thumb|upright=1.75|The Edersee Dam in Hesse, Germany A dam is a barrier that stops or restricts the flow of surface water or underground streams. Reservoirs created by dams not only suppress floods bu
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 0x76e11be672002a693f7a7194f7edfc2c957fc2809377544deec8f586c5b39969. 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/111b981a-905a-4f9c-837f-1891dc862467.json and https://artists.proofprofile.net/proofs/artist/111b981a-905a-4f9c-837f-1891dc862467.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 0x7434f59e98699ec4afe471724459bf872e4c5128bc65aded96ba9466557e8fc7. 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/GBNFL0600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fde7eec1b9bb6919bbb1d5f15273213bcc8fc46f2b2d17cb4852548f3ef1af3. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/GBNFL0600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4670717d78911de3decafbf23ac2641de1839f6258e72dc59f7bc3b6d9ed5c. 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/GBNFL0600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7434f59e98699ec4afe471724459bf872e4c5128bc65aded96ba9466557e8fc7. 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/GBNFL0600003.
G'areeb Fi Bladi (Stranger In My Own Country)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4670717d78911de3decafbf23ac2641de1839f6258e72dc59f7bc3b6d9ed5c. 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/GBNFL0600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276640a22341cb014558ddd41bb162a8ec624214a5c365c8a1258956d3538572. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBCEJ1700192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58aaff59bb764d2cfdc2540efe6bbe12c9cbf21841df85ac621809f6cf5f5c3b. 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/GBCEJ1700193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e786d53c84bd76a31ae0683039cb348d2eb4c4477b88e4c5c93cb59697c9b56. 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/GBCEJ1700195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4303c152543bfbcd626dfa280662b041568f166fe7fad26cbd0fcade4a120a7. 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/GBCEJ1700196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636d5dc2341526c650b1d5076bd48178954fc63b4ce898fcfaa96e837494f998. 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/GBCEJ1700201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213660c8ee43dbf4efb077ecc467ae4f23d38739a57b2ab73fba023dfc3b66a1. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/GBCEJ1700202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcedc0400e2c4e4357de02bc6f3d638c47ac6dabbaff6bd864f902bb65df87f8c. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:35:16Z), 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/GBCEJ1700218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8995c487254ae5a8ce0beb989cd098736a3df9f6259c9c61bbc66d6e6c0ae5. 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/GBCEJ1900034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ada9bbb5b8ce86841ff93228aca31e8b11b2e442bb95333289187abea4b4fb6. 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/GBCEJ1900031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca1337b21c78af83ad0ee4f56fb2efdbacd71f4a5053071610b1a1d0ed48be5. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/GBCEJ1900032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048495fe2382756af0a88dfe4ba2abd9fc1e9fa5eca1f6dac65c79c4948077fa. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GBCEJ1900033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdddcc2c15e106588b26b05ce56575cac49a389a44c214c860324616ee0de0175. 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/GBCEJ1900035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1722d67f0a4bc06ff1d9476ef9f1eb7b2d07af154728facab22eb3dc9a521f4a. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/GBCEJ1900036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc31b26550fe56bad7801003bf0a137fb9428224bebb7db9a205ef9ad9b83c6. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:23:32Z), 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/GBCEJ1900037.