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 0xe7125a9e543e801df79ba4be68a46ca3b9133ecec75c542accac1f8c23191de6. 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/2f5f06b0-c7f8-4462-9d9a-51c11c5c6e5b.json and https://artists.proofprofile.net/proofs/artist/2f5f06b0-c7f8-4462-9d9a-51c11c5c6e5b.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 0x8257b34c911a267962f618f96793c60887b3c5905ad7f531dd947dab65161885. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/NLN1H2100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd057895fd32a99f7693952f15626fa77ded7bbff8140e308369b364ed19cb6. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/NLN1H2100063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ac9d56d8a083551e6effe3f98d1906f8faf16e58998cb7e4524f847c27bc4d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NLN1H2100064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b172a362c3512c42db6377fbe4a93c107d81b08f85fca8f90d75ec9ff5afa5. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/NLN1H2100065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31354958059d4e4dd5c32eaeacc03f38126ef54085b3139e1c783aadaca19fa2. 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/NLN1H2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb66d3ebf0082b94853eacfa72451c4cf877ecb6241b6d38410edfe5041a3b15. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/NLN1H2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d758521214d016bb9c33aaafeba3986e7508581a68ef3550ceaecd834fae7c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/NLN1H2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3deaaaf5dbf71087979dd064032c5dfdf1a72f89f074590d6e436d034ff3492c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NLN1H2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54ddf522263b6233dfa6bb36c84f196b915e2b75bbee2e0fd7dcced3fe79885. 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/NLN1H2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c24feb9f201d6ff944126fc14dacfcd7d22b5679b56c5c9596c34eb75cf333. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/NLN1H2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84476dd74e60471eaab7e1d2c67d5a3de11bdbb416f0d305ee3c1e57e5bdc86e. 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/GX3Q92469258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14faafa55632d57abe8a739965cc4247e312f6f141ccf5480ecade909caa609f. 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/NLN1H2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84476dd74e60471eaab7e1d2c67d5a3de11bdbb416f0d305ee3c1e57e5bdc86e. 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/GX3Q92469258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4becf127f99c4a1940a215f3adfeb103085d585648bf9e5586af415f051dfe1a. 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/NLN1H2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14faafa55632d57abe8a739965cc4247e312f6f141ccf5480ecade909caa609f. 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/NLN1H2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84476dd74e60471eaab7e1d2c67d5a3de11bdbb416f0d305ee3c1e57e5bdc86e. 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/GX3Q92469258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf4d4fb9413798de02acca008a1839c0276925b976976bbe53bfc2eae3747d5. 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/US38W1229208.
Watch Out For This (Bumaye) [feat. Busy Signal, the Flexican & FS Green]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e5980dce4a756eb7714408aa9ea9d55a32f02199af57d46f96d25e6af79db6. 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/QZNWX2207453.
Watch Out For This (Bumaye) - DJ Maphorisa & DJ Raybel Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588f1eb561c435eddd058c0653c7f965343eddfca5b38effc8bf6e8be2e1fef3. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:32:00Z), 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/QMUY41900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42739b77052c4587aca44b1acd5b9431b1620bbf6f497e3d5a907467e5337041. 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/KRA252302346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1bfecd14495aff15ffe23bd56a90759fa9725bad87812bdd1271c5ed159d5d3. 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/NLDG20800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e8aabcc04e085ffa0b6673864e171d2dfaf9ac7a1c1562a6b760952d433af3. 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/NLDG20800016.