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 0x7e3fef6d00b3755d704fa7058e3eb47b94177ff85abf1d288ba96fa5687d01d3. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea19c8cf-4be3-4038-aa85-23273f2a3024.json and https://artists.proofprofile.net/proofs/artist/ea19c8cf-4be3-4038-aa85-23273f2a3024.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 0xc6b85c23899193959eaf098beb5dd1bce9ddab07bc4bbb9ae406ecba1328eb18. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/GX53U2451872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bdff1824b2393187decf0438157401cfd8979791fda0b2f759b4ad57f8d072c. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/GX53U2451873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce195856cbcdfca6476e5d1a6f837ab2bae6e2cf2cc3d3030399f05b6ef82e3. 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/GX53U2451874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6cbc231f9ed9c138a4eab896afe137ddbacc25810d0a8f2135642a74d80f124. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:26:51Z), 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/GX53U2451875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e036bf21dea799981b3175b902b70a46efaa3b693b8af0025362c2c0c17964. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GX53U2451876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b513c5d4b1c48af24baf3d11ef9105c002cbf436692a19d25594758251c3f5. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:04:29Z), 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/GX53U2451877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc7555abf070144944630384cd39a97ff92f18026be91ef0fd0b06653418d0a. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GX53U2451878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1530c8c8a6a1851794f1c44b1a1e1b33794b14a0ae986797f594723f6cf84a4e. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/GX53U2451879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa261b8e1d56aef040703c4a5b80d69b8a3c6c30d4a0a5f328dc241595ce6e967. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:34:59Z), 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/GX53U2451880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577b9a5490d35e47ee1c48d3acbf041d9186303185ed5659c6ca91638d6cbede. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/GX53U2451881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86aa798236f6115a385f3a4bc96e71184bae30bed014d7747c07a5c5ee249788. 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/GX53U2451882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c8f6cbc76a08e8f8f161977d93c5bf66dc8bc15ea0d8d2b4aad5389c677f81. 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/GX53U2451883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb663cdb6e7e439e54a2c3be21d7a924416adc755f159243720b33952fb84579d. 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/GX53U2451884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241d8e78f334af43588c3a417793829a51997ff8d184d7416e3489db88e0b9e0. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:32:41Z), 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/GX53U2451885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f80b1a7981eedfa9df22c15cc198b979e04a64a090be1fa7abc3094fd3946b7. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:22:00Z), 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/GX53U2451887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56ef0210d0e1f8574c7040169febd3dbe5aef1e0c7bc68c563519e0d9e8dbb7. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T15:20:50Z), 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/GX53U2451888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6112cd9bfd4472c281221758cecfd4fc394665dcd60a3c0e9836a70cb459ad3d. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/GX53U2451889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a118db50ac75cee44603cb59db172419c6e761b8292dc6f6f7a0917aa22f58. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GX53U2451890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bceb82bbec9b4756b41e68f33fe0bc2c44790077d633bb8892e4f4e90ab9746. 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/GX53U2451891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444e547aa5b269ef50c4f60ea13c6dad542e2b5be6b483342bf769b7f1a27f8b. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:06:41Z), 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/GX53U2451893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb05a4f4c015aa892b8994894348a21cb3c72f7085fd7ba621b6fea270a1147f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GX53U2451895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e149f4ddcf0779b7d634c4e9d3f3f0e6189b011efcf3ee1166efe934f6f9f5. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:01:51Z), 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/GX53U2451896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc50c1586632f3f21524c13d27544693f105ffcb222961644524e5e0e0ada1b. 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/GX53U2451897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5673e9c9c33cb476c92c2c92dd00f564c94644d9b1f376b55e43e4b80d40111. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GX53U2451899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dca874cac8e949471af4167584026fd4235f379d61af83b36e9c65705404f0d. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:03:48Z), 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/GX53U2451900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2079d5637c4bca105b5bd8e5d56236389458ba224864d353d14189ce0d492302. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:40:20Z), 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/GX53U2451901.