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 0xf6c8db3cfd519363dc23427ef0d88c4c864a4670fbad682aaf08f8d5d4a39a8f. 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/7a6f708e-865c-4152-8ef2-3283a0ceceb5.json and https://artists.proofprofile.net/proofs/artist/7a6f708e-865c-4152-8ef2-3283a0ceceb5.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 0x61bc86aaf364a35c9deec89c84df8f6ca36a87eac544aa5bf3d40e60c135d5b1. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/USGT60800049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837a4f8a1989db36b681d7de87961977e5c6cbb45f25ef9b0a5cb9c8a4d8f6e6. 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/USGT60800058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0dc589426454f4457ffa65da7b374a8a12b3aa7a868f224ae7b4cafacd590b. 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/USGT61000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4212d4853545232659ef1dd20caa7a462410fbc9aca1856f9c6f4b810d3aea41. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QMFMF1300059.
The Power of Same (feat. Muhsinah, James Poyser & Stro Elliot)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68fc60694a4723306efc850193023ba5cecb77a4eb4371d0c6b59b9a05da561f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBMCZ0601245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb8b61ae99abd99666a8856790765aac6f9fa04011e88b6be93879565f8ab57. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBMCZ0601242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371bd71ddf67314c1bc21feb2d95bf0e113d2599a449acc629d837e66fade2f5. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GBMCZ0601244.
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 0x6bb6ed38978e43586764721c399452824f8da0913155866e7a6b0c0c6931d0a2. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBMCZ0601246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf34bdc47c58c387cceb63d424f4bad18061f7c81963ac153d5607c7579d430. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBMCZ0601247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d4cab6abe983afc3078ab0978606a8eecf4ec6cc24dd9d1acb8ad11fa53fb4. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBMCZ0601248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ac186c4de65560c040077162455cb362f0d545101ae6ada02251797173ab39. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBMCZ0601252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4560f93a77ce0396fed76120b785c72e8e5262d45eb9267b5b9a7e96b3a4192. 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/QZHNA2592773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd2bd2fedcf79dab2ac36c524cf71b695cb052e8fe9b9c8eb732907ed694d1c. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:56:22Z), 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/QZK6J2541482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeab5bcf3f3932f436a8e79b7edbb884dafe978e1d994322ebe627b4ac195237. 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/QZTB82575559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a18948fd8f7390532baee74a53698fd6c3c609e92a40110abd9d3a9acb2f08. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZTB82573673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1a1ffa9567bd89156b15fdd66c78f133c66579562e35ab49c2f801ca88e7bc. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:27:21Z), 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/QZZ7K2540770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cafb33149f37163b5edd74a88ae47e80fcd098c1e0d6f9a0e01842b771858b2. 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/QZZ7W2562053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e854ec29d25c852105f73f1ad96e749f2b2ac57ec3bc5f679f0839186c5704a. 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/US25X1903105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2042833b47558a449f286848ec2e6bf2e2e9c79bb6919e9a8e94869db0981a. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/QMBZ91339133.