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 0x52aa01687bb1c4c84be051c934d90058549d01ae19029b685555c75c285b490e. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a7f3cf09-e0d7-4c86-9c0f-e0a638d0a4f7.json and https://artists.proofprofile.net/proofs/artist/a7f3cf09-e0d7-4c86-9c0f-e0a638d0a4f7.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 0x017d475eebdf1cc36e194026cd792d3790e5d4fa773eb42b5d782b5be044b0f5. 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/BRM7K1300522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65674aa7dcf92a07c524a513fd7a40746292991086fbb8d658481b3f82c43615. 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/BRM7K1300525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23ca29a813666b379be63f30367ff5494beae29b6b36810a81b7a85e624e66e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BRM7K1300529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59fc39ce5736d38fee7de5c43d70128b6f27797032b4a8cc3ee8144fc4cc0a8. 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/BRM7K1300531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd55238b92eed9aaf7dee485c4df9db372568dae7f854965008108dc2a52f8b. 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/BRM7K1300532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19914fd93f6bd2d56bf17094566ce83f001cf0e4487fbe259bd260a450cceac. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/BRM7K1300536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c06b4d99cdce8a7fa5e26d91f788726a4c32736c5e84aee9a269d464180ce90. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRM7K1300537.
Boate Azul / Louca Paixão / Dona de Casa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea44d1accc2ddd66ebd0ea71cb3a08ab2dc95dda2f5175c17e9382cb194fb9bf. 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/BRM7K1300539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c49760051005cbf2e9deea685a1964bd49aed84df376fcfb08752ecd8a6286. 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/BRM7K1300540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ab0cf66531ed3da903a1b7a8fcc28f18c1ab9d538bc257233444ce35f84237. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BRM7K1300524.
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 0x27fb3b8fc5a403f4ad0eee44c6bc2d6f0161267a517f511e3c2690be7bcf7fe0. 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/BRM7K1300526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9615d9df5a0b3cfdd76ae2947610855a803fa9d23ed60e09b29833b28b2f9eb. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/BRM7K1300527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a1983fb445b8573753b82cf419996eae6f1c27e325017ecd212d5f51b3a616. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/BRM7K1300528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac07990ba3e69e55c3b0d27915cbbc11f1d2040c67f961d1f6f1bfdb6f48b660. 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/BRM7K1300530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f911daf4f491a3eae0c8bec217ed196592709bf4c4b570b455fd1cc2d20d6c. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/BRM7K1300533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd62b084f18491ba036530aaf0bc2064c225c7b31f334ac86df5d9dcbe683ba. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/BRM7K1300534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6565f1f82bb83950457299dab63c81c729cdf4fafd562782205ad697f960a19. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/BRM7K1300538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bab9b5a21d2a74f429cfc519baf4b6b92f55fb8c51767d4ddadbd89ddb149f6. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/BRM7K1300541.