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 0x988ae6a319c511993df814e6b13f0b8c826d092daf7ffdfe25fa5bff62dae815. 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/2fd9b649-6488-42c4-992f-e8e31411e0ce.json and https://artists.proofprofile.net/proofs/artist/2fd9b649-6488-42c4-992f-e8e31411e0ce.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 0x9885aafefae2b567fedf01a64963ac4c8cf6923835e9d218619b662b1c4d413d. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:16:04Z), 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/ZA56E2001293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3477be3306e277b53f019f2c5c388bbdceb54858ba21a77b3f1a68c07d9ea438. 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/UKWA62000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8872b2e9740dedc7846409c2af930b63b3c3f7d95487f5804df91796773846c. 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/UKWA62000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d0fff022a67fbad7be63dd8e48105d15a09b40c1c524717eb32465d6527233. 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/UKWA62000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce588fdfeb865b99a38cda570f3445173cd3942c0dcc8bdc0b97ab9aca018ee. 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/UKWA62000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55becafff4e6e7b664586f6cc24e47ac7a18cbac4ca73a50da39ef8991962f3e. 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/UKWA62000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1435c2c22a7d77dbf7fcda56ef20f0bf58ca7325b08d9c832dcd249115a1f8. 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/UKWA62000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3477be3306e277b53f019f2c5c388bbdceb54858ba21a77b3f1a68c07d9ea438. 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/UKWA62000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8872b2e9740dedc7846409c2af930b63b3c3f7d95487f5804df91796773846c. 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/UKWA62000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d0fff022a67fbad7be63dd8e48105d15a09b40c1c524717eb32465d6527233. 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/UKWA62000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce588fdfeb865b99a38cda570f3445173cd3942c0dcc8bdc0b97ab9aca018ee. 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/UKWA62000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55becafff4e6e7b664586f6cc24e47ac7a18cbac4ca73a50da39ef8991962f3e. 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/UKWA62000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1435c2c22a7d77dbf7fcda56ef20f0bf58ca7325b08d9c832dcd249115a1f8. 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/UKWA62000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d594d1dae275f8755ad1cd9f3fdd54431e7ff63b867a8a56ed389c7b3c91cd. 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/UKWA62200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf14599a0d0112e3bccf9f8019f3d1187a746a0500657d30aa5b363b768bb2e4. 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/UKWA62200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb265ffee6c771ee03110285d42effba7d8cdcab7b502a4d413cf06034647f15. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/UKWA62300052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb265ffee6c771ee03110285d42effba7d8cdcab7b502a4d413cf06034647f15. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/UKWA62300052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a74c08d8a82daebd90976ceb117367ff9f1955159755826582fcd391674a13f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/UKWA62300054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc617ad8a8bdfd619d85dbf9de4c858c09b81c41baf1dc3fe826a9b7fe180e6ae. 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/UKWA62400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68297892f7e4be6401c17403bc6d56583ca69132b3ec58805da86b4ceccccaa7. 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/UKWA62500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0d693b6ba3a29b115223b07f5e2a160852e654c8dadc64d66166225e183c4b. 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/UKWA62500027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe07bc53f67a98ca93c1b1d23b97363993e23c8821ecdc0e4e2c2cd0ce91e598. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/UKWA62500028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6024f9e610400f6db12264ca53930e37007881e4d9bfde3e262a5ea27f98a201. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/UKWA62500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c58e93fcfe209be35859ace6636912ad6246a1cbb73af164bbdcd49e1f3f9cc. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/UKWA62500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae382b594c6d762b1fbb64934bca656d53b6ee3aa3c1571bcc6c280a8a5ce57. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/UKWA62500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa44e2ae363fe0e483a7325fdc4d31a84558bf2a1d620d90eda2cbcd4b3619e2. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:08:26Z), 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/UKWA62500031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0306d8fa62890618b8ad8fdd1bfbe4bab165ff66b18553d4e3fdceec702266e. 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/ZA56E2302996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc501d51a1c97401db546153e234dbf029151d80242d873c7970eeb514736c63. 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/QZS7J2298859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0840e1694b9675c14763909ba819b4f5007ec469adbc494d4190259b080ec9c5. 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/NLRD52321631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304a581028aa285ec75d7687eed64e517e005d23d738fd69c4ccc1b4a793f9b2. 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/ZA56E1900429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068482b81ce2a0f22971ca0a462a23c74fb923c640595d03a4449086ff79df07. 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/ZA56E1900430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec3a0bbfb96d67c01acfc0c782eed8023dc5d4f492204e87ed5014578b6a0e4. 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/ZA56E1900432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32fcc9a954129339203d6a89054f35202c70311c3e66f87ded7615897c6f63e. 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/USUM72222073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503aee03fa5909672b349ec91df04bd984fc3437ed298035c5d106791a3ca442. 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/USUM72222074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506a85adb15eb99ff60d736d9fc5a28a013f6a2a224da87859dbc1b3210379d3. 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/QM6N22056990.