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 0x7ebb2ec6cae526a8f3d97dd28f00c11dddca596621e0e70d67fee8edc1bd3728. 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/1157dd3e-5e7a-44eb-bca7-4fc5ed249d70.json and https://artists.proofprofile.net/proofs/artist/1157dd3e-5e7a-44eb-bca7-4fc5ed249d70.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 0x48f00625bfa7f3ce76ed3a84ff88049db0b9eaf503fb9d9845efb7d66ff12d95. 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/US7VG1771186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcde93e81fdcbc3b30b6dcdc68881eaf38cb1fc8232a44286cb68cf7ddcaff01. 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/US7VG1771187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9d76e0114405732e4eb9724c3889f6362da81dd76f3ac4f4c30c0dfb5a76e1. 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/US7VG1771188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a47c28b207601fba351eb55871c756406471f7a816d8107a52ecf49a56291e. 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/US7VG1771189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d9963fcf87b533555479470f0078b799e99f7f65d608c6d6ff5db14e74b2c0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US7VG1771190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909374d089f1e83d934f7142ecbb433bb8f5ab54d7ff35d8dbdd8ea2ae4086d8. 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/US7VG1771192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73eb419e7c06656a8464f6def52751a6f23e5e332052fdbf169e60422479113f. 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/US7VG1771194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd1dce9243d3c31ecba07dccfe1e3fd584fa306892db37de124a0af74ce4f58. 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/US7VG1771195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986c19f2199755fcbedfe1cf0661caea96cc88d4cc9b10337f5e271b5c846aa8. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/US7VG1771196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1725eb67ee6c23c974bad115c4b707b8e777c5b2df0ccef27fb0eb285b9cb31e. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:19:34Z), 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/US7VG1771198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846b6adead155b7a4c89c8c5e24b7e5daddc6b8b5aa6ae9ad63fb9ae18824530. 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/US7VG1771200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52af994ab8d19721899f277122807d94cfcf305b798c3191a4fbd2b4bdf5568b. 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/BXA6P1700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee44ae6133dec179537a9607d8c31f7ad3c12bf18aed7afc470c7c574023090. 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/BXA6P1700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9688f73a861c6efb3ee71fc09e2368439bf54327805b6df7be3785d3879a979. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/BXA6P1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499cc709a7fea779ca88013f9c63f6a02d71169d169fd8065b3c0d0dbca7f3f9. 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/QZNJV2513231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092d8ff9bf192c72e455da710459ddad3ae0479134e0247b4631fe144c62bf28. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/QZNJV2517938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f6397b804b78892870c1c54182aa3294177d537953b663c1b3b1645c4294df. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZGLS2573559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee48218f429f35a9051b3f4f22ffb73e5f227855c8bccd2167daef8a51d325c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZNJV2517944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b020493c25db32c5a3527b9e00fd77307027fbb4d1867a21d994f472124f83e. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/US7VG2569578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41875d12bd6c8d1ff11426987a6f192424d6d97e4d4a35f09d82150782eea1a5. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BXA6P2200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4bd61929e6d7ad47bfff5daa8a3f0a4406116a26cd97c9b89b1be5c678aaf1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BRUM71401517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62687b62c01021ed1fd0b4464385b916323f6727cc633a043097144a30884f30. 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/BRM7D0900005.
Por mim e por Você (feat. Thaíde) - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x250f9891d0fd52090cee7493332b7c644f6d571082657d2136868a6e4c143d2e. 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/BRSME0300221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903cffa828f1b1ee571ebded1df7d3d23de3d062ce43ba855d2759381a6bcbba. 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/BRAP60600021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f1b907e610da6229502c6864fddeaed6513bbe372353e8fb7a12976785842d. 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/BRAP69800012.