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 0x19376516996ea77222970e63fdaccba4e73d963c04870a3fe14ef485ce698848. 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/ae4c2d38-57ff-4ebe-8952-bf85c0fd9534.json and https://artists.proofprofile.net/proofs/artist/ae4c2d38-57ff-4ebe-8952-bf85c0fd9534.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ancient Hues (Rangvarehhaye Kohan, A Narrative of Iranian Folk Music)
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 0x2e5331ecbb3484b36f37b26cc32b05df7c79ad09278ce2ea34c85e66351ce961. 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/FR2X41726168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c4f6fe6bc7a667c370b7c7e5f84318ad71d70240afc702d5a3f0ea4d381f03. 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/FR2X41726170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe248477c7a803491d6a3378a0aa93b27ac5eed506c89af5620f0db600e08f397. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FR2X41726171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d845915416e2c28937a7225e19bdf4455efa27c08f193a7e0ec523eecb2db7. 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/FR2X41726172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507e16d37d4685ebfad23971fb1fa27fc1f31ccae4d468134df1e75bf4e92781. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/FRX201659302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8edb218091042361b4d8ff3828deb2a734dd7746e041050287b9074dc0281eac. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/FRX201659303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0712dcdad288e03fd5a1e118940bfbf0e8dc0c66ae5ba1b976df1f2ead49e4a5. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:21:28Z), 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/FRX201659304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf621c8b266f593f159b288472464cb8383f86573edd8f6a7f271b5fd1fcdb8dc. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/FRX201659307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32014bac18df255a3d65bcaf66010622039de13b12ec52bf8f46381085ae5510. 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/FRX201659308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72270b1c09dcb78d2c579afb15459a3aae93b86e44770f8737bb4e093873f93a. 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/FRX201659309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf450f36c66cf7ca4fdb0635cd85efcd19e129df818251626891d842b94c777. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FR2X41890783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70cc9cad678db9281930568aabe2195aa27e79dd69317c259fe0cbd1f642ea90. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:51:44Z), 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/FR2X41890789.
Kara Üzüm Habbesi - Borderless at Home Project
Hiyo Hayo Hiye (Borderless at Home Project)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa730811815ae001231df971866897c6270f54c0e9c47390b513fab4bdbe9c361. 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/USDY42121871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d711c86ed9738a4d5a45f715849e913c21a6c0789ba11f4d4b5e6a65437b8a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USDY42121873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2c75c39ae95f0998281012a0bdbb4b2b9a368e29c5c5ea45e1b25a27a24333. 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/DEXM82001577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035eac42aedd4893d52976996ed798b1bc587332792a266b99aeab423d17688c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USHM22328791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9f89d24c8fafcbe0b863881ef1d72cf36949d341095be268c86e31934d0ac0. 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/USCGJ2517142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16291e0e295ccbc601292bb7b26b74691c27b9a4f133a7345c6110fa222a905c. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:51:09Z), 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/USCGJ2517144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e47a25a5d6f0507fda6caacc7efb042f1511c3de380f55a4096b6c5932903b1. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/USCGJ2517146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c40734ccc2f10506492b1e3227c5521575e1bd9f3200a90d1192f4dbf50d58. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:16:17Z), 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/USCGJ2517147.