.net/proofs/artist/cd36872d-0021-4f35-8082-59c6f6730d0c.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 0x1a42d64b189259ecefe6253c274f3f5e5f279b2d32360f79d2d82e926e50b541. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BRSIC0600130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25fddd250633509ea0b191fa7d82717668d50c2d91b0eba54857761cec46eb98. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BRSIC0600131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901fad9e1fd1367eb92af0f5e6e8cfaf9d4803c76eb9aecd5619f5fa6bd0c468. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BRSIC0600133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1797fbf41cabe89f34c2b8687deaaa03460e8bcbcc1d76d5bd4126eed2e66e49. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/BRSIC1000115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa29c7fff4a5ab5ae845fe1cdab6f41336d03443ac7c66efe4894b0c013bef9a. 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/BRXMI1100102.
A Vida de Jesus, Vol. 1 (Iveline e as Crianças)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab55db1e9d944f1e4284f61818c0e9c6019f62d68529414f1ee9e40b20e0305. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/BRJR40500070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a994e796f6b07e0a660830a0ccb4f011ccbb7a479f865de519ec549273c85c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BRJR40500071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41a818ecb42ec6d608cd9390bc7402943caae57fd80d3cd03ff74bfa87e87b1. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BRJR40500075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734ed88dd5d84698223210da675b75a16a86762d48dd772811aa121342249063. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/BRIVX0800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2c7fed012d7fd87abcf3b4798334bbbeb95c4a69db12919054591902577db0. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/BRIVX0800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c57bdecb6fec21e01a212a5d0d7b93927e15dcada6e0da559923acca7278ccf. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/BRIVX0800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8448b300f2ebdd29d342abd4d829e21d9d14fdb983c65c056f5e1022eadf4445. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/BRIVX0800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf26713517e881bd7c5285fbc95853c12b53cbe8357dbd6acd2277f28e347c24. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/BRIVX0800018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68df5736818d84cd7bb329db22dc5a1d2514d4521e1d432c8bf806ca0ffbf7de. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BRIVX0800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014d9f737d79a2daf90105f9ce6ee569556cbb17d275db637579df03d37cc4db. 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/BRJR40400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03896ee2b66a43ab87f55c56bbcfa90db452ff63de8209c9f73bf0b56d8e03a. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/BRJR40400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc70acb0cc9d92272110f6facd70b416337ea527bb9c4b82ce44c590eaf19b95. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BRJR40400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2d70e917774b78b5345c87278bbfcb0574a6e6cc6570ddcd8dab078fc2cc3b. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/BRJR40400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d05e39b7523ce7b39bf93f04005dc560ed0378f0a8f16e65af20166a616a7e. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T11:57:43Z), 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/BRJR40400045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6341a3a832aa018b351bb85a03f52a217d451b9bc23194629005694afb02358f. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/BRB8G1200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa011e12e77a30697932b77835c0ecde48d8018cde9471f9e26d4ef5684e18e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/BRB8G1200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa17c029a10a22cde0350497795bd8cb7bebba8d761b4604c01577394f49603. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/BRB8G1200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6b83798a4f62a7eb174959e4de41a7de00544c6d06a2817f5be1e42a9df3a3. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/BRB8G1200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b86914b950de3779c3530c5da837c97e1f2d2caa8b79573f456924da96c000. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), 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/BRB8G1200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044b2258cd5e6dfbf5cc4de250c2c1650ba912a789f3094aa6d20acd9b1af477. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/FR59R2265069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7d9800469a758dd1f0d4ccc9c451c0494aeaaeceed610ea0bc61b98ff7bf1d. 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/PEZM91902580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ac04dee8f5b0b0532f78781a5cc29bb70edcf195f3ef9b00ef5be2249490df. 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/PEZM91902569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1b1a1b77906c6861332c863cfedd7d6aba9810d02cf417b64008ba8a020d19. 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/PEZM91902561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb173b55f26babcbcf3d1eee117f0c3600fd42ece5830bc0b1701a813963bb30a. 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/PEZM91902571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe144de7fc212b6a8a72c9b8683fcb3978c98d73802d67a744c985d0cd7a5b8c8. 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/PEZM91902579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051b3b0b98112953d2de48555d269ab4eb9eae6c9b191b85226e15c2f0942275. 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/PEZM91902574.