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 0x2b62d63e48bb3c46e64e7ddf8d228cea2a0c73b3f4ca39c1df318611d29117ca. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/45e5b6e2-cde8-4693-aacf-3624fde23027.json and https://artists.proofprofile.net/proofs/artist/45e5b6e2-cde8-4693-aacf-3624fde23027.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 0x4480225d362904740ff55b9f0791ae5b655aaf5949a29f7469fc490deadb4a5d. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T08:02:39Z), 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/FRS182103097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce63c77c3fd779073c3a1f214eab42197d2451db5bf1f71b33697609cd8ae27. 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/FRS182103098.
Corazón Mio / Caballito Mala Cara / Arpaschallay
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe48adb19d4cf479650d246976dc5deede100f91eade7439e3eda8913d249ef. 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/FRS182103099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5512ccf3ee44936ec30e0dd006de53ba87202d2a41738409efe149b2b46a5c. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/FRS182103100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998076806dc7d8830f7fe59c6e714e737943750114bff72517c210ebe6ca65a0. 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/FRS182103101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874017e8c0be89e7959084aa1b5cc8019f0c1b31dce7517b6f9fbf49ea7f9a5c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:15:48Z), 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/FRS182103102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c79dbe13b0f6ef4159a77a5bb329b1009cb6ad0b952d0754056425a7d101c1d. 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/FRS182103105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf380c050c7696adb0e8e5921735314bb2240f23a14480fdb8b7abe25424751cf. 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/FRS182103107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4420e4e6f2e39a31710318fd6682bc08d14dc1bcd8e6c4aa5f954f8a6fb30789. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/FRS182103108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4391d63a3c3486112bb4c9cb16ee44d4c070d3a1980efae6f30f30a3073d4ad3. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/FRS182103109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668ce3bda14f3bd936ea6b3b92fc6fe5f3927979c6b65d2a800da1279b42ac21. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:38:00Z), 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/FRS182103110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c510b0d2fffb84b552b69eadb8d54d335df97fb4626ca6b3cbb7b5e28a3edc. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/FRS182103111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf2dfd353fd4a9d8d86b59d4a5c6fdcc97ca73a66c944b1ae740c47dab223ab. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRS182103112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845fda8e597b6e42ad03806f46fcc0d289569186288d6de9cf38d40c019b989a. 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/FRS182103113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3c9e371b0d34c376733b5a31833b4cd47a6c9a3574aa886e895b349e3bcab2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRS182103115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088c0acc9a8e4aa6142942dc04dac590e950d01ab89d64e642a27ca4d5bda0c3. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FRS182103117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b5bc270397326bada94fd8f139eded99d48da701f043e6a8e6090a963a0c94. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEUD42180389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63fd9c0064b8e9bffae0b0004e6edc960c003598f744686e2dc3789725cad9f9. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/DEUD42180394.