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 0xf5bfd371c3d200aff1eff2857bd94087ac7f4489b94026b59975be269c21507a. 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/15fb36e4-1d24-4d05-b2fb-1ead2bbd776c.json and https://artists.proofprofile.net/proofs/artist/15fb36e4-1d24-4d05-b2fb-1ead2bbd776c.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 0xc1410420276efe56855b7d71d5249fad27cd7265f25ff2bf5e970699aeee3294. 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/QZ9452300832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5cf3a74cd4d243096f6ddcbd9fd2925b4dd37728e554ba6617f2e54ee429735. 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/GBMA22337086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f9497d696da92c578cf0a837848c046e75f4c1b4343361cb003e6a55cc7cca. 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/GBLFP2426241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1410420276efe56855b7d71d5249fad27cd7265f25ff2bf5e970699aeee3294. 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/QZ9452300832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e9f62f01e8a72c20fab032bf3503d825d408730d1b03e9508132a6902f7e89. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/GX3Q92416432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678ad7e314a5313a25ddca1535927b43e51e03df6065cd3a9c8574a1ba23801a. 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/GBLFP2469093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4704bb7050df5df48a6a38dbcc0d9a84d7e3c8926a55547cae867a09b4ca063. 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/GX3Q92416433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a105e8567cdde1563bd553d4308d63df076c59634ae81b796f739f3b117c07b. 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/GX3Q92416434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57d929422cdf1abece07bd9f79bdc12f667535b5ed3d4bd7d9ee0de2490bd6d. 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/GX3Q92416435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5294f4523daf06771a9bb19dff42b96f5949355a132bf8df27a40457709b2e. 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/GX3Q92416436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94ebb46555ff4b71aca0e20307188168471a9eadc750e8174e209de20d39c3f. 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/GX3Q92416437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5493b7bfc0e67a34e7bb1d8cf715580922a69cefa43d45a5d84c93b25c47caa4. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/GX3Q92416438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522c19052959123b4dbdec85d35800e0b89de6fa8600b4616970ea6a97fe5c58. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/GX3Q92416439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6835e8d083d1d60760da7e522ad9c8645b808da9763c31e725c8d12ee94f44. 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/GX3Q92499961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52c22cb37fd86b883566ec6f5ddf8940b4623e08d0658ad015857e4f3f8417b. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/GXHND2577426.
Crazy Rich Asians (CRA 2.0) [feat. Dok2, Eric Reprid, Paul Blanco, and Parlay Pass]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bcdbc92f554c6e9e5faa658f1850f09888f774665f49b42c0d9757874f042a9. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/ZZOPM2230759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06fd1b5b60471f8fda38caa20f45cc76d7372393a8b6d008653c92069254073. 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/JPPO02001421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d36a6fb381b23e7a9033f2d0317a1c52f18820908452a4c059c510c415956b. 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/QM4TW2323938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cae5959d78cf28c84240171514fbcb50f2aad0d82330394c40f17408fba36c0. 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/TCJPB2414693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdae83653e32d54b7aa67b848553a2b34e81949b39fda3e5a44263c0c72564e2. 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/TCJPV2348494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f5c2591a98ae574a0799d695be94b5976966f0196776781c02da2b5bc5d428. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/TCJPV2348522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec318e211d80c5564367b75a7d6ee2c4f4f007a25dbb3bd352497e4296380b4. 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/TCJPV2348526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e77c053ffbff96d2c8508b690aa00b9c69d15730bd8618d7ea6307f2d37edf. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/TCJPV2348534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1db7a288781a87fef89da40d8e7289a28b52dc0e26cb4369d6f3880602fc16c. 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/TCJPV2348537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205e962235fd39c7a68294972aaae5f9b8ef55771e7a731cf47f2d85c87b8ca6. 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/TCJPV2348541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e4cd2ecb07f99d5901a29dfc3c1e1c17739e14c4fe676d1d4080178783fc6d. 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/TCJPV2348545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef385e78281364b006ac48fbd18ef1beecf11525caaf17a3be7b30c5b0d90e7. 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/TCJPV2348549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d30ef72d8ef5244b9c50acbe686d7cbd0537dcb9ba158d6e06345ef0eca14e. 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/TCJPV2348552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb031d59a78c12200cd596f4ed7462ceb86a0115307c2374558847f29820717. 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/JPC102400273.