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 0xd2090a21d5abd03f6208e983664deb32503931ab897d31cf84f2f6afaa67fd4f. 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/6502b6c9-6906-42b7-a9a5-e6da6e9cca1e.json and https://artists.proofprofile.net/proofs/artist/6502b6c9-6906-42b7-a9a5-e6da6e9cca1e.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 0x98b7914f838ba72a6f4615daede91d206a3ec197ef9e7fba0eb77d13cfb772f2. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/DEZC62367628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d27dafe1f656684587fe932de71f5396b343b87e0dae26ca940581c48c1785. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/DEZC62367773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea3fa29c6e8f6aa979179c0e91e9526bab8e22c8a319c32eaa0fcf67941fe8c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEZC62377905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf49f30252e603f25641dba736281c775a18974ff51c4ee9ee019f704d17eb2c. 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/DEZC62377908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35af9a3d4addfd46ac9e0e70360aeb99c2afe7d7d7107a163d13cc35acec2cdd. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:27:53Z), 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/DEZC62400833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcebab27ebd304dbf5f2578b500966f88f21a429510503fd4dd73d41e6b284082. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:56:00Z), 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/DEZC62416066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb343bd9af52e0ca4f2456f8a4e0a9fe12018c75be1650d4034368348e3f18b. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/DEZC62416059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9a80a4ec88ff4b9bb802c6e9deeb246dd4887541775c25aef886fd1986a381. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:29:30Z), 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/DEZC62431470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6adbd47a327dcdd33c34cd9bebd4e224ce9d46310550df83972487e92de199cd. 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/DEZC62432852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87501d9854f7bab27be93d614e48fc1947ccc8c80e27b3a048c23beafbb9cb59. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:57:48Z), 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/DEZC62435426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91beccde22c4323ef597cf87a8d6a50912650d6eb2ad37e7d03b13fd1086c7c8. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/DEZC62437110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637bb94f5f072dd231b8feb782a7027ac847ce7c92e6f12289a8a3b7f779f16e. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/DEZC62446701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c76703c049b045e68dc6bb80ee4f60169148641b986f47b8fa35fca9807f45. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:56:55Z), 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/DEZC62460929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e62ed58a0965e5cd1de0bfe6815a54382582cae7e079c6d49c0c600e1678e4. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/DEZC62460930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360747fd8d1d1662555dc30f11816735d85fa18ead3c694fed92bda69caf37f6. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:16:40Z), 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/DEZC62460931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2d238877c5e1fcde2c06dce4b83c31b0b7aa23bd1b0b4b5fec779fa5bb8773. 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/DEZC62460932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc0e9dab5512789df6fee1d9070032e9ed4c448cc6a2ac5751ac95fa45e6e97. 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/DEZC62460933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9a80c2318c96838db2eca5b025dcfd259db26411e74b1a729c8e8137ddbf84. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:40:17Z), 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/DEZC62460934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e63c67a7773e0a9b01bb2f7956651224b6e6e5dfc09f16474977c47086cfa50. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEZC62460935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b87482d28b11ed789bd635dad409f8bc2a5b405df2b4937030db6d47a5c832. 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/DEZC62460936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85703c4326722694abd339a548e03946d9b2c1b3f51cc5f070a19aa95e448db8. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEZC62460938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc007c471536c3147f7f265b46fabdc12ed79326bb0b14a48636196557cb644c0. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DEZC62505017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a24006962206b66b4aaeaac173dbc0b2e741bd8003a6c60fefe18b33e3383a. 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/DEZC62505018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99665d8245deb446e65c16b57d544e950e9c270d71ab761f3effff44a2512356. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/DEZC62505023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80718d896c095630689225857b971c328a40c1e39d9e399141897b8ac167fd7a. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/DEZC62505033.