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 0x904d388ba25fb4478171346a5b6c4d8d7bedd333512060d17930b8ffe617f98b. 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/e4c1e10d-ce03-47d3-8c8f-66c5417a3e08.json and https://artists.proofprofile.net/proofs/artist/e4c1e10d-ce03-47d3-8c8f-66c5417a3e08.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 0x2fa4a6697162e4c0d834808a5c9c387501184ee4651498de8d3bfb9d4a88da8b. 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/BXIV82314407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe8b67cf8e2c45084579fb4c4d3ddbaf7521010fefe8ee620facb389bd9e37f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BC6M22424394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555ae40356d293af7b0d63d8e023781c52d6e3d8b997264552ae54df68c56da8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BC6M22424392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0ef7bf5c470273faf0611440c4e8eae13324e2a4e6a4665d3a24ba670c331e. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/BC6M22424393.
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 0x813b2a07d59b482ec55dd15d5641c88868dfefda0e6d2d6414fe4ecd8f78e2e5. 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/BC6M22424391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9a6f95d8daba8ae66c0bf1d6b26e52a96f31348cab49b9d1e5ef7a5d72816d. 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/BXIV82370757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb6f90c76d4235b6c2ef5a50655ef4cdab91566cba6732aa8e10c6051b519ac. 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/GXBDS2334397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79112796d0bd67a6975db074b029f5c93fa3843e592d9a0901ee8893fdd897d. 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/BXIV82327069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52eb86eb92eee40cf9510975790e338d0336c7ea7533d2c8626e299b94bdee41. 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/BXIV82339710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5629be6cbf123ebb2004fc236f3f599a39064c610d47674aae9683ec7fbae7. 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/BXIV82300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3db135029412b197b1dc4a6bd0958c59ab0b82e112b14318610b52c03765fa. 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/BXIV82368114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee30d5a7a0a4c80f8eee5a31518d079e4f0f26bb80a9f33418847e44ef1aa2f1. 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/QZNJW2321998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4ba77e9f018696c88ed1602c16f6cb032d97dfe9a07ff8047c3c0a795cb068. 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/GX53U2476047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1906bd8525014334a5e0c09c07ac5369183a9addcba7198c4422de67e7df9b. 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/GXF9Q2493324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031bd3fdb7e3edc193e816e88731d945554f0cd8fa38eb5c41cf67c1921693e2. 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/GXF9Q2493325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc429548215d170af9a1ebd9250ba5b2a79abdb14eea60f585c1c94ef96842b0c. 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/GXF9Q2493328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b24e848f0693acb9fb112c26f9e1da55ad6fb765ef8a54234f3390398293e7. 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/GXF9Q2493327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd380c904e4c1cef71685e1730fe0e8cbf15f4c6f55bbea9139f86b2caeb5c112. 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/GXF9Q2493326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28733f02b793feece13251536d492a7755e196b9b1e91d3da3ae476edf7b734e. 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/GXF9Q2493329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48eaeb2ea9b7f0e9d36303ddc96ee1a468df2274213171343ce0e323fe3c5b71. 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/BXIV82397989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8c639847f6d05f8389fe84ab3b84b156b2fc41d5b3e2223c7a4644b1e5e172. 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/BXIV82478817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0001513e7bc624ecd425ef4fccd68504ded64533f8e418fa36a8f61785c5e415. 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/GBMA22387737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50056e47f9b827020cac6662ef3a18f0c02228895dbf6117c8c674b9e784cf1d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBMA22387743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e2b5645cd325c1ae7caba8269129870312687fbb06a05576a64c4989fc8922. 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/GBMA22387742.
herança (ou ''a importância que nós damos pras coisas talvez não deve ser tão grande assim'')
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53016708ffcd5a9942da2279bc41b5e7d3c1c4247372000583477c0aa034f6ea. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZTAZ2451256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b8a98f4aba8e0700dc2e0a27e80c2ee439936be427e0bbcdaee17860be171f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZTAZ2451264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21892aa3151adbf8a400a34db1990822f3380bdd3d7a219037773d46de23b9b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZTAZ2451267.