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 0x0c6abc2f63f9c801e982c525cf15e912eea8c7dcfcd1d6fd0cf958f50eac8b80. 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/c8c7ae44-7902-4127-a96d-7f922b233057.json and https://artists.proofprofile.net/proofs/artist/c8c7ae44-7902-4127-a96d-7f922b233057.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 0xfdcb8cdbf143eb47946829b67dfe1998940b85b5b7c1dd9a83804ea9acc19cd4. 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/QZTBB2452783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b21844469a9efe5a92193e6ce8ee03e21a0e660a7cfd551d462fbd0f5cb0dc2. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZWFW2446764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1698f202d9e7708bdef849bf7171923f192424a1d1b039b19db618675ac26292. 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/QZW9K2495622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f52499af06774ed6f4767466dab183b4d9337aa4e88838eac797e83b8ae485. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:11:51Z), 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/QZW9K2495623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a8e32572919610676e023ca5f4fab0e4f4503ab480d35c15b12aa058d42d1d. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZW9K2495624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9633e27a32afa91b37dd9dda83f403432f012b1c25c97e9cbb5fa6279c666f61. 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/QZW9K2495625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5152ae8c2eac2ca531abb07993519dfdf94906faa65f2cc601555ac641684b4b. 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/QZW9K2495626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e5dc143778ac90a131297e1787826e66ea113e844b5eceea8ba739f7428f91. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZW9K2495627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae919bb9f6b8afa3d21a51fbfecbb0184a4eb0a8fad37410e52f0233aae098e. 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/QZW9K2495628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04fa574fd23615ca2fcc5f0ca14c41a76fbdcdab0cf4d74a4b11e2213d216253. 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/QZW9K2495629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102c63a99658c3479d6feca6f83395822c97a9a1e386128cdcf151f441be803a. 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/QZW9K2495630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396ca6923c76158c9b76bf07059d5e0e674abce23716bbfeddbc9d3e32aee127. 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/QZW9K2495631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d63a18bee1d5aaca379df5bef034c716f77a78df2aa7c0f2066ed4710cf58e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:21:22Z), 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/QZW9K2495632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af9668313a314a0c9ace6c591c30f2e4451ac49c841b7d36652570f5302aa68. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZW9K2495633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87875b20beff6cc1f7c339ff68c5d8eb61884a532415996969874570c9f9d905. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T12:00:37Z), 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/QZW9K2495634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d05f8666a2d991e4a30c4679f74cadc184c853d16da9e57e1345c30ee990f7. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:11:18Z), 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/QZW9K2495635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d40bbc356602d00663cc32583d36cf5f663685ca1674e595760448f23b20733. 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/QZW9K2495636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3512c10bbde504f14dcd180a5f9bbcb444dddf76782de8d6b9bf6e73b505300a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZFZ42538092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b53e804f6b1a39f1b91009557151921e54b9c0ff5f65573e982ae66045fbdf1. 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/QZNWR2514064.