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 0x54e457ddac164c7438f840f79ec4e57369b977b7fc9451d51adda56f3737c137. 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/233ad39c-6812-483c-a38c-44bd03e080c9.json and https://artists.proofprofile.net/proofs/artist/233ad39c-6812-483c-a38c-44bd03e080c9.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 0xabb0de22507598dbd050dde773885dc048763991a7423425f72a01afbe69c77d. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/DEA769301630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69bb85770bede6aa6182db35a4bdd22424ef69bbb7bdefc29c2207c36ef942c0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DER419900064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc88de8dcd89786bd4a132623f4662aef12a13758b5cf8b27be4d949130ddc1. 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/DER419900065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0cc0cb4fc1825d95457c4ae24debb527288b82a0f2f470d03a69a22cd5f0d0. 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/DER419900069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67728f3d20adb363829f3227ee2e51cc613de2acf922c6d88da5d4f705587ccf. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DER419900075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f42e40d3925fe5d4d1aa60dfbd58ddd484692b960123ea50b0c626606e0a527. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DER419900077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8515e0c85a9c0b5f819eff1d6df353cdf6d8fcd2640a4a1a8105edebe000d7. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DER419900078.
Drosselrohrsänger (Acrocephalus arundinaceus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b16b93a31446fbdbc593d3c20a95a7e23cb016735ee3703f6e7e8c9bbffd6d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DER419900080.
Waldlaubsänger (Phylloscopus sibilatrix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed7cd7ff9b3449a03c08052e98fbd5c39727a938073177a6f84cea7d634c230. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:02:22Z), 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/DER419900082.
Vogelstimmen - Entspannungsmusik, Natur und Meditation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf950ceb461d152e3dc2e95d1ed27782e7e01ef54094cf9b3485a8b36d6b33320. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/ITO101118057.
Vogelgezwitscher zum Aufwachen: Vogelstimmen in der Morgendämmerung, Naturgeräusche zum Aufstehen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f3e4c62eb03d6327314525427b657d3bd49be7d9dfb8d811813d3d8ce45a44. 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/DEKK92300710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe562215431efa3f1636320df87acd9761bc83dbd8c36679d8bbeabe92720cceb. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/DEKK92300711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd93b8fe131dadc81d24fb9223c484a6b928d3cb08da0373ac30e4b38f2dacedc. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/DEKK92300727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c350feb9454e72938e03581d8a23e73c9a1bd9eca3558c8e4ee327b075d0d5. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DEKK92300712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1339a2f492c4ab6aa72b3b017117ae78b3d4f2e3de81985b1c4834e4b1d27726. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/DEKK92300713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda92e0706c4169fcdc47d62aa655f5835ad9c6820e59412a2d0438d32c5b2c73. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DEKK92300714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa027618e61aecc781bb820288bb796a058c508e9e033b39f1566cf8af73bcf44. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:49:24Z), 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/DEKK92300715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd2aaefb7219761c0a7507251a0b5fdfc130a016ab436109aab6583396ee71d. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/DEKK92300716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391480c893dc6bef46c2f9f2b1eca351665e28d0d417713f8b05c6735356643e. 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/DEKK92300717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1efc466b1ab2071f3f6d3d47257c13099f8868721cb94baad4ed0b9a82706d. 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/DEKK92300719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d76213282ebcd65f00934a8346b56c5a8dda7b1a11f040b6c5a82c4e3f519d3. 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/DEKK92300722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707604fd545cd97212888b9bd773b33367783fe4b9e53e532b262ade529f508d. 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/DEKK92300724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b379a67cf7d6d829201799c53e7c0b76568b1c24087a03d890fc2b1aeaecb58. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEKK92300725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b2ed4e7152d1e7e62aa5ad64f41e16568be2b2c5c6c74e878a20f14f808081. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/GBPS83997331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d75465e82d82893f637b947671964be623e58b1fab14ee6194fbbe5d603167. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GBPS83997185.