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 0xaecc60c09e60111cc846ef5e975966779cb0d52aadcf0e649c64403b92406806. 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/9e8f10ab-8c59-4490-82fc-1c4c55e3925f.json and https://artists.proofprofile.net/proofs/artist/9e8f10ab-8c59-4490-82fc-1c4c55e3925f.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 0xcc2940c1a4dc3dfe8ff5d95c475660f33f07d503fbd4ebdd4714039ae78fba3b. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/QZHN72397744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc2be69d1240e270915cb997d6faeb9cf84ee0ef829b7d1ead1b77d523716e1. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:56:54Z), 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/QZFZ22411752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fbbff88cd8b5a0b99979953c6633af2485ea8d7aef837fedaf061f6f636c76c. 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/QZNWS2481664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ea2ed9028849252a9ae3a181d76d46520ab35b9236987dbef702cfe2ea2b03. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:57:29Z), 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/QZTB62437311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb9619c3c70aec7fe46eafcb9d579cfc23a1b2d2c49edd12a98386d970edb76. 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/QZTB62437312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ae5e3a3df42eea04a764f7178b283c9a73d386fcac22525d29db6b76ba4777. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/QZWFK2430888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02fba009cb6e0df6949a34d6eb8b4742ca9b8a1f103b369550cabbe2c95fe00. 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/QZWFK2430890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601b56b7a359c3b2a6a3b916d3503cc1bae7782609cc35e0540295ec38ae7bad. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZWFK2485400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8c05ed0330efb3a1b0c9a02e32b05622102b50a1c01ae89742af4c57de6d44. 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/QZWFQ2427131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a7e148c5d1c21cb75aaaa1ca4f2e90ce85a659d4b756feb400a23d5e04ff98. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:38:46Z), 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/QZFYX2513123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59fdd3eacb9edd2f9484f2df742e100be81b6022590ffda571bca725555ef1f. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/QZFYX2513124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a37ff5e3111a48817ab728f775586b23fa1268d19c618535dcbbf3ffd5c76f. 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/QZDA62516577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7acb3b4dba7e68401f7d668ca2956ce09294e5ebac2f050235a5eaabeb610f37. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZDA62516579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8047a475636938f13363801e180556e86d3ed1a7443dacdc7c15206358811a70. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZDA62516581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5884d8693a8d070481a7bc2c3f44dfababde7b7e98947b8116a80ff5f4206f89. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QZHN62547949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6599a578599bbb2405b9745a80b50c031f607b5e9955664c571d4483945f33bb. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZHN62547951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688872f6c81b608272de8668effb5bfe7e6bb35fa8d30abc99fc1c41387f7316. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:01:49Z), 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/QZK6M2586993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902a116734c47c15a67e200caeec75db86e782c63abce9111f694fd30de3eebf. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZK6M2586994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35190b1b94000df0f27bcb805b7d5c8c7c243f4931cd6d29983b92c9415af93e. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QZK6M2586997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8997d639b09152e3135f14ad14d047ca9324905ac2881f523f96ee26e5ae790e. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FRPES2510070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1407ac324a3e67f09c03ceaa2bc017661dd4fd08d1d73f833ff0ce60432f56c6. 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/QZNWR2500625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16911bee7aa1615b6d3bbe666568e1cd2425e6e7da659bbc6636f4e6beec8375. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:55:03Z), 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/QZPLR2525405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e13a131b71f657aac7f4f180503d60082e33350e9f86866fd8c5ad3285f6e0a. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:28:34Z), 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/QZTAX2550445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707a9d199851117048f858e82577cafb1ba5dd11b3ee77e0904253424f995cba. 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/QZWFR2538793.