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 0xa331134dfff2b4be7f4db0bd089996e8cf8bc42472cee9fb7ebcad4150363f73. 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/722d633a-b0e8-4df4-80b6-2729aeb892e8.json and https://artists.proofprofile.net/proofs/artist/722d633a-b0e8-4df4-80b6-2729aeb892e8.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 0xf677854a9063e89179cecfd8597d0951b66b04471a48738cf32fae3fd56f93ae. 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/QZDA81884057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54438a1751a2eba1a857a6501deff38dcbb3e71880478441c01dc3b3e94cf081. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZDA81884058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e6669d6295bd0b9f333a1f50d6e4a1c5a1d8e98d1259af4e5c9eb2908287b9. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZDA81884059.
Coming Down (Live @ Studio Imienia Agnieszki Osieckiej)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87198ac66e6b39408e2843079c32e16f78d6033ee0a77202068ce5eadfd61964. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZDA51979418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721bd61db3572bc5b7d83ba13f57af6d3ccb9e45b7b9c4af0b29eee5e45d4b55. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:44:03Z), 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/QZES91814999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7720814a121af4d3ee3acfc9198410cf245465902d89c6152a44462d0f2b99. 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/PLB172000265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd923fd13c3136b2684e4b2867bd56d36e45fd0516a2d3de78afc2a0da492a2. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:22:23Z), 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/PLB172000268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7167fe4a6777e871d628b78f0747f2ff818a20e7a2b2af3b39f92c0d8279eb8d. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/PLB172000267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9789af70190940b6a3cf0cc7853fc1dd40e67700d72d6898aef7a5f2b69cf04. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:00:07Z), 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/PLB172100430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f7771a6f8e5843cbf07b08f98c08f60a3fb79a73ceb4569d84b889a10d5fb1. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/PLB172100526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054caa76d6daee6f7e607aac4ff8cacff7c17b3f90859284eac07bd3f9985792. 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/PLB172100527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2c726e5971014fba6e9c6f17a8f08fb425e6dd908f20ce0bd27beafd0465a3. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/PLB172100529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3830439796991434aab0adf68f5641a1ee01d7a1d34195cc4c97821a7b4ea3. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/PLB172100524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0690c347a968dc81155fd567832a588cb437052c9a8200236f239db9dfce63fa. 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/PLB172100533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01db56aa2be89bfb21b8968a1b114c34b36812883719dd4b669d56e5c9eb6a70. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:40:08Z), 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/PLB172100531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78db83e5d0da0ac13e62ad11ac0d98ed436bce1f4737f494017981b20d770e4. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/PLB172500266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9653e3a3ea4b6e85cb5922593aefc4c0cdf7db56817c9a377d587e1ecc444448. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:55:50Z), 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/PLB172500267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0664b05d071256e28f5a65d1e0248aee3f42ba847d65b82c70efde57fe0b176e. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/PLB172500268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b42dbcb47ad76ff68b42a68387fe9299fd59b70c4b98ed8e2f2f4f9be511d5. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/PLB172500269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4961d9d248412c82c927a382812db879cf944e250b7a0551ccbdacfe0b549701. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/PLB172500270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa49146a5836011c9e01b888b66347b564192b4960c984ace2b8bc7d15d70bee. 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/PLB172500271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5323d920eabc614fe8fbf1fdf2e488c928d0d98e59a809eb6f47e500fc0d864e. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/PLB172500272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced5ecefb6d594782fc0c5452935389b47d604047f61608714c5f4d414abe543. 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/PLB172500273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c23aa0d1ccca0bbec138ba5c2b845526352d807c3cc80ce0ecc9b35b38bde0. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/PLB172500274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6dd5a9b1cf4b2261161158b6bf3f5f6b56c8957738bcb52caebfac1af8cb4a. 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/PLB172500275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4822988a64077ac08eb9aed78624b7b4458778fc91a680c957e15ad78ded7809. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:59:07Z), 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/PLB172500276.