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 0x64a1172b31ffc068e832ef3c04c9295686338a8349c798ede52af8d1c8becb68. 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/edba80cf-3949-46d2-b62a-8f0a61cd37fc.json and https://artists.proofprofile.net/proofs/artist/edba80cf-3949-46d2-b62a-8f0a61cd37fc.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 0x8eb1948841df26826acd24001d9ccc29365b8b9a5cfad731d2d18129be9f668a. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:39:12Z), 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/USE831570465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c7ff109aee77bc7c796e357fe30d3b61d6508b7561e5d45b60c090e1a5344d. 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/USE831570447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d9e2723aca150b16247223addbc98af31dd800bcad076754d295789fa65c5d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:49:14Z), 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/USE831570466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e79d4bd6f3adab83e02a48e09a910f6fd87e5affdb0f2a1ad513b27103acb86. 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/GBSMU8170194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30e2d11fea013bf636b2b3445b57a8faf772001444083e63520f931db56ab89. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBSMU8170195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6c1417cf56db1921e11485bbceeb17a675c729d97632fa3b8bb4aef40ba551. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GBSMU8170197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c200fd76d1329d24ac5efa80187be85fa0fcd0fc77bc79722598d1a99159f16. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:29:26Z), 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/GBSMU8170198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b3c8d64d77d7397ebf8f5d49fd9c6c79ce13e91c0d6581f997c9ba51e56c06. 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/GBSMU8170199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a52b7e695df3af7063adfaadf131c6cb8a38a551f11921c2a179098066c503c. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T14:04:51Z), 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/GBSMU8170200.
Wir sind die Jungs ganz in blau und weiß
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fcff8f56b012971907e37f87b5c385c85d65834981cbb987fb994044c8c8dcf. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/GBSMU8170201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c68fbaedc8c1e62c4fa9a55b022a3c9dfda90851a5e14b1e904363ef38a350. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:35:47Z), 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/GBSMU8170202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db21c8d3f9d06e957842ce4c4c0d485f6ba9eebf47fe2fa7a42825880e58be3. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:35:41Z), 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/GBSMU8170203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104743d24529aaebaeeb27983f7b7340ce848cb8e9b3c9c8515b90524c4f0a6a. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:35:46Z), 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/GBSMU8170205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80973d9566b029b79db6276d57bfc7aae60b10d8459bb29e637b37f671e861a. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:29:07Z), 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/GBSMU8170207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd370597ac65d5f35a0288c47ac102120a2e1da960a944ac52e2ab3cf9ec22c86. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/GBSMU8170353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b62298302811b6c2bb0919d3d77f900fb2e76710da391a3ae527fd293952e36. 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/GBSMU8170354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf36128512bb26c61ce31b197f21691bdb6d4098593fd0ee27dd6a81b52b86d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBSMU8170355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490048cfe26c94541fda4db54ed4314860f105f45f3c8b7da920838fa24f5547. 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/GBSMU8170356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa03d28afc8d9f19663a6a0ce61b7e6eb12cdf583db7400eb85c583fc37e8f2d. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:28:28Z), 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/GBSMU8170357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3a2a92c117f6ea7b08ee619d4fa0fdc569a0a90919f01b87082d6c1c43c1b8. 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/GBSMU8170358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9292619b4df2c1a27c0033f955e166335fa8908a0672a73e945bc6547529a2. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:54:14Z), 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/GBSMU8170362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa42e175dc6aaf77dd258ecd01b6b6f3acd25512a2b2d234a19fcf7d1498e9cb. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:24:23Z), 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/GBSMU8170543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de32c5407cd593f5dd11c0dd19e4a14472a070e5b9113620e08a10315d87525. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:42:50Z), 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/GBSMU8170546.