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 0x8c2c2d3be4604ef2f68b63763f2a3fcd40f5c95790d9f1238eb42be8f4e8108d. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a53e472a-f061-4664-884c-3711d0b4144d.json and https://artists.proofprofile.net/proofs/artist/a53e472a-f061-4664-884c-3711d0b4144d.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 0xb901caa0c2be252f7853b54b73b88de3aab6c1f788f10e3a59b4d9f8aaf3f4bc. 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/JPW462548261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7419a6ca41e44ec97902d39c05f8d5d3afa7dbac262786378d5cf20176b7e0e. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:46:22Z), 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/JPW462548262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715dc7eaf6062ac6b8d6e1ae7f4d3c0478a9aef04d99d36562855360852d4250. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-21T09:06:29Z), 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/JPW462548270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eaea881cfaf459a76f4825257d418d2f22ac05789fb0ad1c0d9216e9dc076f2. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/JPW462548273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3084c17434ea1c0e5b637c31facb201bf9da915521d21e82ef8369daa20661b. 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/JPW462548274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb236d5e07c4f984bcbddd7992c10aa19b03b78986be8eff07a7b2750ca42489. 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/JPW462548283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc163d9289da620e6f32b5a78db2ba786b9fac759cc05ec9cfc631554006507e3. 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/JPW462548284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383c3d61480d69394c62ce059f22b9d3e86bfc7e0669c77f8164a48423acbfc2. 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/JPW462548288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590f23408f683ad9896e43e6a4585260185732747dc9d8a5a66a633de732bb2d. 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/JPW462548289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a8d4600ce1e71f55fecfeb765c15bbe6d6770c4499d0ceb2337010e8ebe1d5. 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/JPW462548291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927c39956e9dd4b6df7c4b7e66c16092e1fd6551a2dacfda85f8aa70222759ee. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:42:23Z), 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/JPW462548293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc7c69748eab9efb61af58982c0609a4d44e876db0a0fac40dafa6f70c1dc04. 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/JPW462556323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50077e74ae86089225e47a8e0a0449534a61ac76539688f570de8011fe6ac02b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPW462556325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45bc01aa460bd284f58f6a85748684d17e3c10d241b63e571d19d2802fec82c7. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/JPW462556326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92442bc09e6a860ae40521d891c166990191713c9f57a1ad8bbef2ce37f3bc59. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/JPW462556327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664099bc46ee5c95fcdf8f2f438e9e9aee4e1a54b046118df3ca51d0cca618b4. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:16:11Z), 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/JPW462557061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca08a9b341b71df08a6682b3b33fb4333ea930d182569d6e4fe5502575b73a4b. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:02:29Z), 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/JPW462557062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe55b584f596cb7c66bdf81167ec8c07c038da930e15bb4340e45c72dc19dec3. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:30:57Z), 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/JPW462557063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867ad9620c26ad7443b049c5888e95e2642d16e49ec2d5a3b8e1ba4bdc9c901b. 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/JPW462557064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a51f2b633ea4fe8ec797eab2d8c9703ab8119b4a65807209577c41106c59e0. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPW462557065.