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 0xa2c7c397df4987c2954cb4b8ce3591047e3a42b7b715c79e3b319b7520ba6506. 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/e0aa9e87-6237-48d6-9336-eae78b8a0957.json and https://artists.proofprofile.net/proofs/artist/e0aa9e87-6237-48d6-9336-eae78b8a0957.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 0xd0422be563a042331ec7867529dc73e68e0d246dd35f43a0b3597356029bd548. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/USETB0611136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb6b363319f5764c0aa186799a53c8c87c04abb5c01cc4655ff34191d178eba6. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/USETB0611143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2dd8554e7e5505f4704c04c9d3f92e30ec8d15b7b77da7095e68218f71da607. 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/TCABG1229319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc43540ec2ce3a133369b1eda1534867198ab40657ddf864faab44a2b479db2f. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:33:11Z), 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/TCABG1229321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1df511c7bb34a2d4bf94c51dd10d5d0a7f6a199bcb6ad496b80ed3d87efb5e9. 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/TCABG1229323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3b16d5f77533b7c3de2ceb0f4226600d19e42680f453dbb2ffe396ab67f83d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCABG1229337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1733db508dcabf19f1b5694dace886c9817d9850a2e3571df058b292f562aa68. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCABG1229450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa833e1c35b5d5e64ef36e349d152fa5a8c9df4fe28185edda04043a4da0237. 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/TCABG1229452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb1c16be06850b4a968edc9b231bce7437d7b05231915a778e1348ab8a003a1. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/TCABG1229454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3bdf1062fb9a7ba805efd679371b6e4d527c37f92acc8fb95e500bced0f2966. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:35:24Z), 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/TCABG1229455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72bc589dc4a7bb55b6f80c349b50bc42bc795ca5a194ecc4a6dc9cb7ff9f1c9d. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:23:14Z), 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/TCABG1229457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230dcdde2e5946c679cb5caa453da4e981dfaea1f205eb15e4f782ef752f8ee8. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/TCABG1229463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8aa92d6a2272e853526ed537f4ee00f1ee85bb2750635e705e4f19231135e9. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCABG1229377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f963f241da4a35a1639d34248f81858e658152cb1b5e005b6140d3cf4ff482. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/TCABN1394078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e228cc08244a2d162d44844e10c7f25256a9b1552f0caf74381f6541e403b40. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/TCABN1393922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf4d37bd433b05d918402a42d601bf8ec7741fc9dc3888d6473bf9f44f76643. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/TCABN1393925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59472184ea69afea850597195de4c6b2b726e74bc1de723e82bc87e9348947a. 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/TCABN1393932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39162fe21e3500878645043bd4d39ec3f20b34c280ff403c888b7e32cff7eda. 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/TCACF1588901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9fa957c8d4c4197ce973a97e0c4f0e7ca94d6bae506cc71d91ce0522a1bfcf. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:04:21Z), 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/TCACF1588910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf14993c2b3877491d4e1f4a01228c792763e00dabe1d72867b51cc5411df14. 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/TCACF1588913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb175d6aeb796011333cc6160966d65965136ba8bcbd17755ac509a6cd76cb6ed. 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/TCACF1588914.