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 0x25876bd0e1478b3cf23fc62db6934f1f35ce75b9938820d3475d7472e8fc816f. Chain 2 (Bitcoin): anchored in block 953610 (2026-06-14T07:58:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1415969a-bd7f-485d-9c8a-02888abc26bd.json and https://artists.proofprofile.net/proofs/artist/1415969a-bd7f-485d-9c8a-02888abc26bd.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 0x1a1bedf42a74c3628d43dab56db8371d253501f6d6bc2f012a42b5e892a1131e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNJV2429971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae39996128cd1c0b15b4f9e51e153c17f7df563cc614b7f48694b32c1d09d8b6. 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/QZNJV2429972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf3393c2ecd2358dd0dd5153d00ecf14ade9d7d1c2b11b5d4f1d86f868f15f9. 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/QZNJV2429973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e66be6067fe4755af65dcb709d9579e08be2ec9b555e263f0efca0b9c0ef48. 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/QZNJV2429974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c97632c3669549fda2ab636ae94a6108c3843ba182f3f06c688ff16fc25b6a. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZNJV2429975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93bc433098a464faa4df2df12a742e420412b6e684ac2f853e3d20991cf69fb3. 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/QZNJV2429976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c61401e3fd06d7f277038aeeb22bc84ea99c2384e8edc4c2d0065667befccd4. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QZNJV2429977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754407efb101b233d1f98c4e89bf0d12dbafa7ca0e29df2f2add24f5552f381c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNJV2429978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59eec43e90afe638f3d2fb30b8c2ccf767e2cce49ef3692a949a76a60b0d1f1e. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/QZNJW2437891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce91942e98b9fe224ebd6dbef693b782f28a23a30ac5d1914a430d68137dd1a. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZNJW2437890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5076122a5083eeb1e09d4fb5acee6fc9f8ff00bac175ee8a6a5aa84f76368a. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZNJW2437892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74eeac5ec1b57d3650cb8b5b2863aeeddb64b7b0515ef86e2773139f9bd44901. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/QZNJW2437893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359961fc0eaeaddb800f73b6ec3ab27806b9e257825aa61dfc6ee43d1fc2902b. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/QZNJW2437894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7cde95512544075b783b74b50c1767f89880ec03127865798e517e858097f03. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/QZNJW2437895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbabaff6991f4a8cc73384021a3516c50014ecf92c8d494359040827e65a4adee. 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/BXX5I2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44b125a742624bbcb52ece2a46f5d772b48129309837f396ca55d4cbf6fe6a7. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/BXX5I2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752a8058bf1f1088ee33cbae233823bf7af4e1259dc4c27cfa0416f7a95bd1f0. 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/BXX5I2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf043b9729ba1e042330d617b2a766365ba7a0769a6ec5ed0120fbf7bf607b2a4. 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/BX5XI2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0aa17218d10849b76350a4118d9494c71229c0cf4e1198423229ee8bed7e88. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/QZW9M2282814.
Eu Estive Aqui / Maldivas / Sobrenatural - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefccb27362cb2182931919dd7f1741d9160aa8d7249386d82af9f87b6f7f7d2c. 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/QZW9M2282815.
Amor Difícil / Alimenta Meu Sonho / O Amor Venceu - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce88761daf67002fff64b165cc7cb025e4de9fc21f75ce9a1393c30545de24b. 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/QZW9M2282816.