thumb|right|upright=1.3|SN 1994D (bright spot on the lower left), a Type Ia supernova within its host galaxy, NGC 4526 A supernova (: supernovae) is a powerful and luminous explosion of a star. A supe
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 0x72421fa31a1d86b1763219788343ea3f45da8109f09fe8237fae437f54219634. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b1ff60ec-c158-4945-b0a6-504796ca0b48.json and https://artists.proofprofile.net/proofs/artist/b1ff60ec-c158-4945-b0a6-504796ca0b48.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 0x03a8e972774f0f1c14cf5c00700bf17a5ebaf948fd9b656560defee345113756. 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/QZTAU2366663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5bedc26dce4e26c8a2b2dacb7de3476b53c21f8cbeb317ec3fb29a9bde311b. 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/TCAHI2340857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b275e43344ecb62b5993977b04d7a8a9aa1cfd39d2ed8a1fcbb3d0c414e6822. 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/QZHN42216873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c3c9ee5140403356c8b9bb4983dc01dab536c1e10aa83d0ce1207f8c7253be. 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/ROGRS2300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b20ed5f88b854107ce53ebd84451bfd5d8b60e42bd8f30e4b28fd7a50aaa53a. 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/ROGRS2300067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79184fa0e88198aa94977a70c90fe26f3eaf33a1d41ed0c7460698fd19cdc888. 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/QZWFP2367305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a8e972774f0f1c14cf5c00700bf17a5ebaf948fd9b656560defee345113756. 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/QZTAU2366663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86eec736f09b17c62dc69253fb90d34b1243e0c9c7d8a605f6530ad4222cd97d. 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/QZWFP2367307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38638036bdb80cd7bc34b4ba4b03a3f8cb3fd0d7f4a6a4a0805a09500645fbd. 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/QZHN42321647.
No Signal Freestyle - Stefan Costea Live @ Urbanist Sessions
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8720b70674da5c7711f253c742cecb8c2e181233e926e8cddca230a6420a89b. 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/ROGRS2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09d4445ea7dbee7a00303d46456e8c659c250fc2a4bb2a1e6923d0254db6b9d. 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/QZDA62375097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdebffff63dd0ee7a251a9902eb133d9d69d01f6e93054b03b8d37e320e4bd9d8. 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/QZWFQ2329989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17b4da7204ba7f9a0563b5bb2b9790759c8c10416fc07d07836b34e3584311a. 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/QZWFQ2329990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f2c8dc03de9f3ff30295c9b2cbaae61adf11eec5c455ac1be5138c0a3bfd33. 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/QZWFQ2329991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80089089a1c4ee0dac45dbd742439c48fd63ee19aa09d50d57148b355c41a67a. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZNWY2336800.
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 0x7c509f518c24a55d203cc03a160802ab09142e5cd859af9980b3bbbd07f4089b. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/QZWFP2367304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282f4697e5a1e6ea9575c51e2199c7de676ed147e57e1d266dcb4898e965a54a. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/QZNWW2218377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c8351e26f78bd7071e6781af8008089c777842c440bbe04aaded8997e39977. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QZFZ42248697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0153b5d81c73408e9ca7bc1af1d79dad5b2763d766d8ab09fec6a35f739411. 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/QZHN72356847.