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 0x6a76da8cb6aeee77ff38e5f0b15598788f2e825c671138e710f2b5a1a37f8d88. 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/b14ca88b-4055-4abf-b4df-e3ae1b7024fe.json and https://artists.proofprofile.net/proofs/artist/b14ca88b-4055-4abf-b4df-e3ae1b7024fe.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 0x7bc5bb0bd7a64d59850740f2b0bacbf297d2a232291926a1f56312f3d230e4f6. 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/QZEQU2148876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b0d24be74a456d7124c2ab0d465db85df4342f597606aee7828a6c8dd6371f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZEQU2148877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3db8634280569515beb0377ba239be8fad88355257cdc9501cc5cc8c61831a6. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZEQU2148878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502e3c49c96c8f31ab1eff52e3221c16ce3a6985a10fa172f04aa9cef261cc5b. 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/QZEQU2202349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9345c0fa63b4e7fede1ee556956f15d8815ba50f721ce5e7ecac68417067ef7. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:40:38Z), 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/QZEQU2202356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346440c68a281460f9a4a38e97a05a53ef4a669992900a416c242a68da3a1de4. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZEQU2202351.
Furacão Hit ao Vivo no Carnaval (Bloco Cargueiros)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aecab144c65adf25a7f1bd48ec3385866a045b55b049f3dc19a0c6d089bbe22. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/QZEQU2246214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30f3e21b21fdcd760cb7a3dd7dcc497365047c78549807a9d79428eeaa0d36b. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/ESA112305977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dbd0a903ebb4bd81e9f36f6941d9aebad604e62d919a5d74c974098066de39c. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:20:04Z), 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/QZZ662339405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2a4d4eaef38cbcf768994a1951acb21a8975ad51b3aaf9a9042fabc02f6b92. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:01:36Z), 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/QZZ662339408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045311a5b60a4372d64e1226faa5ce4001932d3056a9cac8ebcbf00b2730bf04. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZZ662339411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509aef2db7cffb5bb3c7bd722a4e6256833351f438ff11106f8c8e8f58296ad1. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/BX0MQ2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39fd5792a115dd4f2eaedb6fbd9c1d49176910ae554d9baacfcdc9b131f4290. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/BX47V2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659173123c2efb104af4b973e5d43e7c17351e728897d87f375b062ef7c0435a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZYFZ2438670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e1980cf29f6e52a6d22ce53e2fab322cd1541462319802557af234763c65a5. 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/QZYFZ2438678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82697f19c3ec404ee9c3a9f03e4c7df2613d4f216f0794f3f1f209b5cddf1d00. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZYFZ2438671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525f49cbad2b43a0ccafda9196720fe5bbd737ceabb138ef0dc798462110636a. 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/QZYFZ2438674.