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 0xba8de035fc1e41a3f4c88376d146b27391944645d9e26e1425116d615217fb4f. 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/f7a84f88-401a-4498-837e-a237207339e5.json and https://artists.proofprofile.net/proofs/artist/f7a84f88-401a-4498-837e-a237207339e5.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 0xb0cb40cc91c2cf51570249f72dd274adaf1d19a12ee9f0a73d2517615fe77ae9. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/GBLFP1721782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3996d0182a8feb4e6d1ef1c3ff50be4b9001e29a7f4bebd1dd1d6eaf1d318464. 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/GBKPL1811258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3996d0182a8feb4e6d1ef1c3ff50be4b9001e29a7f4bebd1dd1d6eaf1d318464. 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/GBKPL1811258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6debf468418abc9c3f9cdcbfa6d9642ff0d36d9ba879a267a6dce1272ab8ef. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/GBKPL1826322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a63aa22a13de11763b03e03db16fa3e3c085d30ff7c03e92451b82831ea0194. 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/UKSHP1900026.
Spaghetti (Toddla T Remix) [feat. Nadia Rose & 808INK]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382861c0fce9b893177cfd576cfd44fd945c816f4f1887bb198e19477a99b096. 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/UKS3T2000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2172d0632f3bd364ba26431d3987dcd9660bcc09b8a01f42a6638f6c76ce8e3c. 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/UKS3T2000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f10f6390150b2a5e61dfc812ddc863c6da48f231c3c6e505276e96c39a10094. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/UKS3T2000034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13fbf1fed82f4a58dc511609e7c11425b142d13b03a54924db15a859a9aabeda. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/UKS3T2000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636d54c054f77bc6518b57f5d66af6d1e4dc7dedb64ed6df36bac74d46d193b0. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/UKS3T2000036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94a5c5f91f29efa0c4d3d728fbd36dfced936787fd4c5e191749c0a6e06beb2. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/UKS3T2000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68bd5d2d285b6a169ffa52a63e729f43b13719321f6c7fcad855dec61e11875a. 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/UKS3T2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe938fd73c3c1f8d09d5da04df9fa8382ae89c95de2a7f3e7b0088a74023eab2. 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/UKS3T2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68bd5d2d285b6a169ffa52a63e729f43b13719321f6c7fcad855dec61e11875a. 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/UKS3T2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8ef8eff0731bf83286b93d980158afe53fc255e55d4bb3c827802e582026d4. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/UKS3T2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1773bdf7856f655390fd4591d3572aa95bfffc45462bd4b0b3820e819ea7fe6. 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/QZLBC2328483.
Jujutsu Kaisen (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55bf6d090817967c325aa2c130e3faa7d411367ab039347bc0c63a4545d12e5. 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/JPV432100187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e1975cd6cc400bc8c4fde4de1d13b72abd8604202e435791272b7aa089c361. 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/JPV432100222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3ed12e0abb23407ae0b0b7aef2c1ca77a3d70d5722635f764ee36f70b4320b. 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/JPV432100208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08a7ec48a3533fa271e2b486a732e9aa9217ac7b1566ed5fbb85b8d42ef668f. 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/GBUM71903565.
All You Need (feat. SNE, TE dness & Che Lingo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61338c31c7acaa75d90c152d9d0377e85132ef76bd441671e3326fdd291eb62. 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/GBARL1801094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913e5dd55eb0d14aeda3dc6dfa188b09524c2f448a0b9b317712731429f1cb40. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR96X2095413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2016ae1037d195b08a8ccc807743627be2172522e59044207c303b6bc9eebde2. 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/GBMA21994455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424cb709d51ae13df52bbe147c634bcf888d5a1faaa06c5f922d8ae31ced8291. 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/FRX872114336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424cb709d51ae13df52bbe147c634bcf888d5a1faaa06c5f922d8ae31ced8291. 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/FRX872114336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913e5dd55eb0d14aeda3dc6dfa188b09524c2f448a0b9b317712731429f1cb40. 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/FR96X2095413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913e5dd55eb0d14aeda3dc6dfa188b09524c2f448a0b9b317712731429f1cb40. 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/FR96X2095413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913e5dd55eb0d14aeda3dc6dfa188b09524c2f448a0b9b317712731429f1cb40. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR96X2095413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df3f98b89117ac39747e93c0373b94f74e6a43be5de7111c58a8fe91618c3ef. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/AUVWE2100861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df3f98b89117ac39747e93c0373b94f74e6a43be5de7111c58a8fe91618c3ef. 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/AUVWE2100861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4f340bf2abd2c84771e0ca8bd32a91c527f7142fc6116a0e4ab70c18c4cde1. 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/FR2X42124498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0364f5b4f3db338ded0cbd5d6867814e4be73e9272a5d4ad118cd657f92ee9b. 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/UKS3T2200010.