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 0x877fe7dad94a2813e17326304b5627b8fa5bb9cc67247106a528621ad348ca78. 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/069b0bab-2f94-420c-97b5-74b67c888b97.json and https://artists.proofprofile.net/proofs/artist/069b0bab-2f94-420c-97b5-74b67c888b97.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pot-Pourri: a Namorada Que Voltou / Casar Não É Comigo / Meu Primeiro Amor / Cb 400
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 0x1c32aabc791741dc90f30639c9097795ab82bc5fc77415538f01092477abcbc7. 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/BRACT1601832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33af8f39788d25f865612b74505300f3c14716f85955195ca15690503aeeb7d. 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/BRACT1601836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b00666741525a54cb2d3689b3a03108d35f24f3def6738ff77f2d10c1ed5273. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BRACT1601841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788b5316b8c57a0bcf5edf90bc7f9cf92e8814acaaadb4859a5592ae29956e63. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/BRVR10500728.
Oktoberfest, Vol. 2: 20 Temas Germânicos para Cantar e Dançar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774e69ecac424eca084e5e0f948cdc33f43958c92444f88c3556b46e73197244. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QM6P41498618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab82c984d921181fbede812097d1a5204ed87a508088dc42573c498d5f06e31f. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/QM6P41498623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855a4e8d230814f992f4d0a01e87fd50e1ba1cfdbb8c053d2b19a165eed6bc08. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QM6P41498628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248e28a2a55e89050c4559240602e628bbd9b32d528bb00ef845aba056d836fd. 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/QM6P41498632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427ce2f076bfba27a9425c9e3720bf8f941738a3d3e9b9cdad8a09b7dedd3111. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/QM6P41498635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920609674d0360e17c7da0d71615ac46286600f15a56da4d1d286d7c2cfd0660. 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/QM6P41498636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc0502ac6d8d598cd84bb3bbea1624c13abd2477842de097972a41bf7fd5f2c. 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/BRACT1602332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4395728e0d623e3305aaa361d3334cb2c5c298c8ce3b2f848c7d002cb1ea5ecb. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/BRACT1602333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd8ac65c1cd1951b65654b47e977e023f0f2c77b8175eb730560dc4dd6b024d. 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/BRACT1602336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e36e75230374b0a2e1a159086b0cae37453f05eb5594a1f321bf89cc3d119ab. 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/BRACT1602338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a127ee287b8ea10f5aa8237a085856580e79f9f39f2f853a159adb5b424c820. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/BRACT1602342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86b1215ecaf5fbef4b6a66e67c7b73276648fee2e73e8c2dc264e13d5fd9dcf. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/BRACT1602344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7236ccc5ff8a67fd1f858b0572376f39f2f67175b27172530d759475e1ce4d88. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/BRACT1602909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8442e835f8592df09bc82650ca39d93512235b73a2afe7c2eef364207e754d. 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/BRACT1602910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e93e60f1c065caeded3d21ca13d6f630ddee26ef619f86ec9ce4d8a82c351e. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/BRACT1602912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da4aa2c1b7c7b4f412a1f2e3666df32f47bdd85f31a2ad56b9d3ea4948384a2. 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/BRACT1602913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371f046ae08fa2b1c994c0ad08ed40e77b84476eea83d7fd3ca2f9b94f6a0e95. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/BRACT1602914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1134186227403abfa491ba7a9ac12806aa0147c63be1126f90e4f72945bb7753. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/BRACT1602916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d64079455e2a58e7d4249f57a4473511805c7c2edded164d62ab48507a5410c. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/BRACT1602919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2030e2d5bc8692f10f9c618fcbb0a35bddbcc2b5cdc7e52c14186540e0951e23. 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/BRACT1602920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4350814702f9d831958dc09cb05f1682862252aa90e67a187a3b993cc7dbe549. 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/BRVR10700832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ec4ebfb56372646e006024b01ff06c4500570680e10e0b5321ad2945dd1630. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/BRVR10700833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14912b8d7839c259ba65eedfd8a3d7fd61efcf858d23c0a01d3ddea5dfcc03fa. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/BRVR10700836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9db7caa83f1860f0e4655a56fd8cc1347866e0464d897cb7529bcdffa240cec. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/BRVR10700841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ce0c4d78e355278b57aa1a25b6bbbf99bf79641fc44e82c5b614b393b58847. 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/BRVR10600040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eedaf760ed37c63b99b35deafc8ad7913397ec4295a0eb3a8850491e5ca75a5. 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/BRVR10600047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2697d44eeaea2dac8fd533ce65da7fedae8a39f6c833a81563d35eb29969439f. 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/BRVR10600050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d4b2df5595fe7f2da7670802c7890b8b4ac10ae360e8c1be15c95b5deeb5c5. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BRVR10600051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c802562cca219e4cd53731c97f1c97e5249886ebc9318f55a8f0d2aa347684. 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/BRVR10600052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff19f3333b385bb7a35a6cab16431a97e9c3766cfd7992b407f6a5dafd6bac1e. 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/BRVR10600053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eedaa4d92ccfe706f2e4280926bdad5316d45b4eb3a44b141bd960663fa9f7c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZTPX2454891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972a92a6d7fe4add4ee5adc40b848103a239335af660d61791f90ac165607052. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNJZ2306295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c863e005bbad300e99193d7b638045c54707c7fe64c40eec682e3cd0392faa. 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/QZ5AB2344443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4918e504d6a40e2433b8b347cdbb7548f1eb40524b8ff54265f2e05363c0a9aa. 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/QZNJV2123332.