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 0x74ff5da0aed2de5ccd011a9d23155343c52382bde4fb76d11e00870a19905e15. 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/0c008e56-e183-4250-941c-bee901a6feb4.json and https://artists.proofprofile.net/proofs/artist/0c008e56-e183-4250-941c-bee901a6feb4.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 0xe7bd678626edf76555fc9d3427f62c94b136502dc4ab56ce3f592c7a86f9e1d3. 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/ES5152301001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e41665a8293ee7dd4b12098b23fe1d45f79e1351a161590767dbcf098673da. 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/ES5152300240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd365a71d1b8ec5b8fa6ffd0aaa69447c883082162695989370a784e89b405fd6. 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/GBLFP2214494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c19bf90d8e800a9a09b61ebfd59fe926c83075e0c390e4024d81e2422c935b. 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/QMBZ92018637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf3625a54c40b2beb4876becb89321a71874251de60455b82a21a6f123278d8. 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/ES71G2415605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9995a1af4fac995ed1af59145f17bb4dcc0a491f85f081b5ca574106c9272a. 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/BK4DA2320145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c2a77e1f021719fddb4458726581da9c62c14df415c7ee1098acfa594f12ac. 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/BK4DA2308168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeaf259d1b1bcd2a12f6b77b9499998a22e49ffc41fa6a294e6eb6fe446e0213. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES71G2235270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee15adbcd178a450f66b22abcfd5302bc8ad41c459063deaeee25cf078ef35f. 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/ES71G2300970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee816d0fe7a8e74c32299e02b108d8f6e7bcf68556288e50bb32f76612a2bf47. 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/ES71G2306881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36853189d8d59fb39b1732e8e5a867e8c0b0b9269d5da7d5d35eca100628c6d. 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/ES71G2306882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee15adbcd178a450f66b22abcfd5302bc8ad41c459063deaeee25cf078ef35f. 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/ES71G2300970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc94756b7185bb404f6669e10e83e5daf38f7e396fff2806f12402c402a772b. 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/ES71G2249271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x951a9afbdfd96cf671b19939591d111bec63e37f70463d363199c05c093daa23. 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/BK4DA2214031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeaf259d1b1bcd2a12f6b77b9499998a22e49ffc41fa6a294e6eb6fe446e0213. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ES71G2235270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5562b959ef5418ba3758092a7c10150ec6a4b2333651e4fbde5a046c4f55bbb5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM6P42215919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdbb6464e3e53df625df6b868a4a92426ba1b7c1a7a8ce102bf17952eccf9524. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM6P42219218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44f4509acd8067f54af0a745474ba180f23587c7ae69941d25aa4906e15da55. 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/ES5022201962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce4aba09bfad229fed32083cbc21cace8dc874d51c2b1d709d7556e7f49f040. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ZZOPM2233553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3c25097561ccd4af399fdc4a8f2b5da80affe05a62afacf4e061ffb674bc2a. 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/ES71G2219683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531d38503a7e09a023c8af0f6c1c68119e790541e4a06303eaf058e6ac38fbba. 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/ES11D2100647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d588b146df8114b08f2f87c7afeee79934975fd7d22b2bd7972515e2732322. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMFME2195909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c49dff4b6a53e696458bce10eb3334209110217964d31de7971b87c2c379c93. 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/QMBZ92198989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d04cdfcd79964c596937b472be260487f53d970c76578af0b9feb80261773e. 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/QM4TW2199222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b57147ee16c8d3f4048c616ae715de276d97df6983aa8f139893160e2f6795. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMFME2038231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b03534902b8ded031a1e201e6a32e53002e8f74a015c74b4957ed62dcb85f27. 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/ESA031908201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420ae5b88ebe29e7bb6b938390843d624e2388ef90e102271fdde88101758654. 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/BK4DA2502187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b92f5fca07242825fa150c353e20a58f5235bae69b43d26136c0c69e8092f6. 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/BK4DA2501556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04624c4de080944c5ab03a17e7bcbb45d821be1affd1166c2db3f4398f3141d0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES6101900174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50a889010802ce4c0ab691d36af6e56e5671379150eee093bbee1b7c194abaf. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES6101900175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ad9aba053a01476f6441bbcb68606d39bbe1b3f3bd61dc56370c4d95b04f70. 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/ES5152400011.