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 0x9235a6b9b0c3ee4ce7f480502e5ed892e55fcdc92fff0c02ce5ea484aae170a3. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee3fd36a-7606-4e1c-9124-8af732a07400.json and https://artists.proofprofile.net/proofs/artist/ee3fd36a-7606-4e1c-9124-8af732a07400.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Freak, Go Home - Live in D, July 17, 2014
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 0x219067c11b696c98d30b640a8cd484772de15998a9531f75d4ee64e4a6b7a9df. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GBKPL2029642.
The Only Shrine I've Seen - Live in D, July 17, 2014
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb3f2f8d8e8395493e0b213f8e9062e07541aa1bae9550fd44a914fc42ab4ea. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/GBKPL2029639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72be857dae2379e9fdd805e3e30e631a472f144cc4fee105e8e674429b43c9e3. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/GBKPL2029640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c75c95a8b414ae4911a845115634e54eab9489f7a1ccafdbbff8ac89dcd1d96. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:32:20Z), 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/GBKPL2029644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f36fc96172528cbdccb2ab148fd1e679e87a1b84563499909c39db9bce72523. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USMTD2100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc764bccb8992a4ef597fb0a35ffc2fb12c320d440cee73dd428d5e1b2080f021. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USMTD2300246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23062f5beff27d989b9f73e30404afaaad3e4d5d18b6f7584c7191e03439794. 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/USMTD2300248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b58b45067ee113d6d101cf218513d965d0b5b153877b83e8451484fb1e7779. 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/USMTD2300251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6937abd0430e9ed34836a74812848d5f5a58387f400c2400672b0898f3d05c2. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:09:08Z), 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/USMTD2300252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67feac655a2e5f9697675344afc290bcff647233eba83c01dc569aa5066b9592. 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/USMTD1303936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5670981a990e54d87249453a9650415668bb13615c44146a05169732dbbc2151. 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/USMTD1303937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76312527a388980dc16940cfe0eb718d6389508ac889bf01b0f466e8b7ea4ed0. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/USMTD1303938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3927404e6f1a6401f77cc38039c03e6fd7e0c7f6441e00efe44ca66fd12db714. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:53:19Z), 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/USMTD1303940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd412cfd04bdcf7e030e88994ca68b3c3ff827b5392d83304056190db1da36365. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/USMTD1303941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce576ebce94bab24499ae8409671fab953349b599c37fed035fcb05a1926922. 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/USMTD1303943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4e55c4989ce897c1dec0a0cb934a0e1687a543d5c1a2035d39fc98841ffc37. 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/USMTD1303944.
Paper Trails - Live in Paris, June 5, 2023
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9068fe924061bd3f6aaae089bf63ab9220c0e86ee1d4b59434bc9d8b544ee94. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USMTD2300481.