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 0x56230011daf879e5e590612308ffd91204a64329ad31628d7c4a938351cdf00b. 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/2d481c6c-d882-4fbd-bc9c-2a3e4ecd97f6.json and https://artists.proofprofile.net/proofs/artist/2d481c6c-d882-4fbd-bc9c-2a3e4ecd97f6.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 0x767567e0e97cc9d9bd91406b3072969668272d0c9c9f938b15ea422aed501e9d. 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/BCBA42300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b936bc01efc3b14c4e62d968716284595ded7338048be3e1e12faf8e718fa3. 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/QZNJZ2397430.
Jhony Convida #4 - Se Quiser Falar de Amor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3af23e641a73cc26a5aa1142b716202c5f4b5acaf0b1488f27e3a64dd15402d. 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/QZW9N2249105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb277c726aa7fda9ea1fed6d26d1d4ca752f8d13be46f17d232be485d116864db. 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/QZTVM2226284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773e22f328a9ec2cc32f3b661f0ea5f4cc112391cfc63947aa3daa4afb2ba80e. 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/QZNJY2252481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96ce92e708bd8f542e19496250bf94e9221af4fa8cb9c23f3406340e8b72040. 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/BCBA32000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1082aa4e2322c2f930950ee5d0105fce8201f3b93acd23c05a5cd77b61696001. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/BCBA32000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8e1bc202f5ece42405fee8e997213879e814dc4452ec339d805ba4daf6bd64. 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/BCBA32100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468d2958fc43ab4773b60b8289d1db16175950e57ea48bc6a853b811d3fce099. 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/BCBA32100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c827644206db2d03be6a7fd1153fdd8eedbed460ac787c88c5350a7df2eb6ce. 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/BCBA32300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d7e000e1151917b644de4d6a5e02ada68d268154b11647a1e8ba2f2e0bcc30. 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/BXPG62400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2c3732be0237cdba0ffccbf280dbf13fb2a0accee18d118eb32355b24d4179. 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/BXHO32300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31df5f542601686928cc173038907aa6e4cfc121580dd8a477bd472a9146f26. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZNJV2306157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cbc17e33199a57fad108c1678bf9b88d6e096681e5f371084a0586f7164eb47. 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/BCBA32400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd541d2f91397e28f7d33271c319bf9b1447e444158d8d58b2e7e0efed9a29b2. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:09:53Z), 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/BCBA32100014.
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 0x8a469c11faf77ae465e546b2c3d836230f66eb156b7bd32e2dc07ae75e62033b. 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/BCBA32000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5a679d94105c184adf87da5db75ab75826fb959933debc5e11aede9ba46015. Chain 2 (Bitcoin): anchored in block 960161 (2026-07-29T22:51:26Z), 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/UKXN22242680.