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 0x5029d56555b05294c4514a8ea5aacb71e539e0c57ed93c37c180803e27d04367. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b8956d7c-0f6b-4420-8be9-1a2b3efa8c0b.json and https://artists.proofprofile.net/proofs/artist/b8956d7c-0f6b-4420-8be9-1a2b3efa8c0b.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 0xc640586ad14cf3c5e26d6225499a201b7d81806dc392954d625e37cb4a981b1a. 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/DEZC62269433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482fe448b6445152164d2b78f8e5b0059b90f22e9bcacc097755d113f5414d98. 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/DEZC62269435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c7c09d1284e3a148c3fa46141271881c9f2573aee9033a20d73a9cf1d80085. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DEZC62269437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d1b9b44d417880cd5f1a69d1b64376f09431ad914534e65115e363832e2fa2. 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/DEZC62269438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7f6d7a4a98e17810a1304b8d031dee2caf0e3aa9b4f498baa23923c5db6bc0. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/DEZC62269439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ef5229e633f59818fa719d0c9436a06dea549559f41e2f3c1e09896de299e9. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/DEZC62269442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d09325d2ec23506d5c4d2f8e8e468cbcb7d82e753fc550128059040ea7065af. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/DEZC62269443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7810c906ef86c22d77caec31fa1cde3020dec1fee301c460fa2b892cf28a87. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/DEZC62269441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e4207000fcea726776a9cf9247be3e53fab6cd3adc055747ca9c54ec145cb7. 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/DELJ82013521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef82717955f49bd3d5b9a77627272a9cb5724f2fbb14338206ee59ea5c3b648e. 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/DELJ82013522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692b9c947f90c2c7ad2bd1d8093b7f091c8f4e64b1de3aa1631ccd50e65e9158. 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/DELJ82013523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd618b8bbd60061c7a61d3e837fc5011cd6939f5822c19efd3e075f39938e482. 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/DELJ82013524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3cf98514d91adfa0b312f3efc9f4c88d6c8942e5da6ce012560e3a6d33d4ff. 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/DELJ82013532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba328c52e690a1551a6e6cacd2968445668dcf738727aead78994a423b58410. 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/DELJ82013533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe2dcac5866be44b659dbd2a70a26af049828e0a11b623ff3619a5da2631742. 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/DEDE32525406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d6105eacf541201775ce0394b30fdec7ed1240ebb379cc9217c784311732cf. 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/DEZC62461142.
Die rechte und die linke Hand des Toifels
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d2f4992effc6b854a6fdd5d641760237ec866fd565eb3b4a5951bd5eb964cd. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEZC62363517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c36a5ff20883f209b76579beeb93d4f6e472c429bc0617e6151c1d6fec1ff1. 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/DEZC62368649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d2f4992effc6b854a6fdd5d641760237ec866fd565eb3b4a5951bd5eb964cd. 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/DEZC62363517.