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 0x914425b6334d10fc4ef663d1683c63a5f7f900e26388f2b3aeeb950b50f026a0. 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/2e2feb43-091e-4d19-a065-3e274c418dd8.json and https://artists.proofprofile.net/proofs/artist/2e2feb43-091e-4d19-a065-3e274c418dd8.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 0x63031796bd981a3bd6bb82f0bb1212a3b14b2e91ad569af5cd35321363c33ecf. 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/DEBL60447904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba914059c371e2dfa1f63011dac5a801644222db7bc856628e34e9e7955d064. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/DEBL60447908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfde8e01ef9412e3dbb5e607d17851dfd7c5b360022c415562268ab622e77ac2. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:32:58Z), 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/DEBL60447912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88c34baf6d137c1bcdbbfa7c3f6fd892828ecd0420a5bef5dfa954007307348. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/DEBL60447914.
LOBEN präsentiert Wiedenester Jugendlieder
Wiedenester Jugendlieder präsentiert von Loben, Vol. 2
LOBEN, Vol. 2 (Wiedenester Jugendlieder)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01a886e9fd8d2b0c3d51c422165f5f4b596c5227345757ffdca788c95338a19. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DENL81804341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132c6e5db9ec0b5f64339f28e26de272cc413601d15d7893069e90c27d52bfce. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:40:27Z), 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/DENL81804343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c612c72508e62574e81df1ecf3bc18cdcf44425b5966ba8da8f41d01d47c73. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/DENL81804345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9b700f45d804e91be4687b1b711dd11aff14eae52542d9055c89c2a0335264. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/DENL81804346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03398d7653028fce6cf09cf116311dfc101d276d76c8a3e912919bd573c7ed28. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/CH6541923902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a0078bf07618ceacb15461a43a75c315ac2f48b606c7672b00b472e5261339. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/CH6541923903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8acd0221f64ae4bc850ba56000982a862fc00ec2cc1ed24d81bafe8f7f49130a. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/CH6541976113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e18eae851b18234d6b2abd654ea2cabfaedc693efa10dce72dd0367cc9d5f4. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/DENL82014692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa92b9343412b07930b8388cc8cb30a868ce4f58a5e817a14a543a8acabea05. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DENL82014695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e18eae851b18234d6b2abd654ea2cabfaedc693efa10dce72dd0367cc9d5f4. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/DENL82014692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b762b36e370d82777a5b6f3edf2733d12672fe6a30fa94e26d6112be2b3b9c. 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/DEZC62592277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa92b9343412b07930b8388cc8cb30a868ce4f58a5e817a14a543a8acabea05. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:43:28Z), 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/DENL82014695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a4e49401c9f499c6e200b5c9bf5d97de81a635832524533e3ca1c0110a3fcd. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:45:29Z), 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/DENL82014700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87913b1edf03114698f5fd2701a1aee7d8bfb7286b35a41765f80b3a8fe07c9b. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:49:35Z), 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/DEZC62269138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0d40cc8cea8131cd1ecb5d4c48ff3bb3a0d0e07b8181609281854facc5a08f. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/DEZC62266555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7eb719d2d5283abd786adc1baa9a1361e02e97e2569b36e520234c5a8ca48a4. 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/DEZC62277911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98eb2eceeff68bb99a9fc9d96d877369034d2b49cb2af1b9bb90681e4d2785e3. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEZC62266556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54774fa7218f2e0a3c55b9fcd4ac129db354218c7c5994fcf35b58c1b95e461e. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DEZC62211694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6bd2918504da3329821e5cf3639921b9878360e8ffb1d69e9329e5211cf0b5. 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/DEZC62406045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a8cbc898833c111c2337905ec1d614d656f84670b9445e3efaa3c8892abbd2. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:35:50Z), 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/FR26V1525724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1374de2593c57b00e6ffb57f6ffa0f186620f0dabb90a39a3853e3a780a65383. 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/DEZC62587400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029226703ca114f54f88ec3f52e9413b37378d07110b9b60d00cb7690e9c7a41. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DENL82014694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35ca46421702b25a25246c7d4509c6949d81bde97557d937543c184e398120c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEZC62047125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132c6e5db9ec0b5f64339f28e26de272cc413601d15d7893069e90c27d52bfce. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/DENL81804343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b3d7888be6837075ea190c2fcb1fa1597121ac44551e6120680f07e529fe25. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/DENL82014701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9b700f45d804e91be4687b1b711dd11aff14eae52542d9055c89c2a0335264. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DENL81804346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb763ffa88e8290e9fee6762218e4eececee497da0ea3e05af5835cd90d44fcf. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DEZC62370122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3de14aa591e688d9571fce442a2116b8ce0d2f33598117b150b6a8212852b8. 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/DEZC62597821.