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 0x0043f69596995284765e34fe21d8eb6a7163f58f0a2eed0ec10b862b95b87c27. 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/c52df9d8-b8a8-4d91-86b3-610748ae5f00.json and https://artists.proofprofile.net/proofs/artist/c52df9d8-b8a8-4d91-86b3-610748ae5f00.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 0xd29038310b2b929d13610fc84fae7bf4511c0981829a21e5b8aa154028c12fa5. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:48:51Z), 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/ART0G1804332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898309381904a73a4a57f514656c52636e62f738ceeaf829ef4188b0c37c3078. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/ART0G1804335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a05ed541d161fd7e7339625f833ecdcf520e8a7ff2b82025bd9cb7c3199ce7f. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/ART0G1804345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc814e2463d2c78959aadfe4facb6a5803a2ac8f0c949dfd00f3a6232e27d68f2. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:03:54Z), 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/ART0G1804353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b763ead37812d880046fbb509f911ac12b5531d75366278bb0b46d77f61547. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:34:09Z), 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/ART0G1804359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f36af81f64ae2b382569fa7738ed5758f5c058dbebee91e20497d44873a41a. 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/ART0G1804366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23e676f5caf64348ed7222e0a405ff65f9c1f2e42dbf90383891d466b0acd9d. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:22:12Z), 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/ART0G1804371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240704b84e57a93c1fefb9d28daa04a6c893e2800d4faf8a009553d1e3efee3b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:21:54Z), 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/ART0G1804373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6d3e7afc26a5b9c872f602d96e04d0de47e65f8fa6985a93136862c77f0a5d. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:55:56Z), 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/GBSMU4527995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9d2372bcc6c7009006b2778d09a8c3a106dc26501f3b42acab43180f883c12. 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/GBSMU4528000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7b9fe72dfb364567527b7a33860250760759e4475db1f1afd86f135705f55f. 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/ART0G1804329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc690dc7386e3456558641d11ebe47a29a1ecc123b1f7c9f49e0c8475436b31fc. 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/GBSMU4528021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2466dc7cfb2a4fd534df7f0a544992e89f719688a878b755cb104952b247af3. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:40:40Z), 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/GBSMU4588700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e2843bc107b34f0afd122155fa773538f6a683edf0ede80f61f06696c6262b. 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/GBSMU4588701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeceb7ac7d99819bb50b0e690ee4dc3db6824ccd280597a3d1e24024d3c8fab8b. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/GBSMU4588702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad31fa130ccd5d08b2c4b22a01156f44de5876be014197f3ac4698eef3d1b97. 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/AEA0D1854631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ceb04039c1cb4949c147c2566818fa3d63296f584cdf400abc6fb8a817fbcd2. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:55:30Z), 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/AEA0D1854632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e66d55be12dae356b07bcecde1de3588b23176d21b36ce796d90db451bf1da1. 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/AEA0D1854636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326ea386d926aeafa2a4df24ee2ac9ef7d2db4d247ba2a6061234bfb8c14cca9. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/AEA0D1854639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91cab09cc499691bf02a333ac3c9d9b258d99428d5bd7b29c8d566607e500bf1. 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/AEA0D1854620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e951bed8a4ce6608eb8acfa3862cbc37f3320ce9349ad4ff4122ba17bee56e. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T19:02:51Z), 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/AEA0D1854626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9ac35dab247a7090659f3dbf1b25fc011c925ed2abfa4ac31c3d9693ab51a9. 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/AEA0D1854629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15fb77f970ce30e7fe69027b612eed6a7cb1b8f3bab2860fb5d548ead9b2047b. 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/UYB282495728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38ec91aa9ef8d6c70d26ae8ada1d58d795b05f4a5567e56a1a5902da3c22464. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:10:42Z), 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/UYB282458524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1332217e414d795205013cbc6655d451d8c9864a0895d187c68e2f510e7c8846. 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/ESUM72302713.