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 0x9c1e4c0d885314c5d81f95419082d6bbe972d475ffaf1a3c492b4be840a5e953. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/109ab8dc-78a1-4c2f-9fe0-4ad095de040d.json and https://artists.proofprofile.net/proofs/artist/109ab8dc-78a1-4c2f-9fe0-4ad095de040d.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 0x064f58e582b8d8db68d54561143cf63dd6742b5b392a64f27ac745703af1bb51. 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/BK3112400449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb2be671454a300577c4a6b4a350917fe1f8f6c4b2d361868e78539f2c6d269. 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/BR2DX2300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd7c90d90cb4e4aafaa475abe0407b5d37c09524c6529bff1afa4cb0fbaeb63. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BR2DX2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f80ecdc55127bd70955a7f894d1a77d16c2dcd5c520b997740e19975ffd1d05. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BR2DX2200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521c52a60dc6df2e3e5b802358db66b4508d5182068cee64fd3278703f06112e. 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/BR2DX2200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e87198ba19d98469599eef727f720d4ccd490d37d22bc0a761312e5fa1df5be. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BXLNL2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8a64f5960ccb41f4433e3d7522fe98857deb00f8efd040a6b0181f31fae6af. 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/BXLNL2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602d8310dfd295fffd2bcc8cde4807489fbc0a2fc366fecbb17206a1b8e932c8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BR2DX2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9e66672a0bb6048bb86604e24e8a936ce1071bbaf0522e9a3f4c195119fe2e. 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/BR2DX2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18207552ec9d20d01077372dc5a253d55a4ce1b75b160004d16a0e8d3049496. 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/BR2DX2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7021ef639e1d01074adce72b0c0f972140f565241da53028801f4400659f9461. 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/BR2DX2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1751834b74e9ffb38f3b63fa851675fa3d62046623daac40b2d7a006022fafd8. 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/BR2DX2200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa320bf832351ad2414a3aa3e21cf4186915fb4aa97719543f8c7957afe01340. 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/BR2DX2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b652a5d9e873d8ad7c298a6e1ca664bafb459efa0912c07c3d10ad84c49381. 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/QZGLM2580737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601fe91a32619914d19031a444a388db474b95526b94fda029992fc3050a1e43. 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/BKTRR2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e28813e2014f74ade63c38127ed09ebd8dc0c8bd49d9866666c19d1c30b6372. 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/BXS322400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1788e27dfca2f49e598f7c3f0309d6dad508b71fe7eb71df76131d1c7301dc88. 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/BR2DX2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046612839118ec00c3ef4f0757af6aada82a319f2480a2c8ea3df6ef0311f2fd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRKO12400747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86dca29df0a5574b6593b6ad70b4521ebeeb3e49df63f80aa1a69b4487a7a3a8. 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/BCY5V2200045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e87198ba19d98469599eef727f720d4ccd490d37d22bc0a761312e5fa1df5be. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/BXLNL2300004.
Hoje Nós Vai Tacar (feat. É O CAVERINHA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215881deaa4f33773f5b00e0a83ebf86e4e22a504fbcf6c57aa8bf568ece94a1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BX7272400127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb959b4ac498684cbd299be8e9d247907eb8b8b0dd96e8399e75941630f87a5. 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/BXLNL2400001.