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 0x952a6486fb5d2fd9bc96e4df63598ba88412124a252ad251f9b1301e1d8640b4. 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/be5fd2f4-c624-47aa-8c19-3e43c5def801.json and https://artists.proofprofile.net/proofs/artist/be5fd2f4-c624-47aa-8c19-3e43c5def801.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 0x1583f25adbc3ea7e304faaaa5f12708efbe4393379e4c166c1d41a51f1687437. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CA5KR2101882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407d04e7f3890b8cea24182e7f5bd3405a5572bb98d8d6c0b030c67236d7dbb2. 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/CA5KR2189945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec3d31f97fccd254fa533bbfb50c7d04d44a04208ab5feb944d98211a4f70b4. 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/ESA012210122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231b507869e6ae17b1a638c0e8da951fbd101f0afcba3e1ca7d23f0aaf1b13f5. 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/CA5KR2234404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20f8ab680cdaaf9cc8dcee97b68adc1e22c89bdf5d9884d2739bef15f1aecd0. 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/CA5KR2273716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91cfafae0cc0e56cb3e67fad1d18baa9d1fece97e8549276f06e70a6d84ec3af. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/CA5KR2319048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11ee9979d161213c86c7f08e600fb443ed1edc8e756b273281ae5c5a792456c. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/CA5KR2324060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63efb2cd80dc45025b23bd9d2ffb47c8c5396b260a9392391bae7000f0f1416. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/CA5KR2313974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d6291b53c7de7c080f15ab6ddc06ded53b0807bc3fbee8d4a74067649c0b1c9. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/CA5KR2342479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3831bc0c0b098f92d0bb68cc6a587ad6abca20814c0c065fd2e23f07c21d25dd. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/CA5KR2342752.
I Don't Really Care (Cristian Arango Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf870f54b58ae7f2824d114159d4e6b23bae04a0789ea86998ad5f571ae00756. 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/CA5KR2349626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2e56c5aff5ae92c5570a2ecd58fdf41b9ece8299ee0e6255b3da3ad8221322. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CA5KR2368491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0211b0ad2c6fd252bf058d9352472b5baffa4a2b83ac877df6577c4b2f408ee. 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/CA5KR2368475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7611bd15c1c7fd4675dd121fff2ea9e3a83d571c2263b9a8c23db727ce14ec. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/CA5KR2376375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af14738a67a52fe083c9df4427ec5fa9fbfc2e265f9004748eb4bcfd7887497. 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/CA5KR2383585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564027d7c2c6e4620037a4151b616414f870ff61cf292ca04cf5866cfd3ea4d1. 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/CA5KR2411040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908d5a9529e53da8c3c288f4e35f306972c05859476ae9225ddcc1b9cfb7cff6. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/CA5KR2414763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c88af699179c051cf0e790625a1c2a3349acf9de7cdbc5821ad6b532795950. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CA5KR2434028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30b980e67c4913e13f92a11328b5fd32a631c2e760541f2339e3e6352450008. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/CA5KR2420550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04aaa27ea9844b17cdd2be357f1a39042576244b4d3c8ab6163562f08325297. 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/CA5KR2450872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ef4f5fcbfbaae6d58a655bbf4ea955776cf58740a3cab2639153d79dee94ef. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/CH7812412827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42403974684cfecc09279b13c4623cf3b9a0975a3c3a67b70529d44d0fbb3416. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QZG2X2409573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03342496f0045037d84bcef38ca990be29d5d8a26be93da2e85910b232510e68. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/DEEC33501802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5de0e405e8a11a0095f857005a278dc98e7face7549eac8ab1bad2198b41f1. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZG2X2414736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355f02683df6d1e6944b319898669f3c92b90e5985cc74c60de71174ae13b467. 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/QZG2X2417630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa550e66b81350ea6524da98ed319976b7f7edad9a1f48be66e83bc087267a8fd. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/QZG2X2500572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b11ed46664d21683626d20ac44e53529b0fa481185e91443d5a5ed864084b4. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZG2X2502420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848df39d641e946216a5c9f875553f492737d0658bc22f1d3a44b2ada832b579. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZG2X2502433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3534888fd70ec524461da32e2adead5b3c60426d48b56959e9b56859ce66e618. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZG2X2502445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37db6885df0776e7540c2a3f1cc236c5db1246f5d3340d8c6ab0d5c5e44ba0b7. 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/QZG2X2503764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c211d16489f6ebc8ea243478cd282595db138738759e6f5de259b7a6f497bce. 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/USLZJ1936661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51dafb20ebe172c8d313b3ec41c72f7bee40206b7e2e121e33b99795ee49e2da. 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/CA5KR2105932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e87af56178a86b5f236558f10c779e66b3fba2c9f3789a6d92fe03d4d66be9. 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/ITLCJ2100500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e61a59e1febb510a98318e28f9a2dacfad306cbcbe6cab4ceaa63d792665b8. 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/GBWUL1829244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23db93f4abf77dd7812fc6e6b6a9bca48989f506ffc4746889c8b25aca595f1f. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBWUL1829245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8de474449a2f4438f98669a7a1973076770389a77b1001a4cda4d0fe420721a. 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/GBWUL1829247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af908fe7f17cc47de652b8a506ddb48abefeee028444f676965bce22c992481. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBWUL1829258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194f6d9d9ff216845e764dc8bf3f4e9591ab96b18296c50ff88a39a346eaf5c5. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/GBWUL1829260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea25231028590db6d4f3136c7748020bcdd68daa52b190d7c439333cf19b2ef. 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/CA5KR2469926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2288549de42049473599580fb5582ffcab6e1dea0c31fc8243d46e7f3ef08746. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/CA5KR2323131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb041772ac6218ecf7f243eb52e18473aa981f719c3a880d9e3d9275a8f1b4037. 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/CA5KR2323134.