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 0xbfaa7a0261f2900c4f1621c74de515870d52aea8b7763b51780dee0b35da791a. 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/b569f05e-a1c2-4380-ad36-5b9f45902516.json and https://artists.proofprofile.net/proofs/artist/b569f05e-a1c2-4380-ad36-5b9f45902516.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 0xa004c1fb9ef1e29572cb888abb1f450197c6facaa499d38ee36b5a770721c29e. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/TCAFH2019739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ee1cbe779c9159e5058c5598ff92a9a7934fb178b7d1a233aec5b8f1c30bb9. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/NLY9D2100061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d22df98e22cad87432afb0fe7d5541ecf03cea89f252a3ce8ea207f0e4c183d. 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/NLY9D2200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d435038ad4a118b18909913d64548543003294dc63f088502f0cd13d52a7321. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/NLY9D2200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7be8b0247b041d904451cbc9381b4f4e5f7d5a005fa7dcaaccbbf09cd22cf2d. 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/NLY9D2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce55dadd8080bf365b782cd09ed537cc8b397ec1a493d77e0c1bed9d53cdf8c. 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/NLY9D2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4870bc98926c2adeb22d927114389f621dc75d86e4f97f83817d029cc1ff24c4. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/NLY9D2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1654787c0beed09817cd5382ebc02c2da4761ec930f6a14702c9a08373bd88b8. 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/NLY9D2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3524473a98fd8768552661edc1dddf79f71dab6abcbe1dd660db7d18a8e90c56. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/NLY9D2200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d22df98e22cad87432afb0fe7d5541ecf03cea89f252a3ce8ea207f0e4c183d. 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/NLY9D2200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf27beba6bbebfe0a26c21764ef6cc8a8146083bc2eaa627091d46234418874. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/NLY9D2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4870bc98926c2adeb22d927114389f621dc75d86e4f97f83817d029cc1ff24c4. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/NLY9D2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ee1cbe779c9159e5058c5598ff92a9a7934fb178b7d1a233aec5b8f1c30bb9. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/NLY9D2100061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6175a388c9e8273b676d14c05b39fdd6b3b5a8e9f5fed34098ccd931ac0f43. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USA2P2425912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15bb402130ee1615c1b5504df4d7751dea91f78fb97220c50434043c910d5dd9. 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/NLK2U2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8fa3fbc7c7ca4cc7d257043a392408d7ce5beda8fa82e72cb18c6af35c9cb6. 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/NLG662300153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2703a370267286bb338e6f87aed878c98945a41e7539a6f13dd7582595310c23. 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/NL2BN2300056.
Love Colours (feat. Jmani) - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643dba26b7215209fb9b286691f6a8ca8d28a809b32b14c3565e0c324feb4b4e. 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/NL2BN2300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7a25db2ab54294572ff8eba1185bf308ab16a49e12474411ec04121d5ef8bf. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NL5MF2101865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f27dfcf1642bedfd1fbb0e141abbc4512043044e0d27634bec21d7f42bbb99d. 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/QZMEQ2362258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f27dfcf1642bedfd1fbb0e141abbc4512043044e0d27634bec21d7f42bbb99d. 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/QZMEQ2362258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c9f476a4d3d1b633962ed20c56c999cbdeb2fbe676f81b0f81dcefed9cf84c. 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/NL5HJ2400218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea097a4a9f1ce5e9e4b6ff1099860fb5656c9ec47e705a396d09f409f9d8e8d. 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/NL5HJ2400173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220447d08aa03af6d3b1cc0fec16339f34fb99bb0a5f142500c96c6a7fe7938f. 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/QMFME2372303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea097a4a9f1ce5e9e4b6ff1099860fb5656c9ec47e705a396d09f409f9d8e8d. 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/NL5HJ2400173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb583b89e80d7f5cc9df9ea4a86ba62bd92cf2368c9816d96516b9c6f4a7059a1. 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/QM6MZ2353796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653229cda101df370db37aa03004932be89e79bcc294a41b311387a915965ff4. 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/QZNWQ2254878.