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 0xc9aa53e85d456e5f0d718b20a9fd8913835f4a6cbbd0a175e643ffa922946427. 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/03fa75cc-ee48-4538-bd5e-9e4a3c5915ef.json and https://artists.proofprofile.net/proofs/artist/03fa75cc-ee48-4538-bd5e-9e4a3c5915ef.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 0xc46d4d24a10a55a954ab32a93ddb609f2521fb906bbefd08832abc46431c2bb0. 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/GBSMU0083120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d40beb864c630a997a00ef3ca38d286b79717193f12a8ad8028f82174774093. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/GX5MY2169177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f5b7b42c97ceba82e025f62173c4f8e9576613e73be46e3e43d867f3d204f0. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/GX5MY2169172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8627acf4c69bed7e2ce71356741a11a8e0ba373e070c32f96a37af6fb02fbf. 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/GX5MY2169173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd89c149375e87eeaf0d42aad788da33082bc06ba005b5788d6e5c682520464. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/GX5MY2169174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e5ca90719cd9b36f0f49563d266407a10c2379158e2fa442635332700c1441. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GX5MY2169175.
LoFi Beats to Sleep, Vol. 1 (Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae39f871f137db498173dcaea58327d43bcf96422687562f675d612d6ed4cb99. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/GX89G2360544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5573a03acb3a24b9ca8f805c97bf8121dc25c5b734e8d01c17040f5ee2cbef83. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/GX89G2357494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8801cc16f4adc64d698b494af488b7e6d9fc11a53a768649fe5b6a29b1bdc445. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/GX89G2316431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32cc9129dede0ceb0294888f439c855741dc3e8117b8b34e14743a487a1f47ae. 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/GX89G2348743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e408ad7510e6b496c322faef27ed3d6344e81c39624e0bb574369fe81d912b. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/QZES52461235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e408ad7510e6b496c322faef27ed3d6344e81c39624e0bb574369fe81d912b. 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/QZES52461235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb64150c04abdcd8d547332d09115bc8d500372b3e7495a1e9f61241f97e70fc. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZHN72446597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb64150c04abdcd8d547332d09115bc8d500372b3e7495a1e9f61241f97e70fc. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QZHN72446597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7d9b69322e8498798967345322e41a32c6a685cb2b4b8c194edea04db14a0c. 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/QZHN72447601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7d9b69322e8498798967345322e41a32c6a685cb2b4b8c194edea04db14a0c. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/QZHN72447601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6861ad63ce929a5725a1de69ddb8c9dea863284a556269b87e644c777a000f3. 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/QZHN72447615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6861ad63ce929a5725a1de69ddb8c9dea863284a556269b87e644c777a000f3. 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/QZHN72447615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2c165b1f75e03bafb450a2f578e042f10edd35e975129310de8d53d1d03d4b. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/QZDA72598712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70961ea890266451e08ab9f27f9c9c9d9d7467382d8fc8deb19b118ecd26fe2. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T07:36:28Z), 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/QZDA72598713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2c165b1f75e03bafb450a2f578e042f10edd35e975129310de8d53d1d03d4b. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZDA72598712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70961ea890266451e08ab9f27f9c9c9d9d7467382d8fc8deb19b118ecd26fe2. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZDA72598713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ab98ff1eac594b44876536050675f37e2c4f2d973f2267e98ea856650284de. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZDA72598714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528c831b695159b819593af8e62115cb739a435f0689c1ecfbf8db18a9c765f8. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZES82542373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123a4f7b57d36a69fd96d0c67b5f50b9bc05283446c1c48c643adddf64e30705. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZRP52524574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f20adf4712ec1ac44996998f1cb48dd5cb9a6cac5643530f21ad3a1a9d1dbcd. 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/QZRP52525940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da51627b445c192caf50f254ef09f4b9c4452fbca178c8cc8825b705b24102b. 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/QZRP52525944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ad4549d1da5b86f936386af480bc89fd5e302b9782af22664c6fea7c3fec59. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTAS2519692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c25cb0579e0a8455373204d69d039c423e47a267c16d0f2d0714eb411244989. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QZTAS2519695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7aeee438211c7d445ab862e7c6b7371036f9092b6a45953015435b3c80e8577. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QZTAS2519701.