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 0xed73c5c2734770e0f0a44397bf4de4382ec97d2e8d2a07f6740f0af24afb1080. 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/fae51d74-d8d4-4371-8df5-d1fdeea8e70f.json and https://artists.proofprofile.net/proofs/artist/fae51d74-d8d4-4371-8df5-d1fdeea8e70f.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 0x5ace3f7839c4ea71f217637bc612bf4ef1201fed2825f347fdbc7262f0e08c0f. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZHZ62079266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5424460577ddb1c1cee694c22b9b0b5cbe393b0e6d3a75f5445afc1388881148. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZHZ62079267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74b21a2dbb816586f5096ad380908fc9a7e1027c3dfb465de5cb30916058c39. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZHZ62079269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dbca66e6c585340354d09b82c777a73c6ccb8b9dae708d8c5ec48cb3577f90c. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QZHZ62079270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1058dfcfdc7ca6688e5fe6ad79f2f84c147c171452886d281809c7a2e2dffa7d. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QZHZ62079273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5cf840193bd1ab7a7a84e398aa222d32a3c9ddce953d5308d147e63b8ab7a2. 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/QZHZ62079274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726a5b3077749758243e7774f626b4a1d26e3160f3fae11e6f4d31c6a658be4d. 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/QZHZ62079277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab229c4607359f84784c8007ef081fed828e0800702da3959c9a72325d7693ae. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHZ62079280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661b3e6ec4c94cf2f3c12fa793d0ee70f80cb5973bfacbd03c770fe224e5f628. 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/BR84Y2100059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72443c659fb1a7f62aab10c9893eaa59bc63016e7a8feeec8d23996db777143f. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/BR84Y2100056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5811c02540d4044a996d4bc1d3df793d61cfa31a96778ce0c18962b914d76062. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BR84Y2100055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54fe7a38555563e809917a8e5b813acef6ae2ceabccf304565f454e510ff45e4. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/BR84Y2100057.
De Nada Vai Adiantar / Romances / Te Amar Faz Bem - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d4390766cd0df74194fadb261b058e5862dadd48dff0492bd0ca8357c5e0d2. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/BCSUV2302544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52291468c44f5aba096a2c2ddbff9979c14dfa817a50c06336b3d306f197eaef. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/BCSUV2302546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdad0583febfd620a594cb8b04f5470994742f09b878b3ed9680e7d9c36ecf0e. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/BXFXG2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8734c6f150fa45864c65b59627b028fd4bf27d15a5b6946ac53920ce487680. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/BKFXG2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f3d45be6c2b8646232219f3f117db785836e790b723a1de70bafa68d39fac1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BKFXG2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62a9e746da6f1b7f3574ec03cf152d910fbdafdcf1f24b3f55ddf4d4b894e9b. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/BXFXG2500004.