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 0x47689ec57cb9dcc899ee67d654decc4c4bca2664041af5821974c75b490828d2. 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/bc4fcbe1-5108-48f0-853c-3778618138d3.json and https://artists.proofprofile.net/proofs/artist/bc4fcbe1-5108-48f0-853c-3778618138d3.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 0xbb6bae1c4c6603ecdb0865f0eedb0b7b083c01e0211ed77957033f041341a81b. 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/NLS6R1840362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127401844e6263ec6f0a76781aebb3c8addb5da96b6ad16ce942cec535768bc8. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NL1AP1937266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa180e73d9b5369ab33e8f5e2af6ade7a3d2e79ed9282ad50528742ca3afdcb. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:04:23Z), 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/NL1AP1974921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab4b1aa422631cfa6439afe495808818f32a02c9780e45623576dad2cf18071. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/NL1AP1982602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b87a04babee9ed498056a16c96f111999fc88e89fc480f9059a66af2198b43. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NL1AP2009888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050224ceb1c4a04b30827462b1ee57b3bf280d90b82119651f18420d9aa82d71. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T23:02:34Z), 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/CH7812180339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca65eebacfe35fd5435aadba4533d7aa72bc3a02473a8e97a90173e59c33ad2. 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/CH7812215147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0862997cd3d5baef9a06a334276865e981cee2ad1fea32fd2752409d5e25cf. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/NL4NL2220173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52df95798282d0cdd54a55ca2bf3858787abec88e0d34ee5b3d897a4c257fc0. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/CH7812239352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b72b9be04084ccaac5b1c4c3e4f0510f426c413b18de112dfa03f27bd7be370. 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/CH7812344936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16ed997871d4f67910d4d9533c0b6bcfb196a8124d53581cb73710427426665. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/CH7812346669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb594118853b5e49ac4bc36aa9be1ffe2fdfe685d3d6c299ac398f9756b08e7. 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/CH7812355966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48550e72a16067f9ccddc158d3cf1c775260ed318668d2a659f6635e15982d6. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:43:58Z), 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/CH7812359776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c07c06de2be27ccf4779a3016354daff1dc8a3471eaef9881648950252a253. Chain 2 (Bitcoin): anchored in block 957531 (2026-07-11T06:55:18Z), 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/CH7812363193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3719709788e7bf3be57bdabcf559de018350a0f782d04b08f337f5d16b6f66d. Chain 2 (Bitcoin): anchored in block 957534 (2026-07-11T07:10:38Z), 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/CH7812366992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e7ea3e64e2640745f253339e9d742002f4346794805bfeeb2cbe36a3ca8a21. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/CH7812368798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b01a74cc13e5e3be0706b22d430a06bd97bd3f903220ce9c795a7f2270e877. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:04:06Z), 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/CH7812370977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca5da95d12f77378dcfe200963b9cac0954b78c078d2f80d8bc3aacc0776916. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/CH7812402737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1d2528f811fcbaf819359c1341efa7f68c38d00ec9f42a31d655d919328767. Chain 2 (Bitcoin): anchored in block 957539 (2026-07-11T08:09:42Z), 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/CH7812406130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ec02b712f1dc719aae9db7aa0f0d0d497963494bc0cf054bf2d923db05c283. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/CH7812421677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc4b888f6bb6e063d0ce5129c37c212f36e6eac057d1906f767e8f786933e0a. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:03:57Z), 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/CH7812414181.