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 0xed768fe13db84c156eee00a98afb9914083ae68f43ccfe1ef03fd918a36912bb. 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/a467b2ce-4021-4346-9609-4d05c88559d6.json and https://artists.proofprofile.net/proofs/artist/a467b2ce-4021-4346-9609-4d05c88559d6.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 0x3a1d61743c204a9d033f44799ad80297f2d5b7f61e3241d17c51076a87fdbc35. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/FRX871567083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f721a9617e50ebf06f92b00a8b13574d155f1668d60b0002bedfac4e4932d9. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FRX201583436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20564c8dff8da71e597c8536e21de9e44d9ea37ab49f3736c7c0b5ba8a9edf4d. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/GBKPL1668182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6058af324006a59c9c056d09af382a1372ea77e18bcf06bae07fd8fe9fce9f0f. 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/GBER71401168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a24955e44d29cd3f4ee4cf17f2df9424f9e6f9a2178d63ef548e983eb129456. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GBER71600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ed9c9b8d4ae1a435ba43c27edd1502cccdfda1a615cf213d0cbe976760e911. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T22:55:46Z), 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/GBWWP1703029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a354db9fc420799e702a9dd74fc1f3d1b68ff9cf3e86ba78e7d076670f4818. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBKPL1936040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc95779a19b6de255a8258cb766bbe85cbc0693e9f506cf988ffd4a9aecca48. Chain 2 (Bitcoin): anchored in block 957676 (2026-07-12T08:20:25Z), 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/GBKPL1936036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc850a261c921ae2b5319aa785619cb127a49f4887c1af6417bbb62ef72032fa. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/GBKPL1936033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d53c97e4aa4db5de12e85bc51fc49f8d8a9b062c3c710c37ecbff6940e07ed. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GBKPL1936042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f17292801a8c6c895b61c781dbedc400b7fe8174ffe3d599712352fa3602609. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:46:42Z), 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/GBKPL1933556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312aa12c01f09cef5bccb9fc5e381db159ebc23f148e6a427174f4cf3894250a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBKPL1936039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd46bbef56b08e68d9b5b7bfa275c0f4b5baa6a813b117e833ef2aa1a34e0659. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FRIDO2212583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2352ac218cab9b4edaae4ef418704107a9de25ed306dfc42c8980308b5b0cf3. 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/FRIDO2310289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2352ac218cab9b4edaae4ef418704107a9de25ed306dfc42c8980308b5b0cf3. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FRIDO2310289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ecb85e983a05b215bcd602cd39c5ec1f33978fc4e258800f809d20a28646259. 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/FRIDO2413529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd46bbef56b08e68d9b5b7bfa275c0f4b5baa6a813b117e833ef2aa1a34e0659. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/FRIDO2212583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f765e669bb62a697a4ac459fb39d5c3c749eb2614c8cff542552ffb71c4f10. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:06:49Z), 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/FRIDO2211238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3230003601d1c1b3199670d4e3b2039d1dc998800b273526d202b71b78cc78c3. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FRIDO2414487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3bbc537f70465783e5659f69110373febd22c6a6674a51540be68f262bcb10. 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/FRIDO2414488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34640ab9d6d00ae18185e5d619bb67086a7ef53d0771e5ff901ef8b6372cef5. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/FRIDO2310290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fceb754d0ed3576a1d86eb2400c27d0eccfee3b309bcb25075965e8cc6e3039. 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/FRIDO2414491.