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 0x921b8822d4757b9947d4e13faf5f5cba0c986bd7d82a26423085757b7b5b627a. 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/0d464c9e-085f-42ba-9021-53dfb121d678.json and https://artists.proofprofile.net/proofs/artist/0d464c9e-085f-42ba-9021-53dfb121d678.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 0xc579f90328f78b1c78713ef78513d1c70fd2c8eb933af403285dbc169b079c30. 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/FR9W10201306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17bccf9b03a5c3d60561cbf6c143a4ada2398e88b0c878f29ea8a7bfb3a1967. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/FR9W10201307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd779290d9168b73a0a091e527f051f0750a91e17a84dcaf6ed1c974bfa3d2172. 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/FR9W10201308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac783193bc19d74eb29a42f0734c2443c2fdde8c3efd6d94b795d4762eab7db. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:40:12Z), 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/FR6P10500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5f17ffa0061c98c7ee95b7bed66b9a4c54181cd08ee5d4e2128644cf22ab66. 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/FR6P10500040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206437b58d3d3ebc48ebf1a71e42631408e8b49c19e88698332fbe98dad575fc. 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/FR6P10500110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab20b352def122b83ae22cc896398f766bdbe57eabb0319bd293755c0cfa2fe5. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR6P10500130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37d9c7b97ddf2b6781154b0fa41f27170422743895dacfcdad53f6491c15be8. 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/FR6P10701240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3193bd635346c5f2e58fd1af46afb81f453ab01d9d28ce265c405ac3ea4145ac. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/FR9W11008315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2344b5fc3004a3e32eeaa8c358ae8a2aba911063c5d8c8aa49c289454631a981. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/FR9W11008317.
Punglistic Hangar 18 - BURNING HEADS Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b40e35d9a2adb34492716095d5033dee98a51898d2680d28d08d7510f64d45. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR9W10301523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41c2ef403486ecefba5636e2503ab51c26c40abbb59373da1b22f20f44e1e6d. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/FR9W10301515.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797699f3935531b284684da4b50f7e7f822706dd8899adca4b7e3dce83f3b4a4. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/FR9W10301519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec2414fa2612e0148dcb36ba9cd9668052befcd21c5c06f2e385497b076e658. 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/FR19X2000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb147041962ceaac9eaf508e37353e5bd167df2b3c8eebcd5b2c9155f6427f1d. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/GB8KE2150628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83bd0010e1d6804efb8963f4fe6aa7e855a8a04160c4b00acb446b533fc96aa. 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/GB8KE2150629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f160bcd9f15135802cd14d99779b2eca26cc63f156bc4ce05fda4848328c24. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/GB8KE2150632.
Don't Drag Me Down (Social Distortion Cover)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee504c3efc74c6d064457586fef02bdc110e5a2bceb9c1e8e71d97c6df3c7fb. 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/FR9W11119734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc194370b99e2eb57bdf1bc5173454434c2f1a1fab5acef6616c11c93997c70. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:42:13Z), 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/FRX872588023.