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 0x6c7ae99cd9b98abd021d6d60db77f537aa747e5c6320cb87290984bc1b48eb9a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/56fa1e43-9d33-42c4-935c-e2ef6316bb03.json and https://artists.proofprofile.net/proofs/artist/56fa1e43-9d33-42c4-935c-e2ef6316bb03.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 0x7706ab17b671825a49ae39f178537a48f59330a5b9c1bbc0ddb38a4872fad9c4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BRUM70800359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd775342abe2547e66b2fd11595982eca51f7b8374191050b31c23745a9257eba. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/BRUM70800362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85e44a5849ef5a0d6852b440d7535db781edc049d15290c035f4876e69a5b65. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/BRUM70800354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ddbd8e3953620b0fc07074517844559046ed330c35e85465e9f8dc8c96dcdd. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BRUM70800363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bfbe94cad596bd46b6e3754d914e948b7e8d6354065d3eae5d8ef28847d3691. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/BRUM70800239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7641894cc3437866a334b38007659eba28375d6e9ea70b8f71eff9a59504f60. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/BRUV70800177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec8bc2cc4a21ad2e20b6e0fc84ecf3c0dd1b2130fbcf1b40fb170f1fa855809. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/BRDCK1000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaedb4cceb1d31c63425229d6eecbcba7fc7935f47912ef7c69f0089a0edf124. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/BRDCK1500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8871e15e11b4c0a22a0f4f5ee8283737341e5dfc6c2c24f7893c181d0287361f. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:53:34Z), 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/BRVN82100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde19263d0957b884de04a2e0548671cf324474718ea226b0866c2b4e20dfb03a. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/BKSCK2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c612f512550ce6a8554d191c1ac1b0d316521016340729de108a9e17f2cc0b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BKSNW2500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94417afca85bceb9822126c0bad3343e59ef4d2f38a326887ba3b943e0086dea. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/BKSCK2500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e04a3279feb2f38d73b900e20c53878e2bece95f2ce41b96f20028880b43689. Chain 2 (Bitcoin): anchored in block 957791 (2026-07-13T02:46:19Z), 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/BKSCK2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad66c202f8f8f043a73cd67b66d9dbaf6b67e24197b50d1d10cd2093929334c. 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/BRMZZ2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99fa1b6ad5e02f5be246607a531f46f40092ace0fc7ae9fca17f5a837d8b75b8. 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/BRUM70800360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ebedf48ef96ea84a0dc35730f2ee0da74e31a54eec61c03dc30902d76784c1a. 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/QZHZ32013020.
Welcome To COPACABANA - The Brazilian Melting Pop
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f68f474c74cd40439c24757054f8d3cb6229e4398f21165483836ea69b2dc5c. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/BRUM70800357.
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 0x6ad000f907fdab4c49b8f8818755dd0728606dd2f267e61fee6e20baefb34265. 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/BRN4N1000009.