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 0xbf9c0ccc56a18e5c5569bcb23c5be793d6d0be5ed7cf06b87a0d0fa55911b12d. Chain 2 (Bitcoin): anchored in block 953759 (2026-06-15T08:04:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b2cb56a8-5754-420c-afed-d1157826ad69.json and https://artists.proofprofile.net/proofs/artist/b2cb56a8-5754-420c-afed-d1157826ad69.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 0xa57a8b539687fe7b5ac58d3b7fb9a52b922a5137351810605da22df96965cd9d. 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/DEZC62437695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7c7aaa1be4400c19917691d2fa3c811c34b8df87e2cd2da25752c22d758629. 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/DEZC62437697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9174039c77ee5d51f5f197d56f9b8ae08c92f98fcec90bf9eb9003b1320b96b7. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/DEZC62437698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ce3c52b043284568b285432079130e87e8d85998a9cd8352b70ca840f966af. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/DEZC62437699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfdaddd4a6ec73a56b3312d105a0397dd246cdcfb812961fcf6c6ab49181b0c. 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/DEZC62437700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d9de6c7ca2303a8c98ecb907d0e741a952999828349447cbcd26fed3dd51df. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T03:02:02Z), 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/DEZC62437701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c52b3c8ca0ac6d7f11bf1f048b2904bb498e9f3ee3a77683d5c18d7bd423c6a. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/DEZC62437703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db2988efcd84b86b4475f05238d95b97b961e14a29946dca6fa2b3e97d07e8e. 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/DEZC62437704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c41352ef1db9cc8df572a67600506c1170335484a7a0f740fd8183202ac69a5. 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/DEZC62437705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc51a5d72894bf95754f7a20b6df62b5c96b2460dde2778eb5ff23cb54cef68. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:11:00Z), 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/DEZC62437706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb35b6291022b8e22da6078959bcb09c5e356ce0d77dab1d45e6cfd51379e9e. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/DEZC62437708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38bed43851ca652a050256cf59a125996f94ea6ca0f7d5ee182b1b3b1ab93af. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:16:13Z), 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/DEZC62437709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01390a900ef66d6caac04b4753af5a090dbd8e853fd78b3bab449c7414b5ceed. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/DEZC62437710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a259c6bde5dfa14ae27039c08fc8fd318d76d25224fe2148326ea8bfb2dbe1. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/DEZC62437711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133c3872e1db0dd545fdd115e57129b16eab6aef6941c7078d06c3216db26c63. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/DEZC62437712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22889eccbe03bbd5e55ec4228882faf330aa756e490e76d1d4ab3c07a9c1f3f8. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/DEZC62437713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5608c40a214004b53b4ecb275f7420f4e1ad90fd0e84a81f3490e92f6535f439. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/DEZC62437714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52dea1b95842f3333fc06d8667e3c9c3305b96421294bec573c27e6b7d90f1a3. 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/DEZC62437716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a56d70959f01a01fdd93f39b8ef5fefb3ee3ed7db52c0417c2acef2d76dd3ce. 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/DEZC62437717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5d2b51262b2e4c3aca883e1dba3afa1134f03f7dadbaa65f4f29c757416ded. 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/DEZC62437718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e655adfd4a5515569d0ff4a50072129af7c732048023b1f288e8e2953645f3. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/DEZC62437719.