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 0xedd205d5304ba33f5ef574f65d8bd473321ce96b7eb4fc8e7b71854cc76d7fd6. 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/b5b493ff-f29c-4aa4-9cce-e19d828ed943.json and https://artists.proofprofile.net/proofs/artist/b5b493ff-f29c-4aa4-9cce-e19d828ed943.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 0x8a5ba2331d4d990c4ca8490eddb6a05b28711039220c88d7f2fe29fc8141963a. 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/SE5BU2259068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6747968755ec97d7a2bb665a7fb0118e65f46008fa92b5fceb34456ac3ee64d. 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/SE62M2338288.
SKITER I DIN DALAHÄST - GRABBARNA GRUS Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7752967a16b6736079d62bd3dbb5137819311712d668d6080872e50dcf4cdea8. 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/SE62M2350043.
SKITER I DIN DALAHÄST - LNDBRG x Svardh Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653427c6dd967a7bdbc1fef620f9e747a2be23cf9777a570401e038c331353f9. 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/SE66N2311603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd3050a67cb4c3657bda62cc8e7938c725d67f967e26b6391a3fa2cf58859e4. 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/SE6XX2322205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11f2369a57d43838cf230e0d00e657132b76684f7d06a83fc43288da76549e8. 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/QZTB62304930.
SKITER I DIN DALAHÄST - Greta Tuborg Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3176cff99ac21302d5a487be6465af96cd0806a209402f075f9a66616d68841d. 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/QZTAU2315071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372cccaaa4fe61c3cd3899a3b832a5d773f3aa5ef2d7891d1463b8f3b6fe6c1c. 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/SE6XW2335011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881df1d267b736856d0362a767411466ea8ea271d3bad794080fe6016a78f98b. 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/DEPI82432900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849b8df10bdc84de55e9eb174c57f62fd5211e30cd1821e01136e7d8ea9d7176. 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/GX8LE2467498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608ef89c97ddf739e23b769997dc9375e7911c65d615c7b0cf4950b7c1a0ed88. 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/SE5BU2508034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96495d099fffbc94dc83442db0c7318e3091510946a2e03b1435f10238a2348. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/SE5BU2508035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe358214bca3139a423223edcb7f2438a295ac31bf3e54f768d375683bc214f60. 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/CH7812417572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdcd8a8f2ebcf25d01d405bc2710dadee02a518614b2d6f8468371bcb99adba2. 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/CH3132400510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f789e68f5dc1eacb6040831948fd3b874272653ea6a9effebff38ff24d21fa. 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/SEWLR2435901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9832ee041de8f62c71e4782ec811784af0d2a34ac1637a500bd87fb7a7455999. 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/DEN062400519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd829b5f134bab484911177359e6053883cf2ee60358e25fae08e788cf0d9c7ce. 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/GX3HH2434114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c717818b5640054aaa141e31e4cae58ce288101d70d0e2d955d4414d2065463. 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/GX3HH2416479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1df71d09fbddc38977827b425dfcf8d9c448ca363e017d5af5372626b3c341f. 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/DEPI82423006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5bebc7c62ddeb7a89cc89c9595207b518c46bf2025f81a6ef34fa0d3d39c455. 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/NL1DT2400328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57ddf13530358d3ea407eb12e780d5526d80d26b5eb95b930b6edaea611711d. 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/SE5BU2489540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2972ad71c7067a213a94ed998689ea738762aae838f2b73f112610d146a6c8b2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEUE12431970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dcdf660929912baa7fdbeb510f275a14f160a9b39a11aad1e2675ff5d04473a. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/SE6I32497856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ee86e8f1f05ea8dfea9b35d8488faabdbb8aff29c5ac48a2e785991d0209c3. 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/FR10S2431400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc25e761a4b5596088773c7c7f86b8c1f79e240776f7a4b20d361c790dd01232. 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/CH7812400061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042c5c49b6c3b897a1a8c13bbd5ede3da553227ec3dc562815043be105ad87e0. 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/DGA0Q2380377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0eae1a07745dcca55ec295685348361874d6b8e9851956d083d25280b80deb. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/GX8LD2326873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb574634172064fb2e736dc408ac07b96682121221ca25735db40d99bf01c267. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEPI82450847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1df71d09fbddc38977827b425dfcf8d9c448ca363e017d5af5372626b3c341f. 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/DEPI82423006.