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 0x43d27f41b871b42e7a9cf7e26f4058aaf4e6b821fd05d528241476893b82f858. 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/ce9db0f4-ea59-4f15-af5b-37ba8e49215f.json and https://artists.proofprofile.net/proofs/artist/ce9db0f4-ea59-4f15-af5b-37ba8e49215f.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 0xcac3bffeae53a663b1126418718676bf780e4b8c7f75dccd32ca1f39b8594ccd. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/BXG6R1800184.
Tapa No Vento e Nas Piranhas É Tudo Dentro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2cb39e014a34c852b1b2af70615d6d9f1ad7de6c6faa6dd3cd7ffbbd948ee61. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/BXG6R1800500.
Foi Naquele Bailão do Mal Piranha Maluca
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dddd9bfef9902ee9bf600e9049a5ffa26705a65cd7a8ede55a2d35f103c35b3. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/BXG6R1900833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422ff1bf8949f9acd1fe4aa15aca5dd0e6cca0cb49e74639e4be989c17b0dbc1. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/BXG6R1900679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b41cbfa209ed3bc2efd5125d5bf6c62461119c814c1ed5d37f5003fce106a8c. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/BXG6R2001558.
Fica de Copão na Mão Sempre a Mesma Coisa
Vamo Comer Piranha Isso Que nos Interessa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463ff33595544c9c8c74641cde5567e1c1c80d93b8cf29374fde9781777c9957. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/BCIH82100829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb820afb6190fb9e0d93d47d4f89df57474981d00452ed96eb28440d590ff91e9. 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/BCIH82201662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4218b2736514f7c1eb43c82f46bf60a0a3bee55368a6e41665cedac941a5fdba. 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/QZNJX2408779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ac13e82270496b4c1581d924a26b09980b872daccede621a208b680b0a6ca2. 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/BCVK92200521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de92b5a4efca6ace64ec24b621e9ef8e2f75d5825ca009550edcf3f08a7c42d. 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/BK4442300119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587803ee19d7edf71ba38b68ba80cbf68eebbf31006bca03075945aba0a062d6. 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/CAENV2450594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4898170fda4354ec7a812b46847676a9c83dd7e9b1f38781195abb0eedab7f49. 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/US3DF2123597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454f915371cdfbefc03e0d87b0cb878b5ec2a0de5641ddb362cef48c0f6a8921. 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/QZMHN2007802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea07075e37fc70cd3d960ed417d6f0f6a71aadb75596f92d78b5c80f7c2b0c9. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/BC3PG2305946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686d2afc42712575c31bb6e2594bf0b6991bf6230b2a1cdf0ddcc2e80feaf181. 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/BCIH82100661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca9616e49195a8c3b5110aa3d7de65ea08d66b7a1649081e37c2f8d9814238e. 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/BCIH82200930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf5e4ea9ba039ac4aa562a07854493f803de83fdc9c319f329efba4db31c958. 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/BCIH82100739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea3f440d14a892d850650913f7f78a9c118e604f6137c9da886cc66fb97c49f. 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/QZEQU2046454.