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 0xfbd597c21e099d51220d3590811cc7fd031702ce4daa4d5518f0a8510268863d. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0b06d87b-66b5-4481-ac95-29e8bd35c929.json and https://artists.proofprofile.net/proofs/artist/0b06d87b-66b5-4481-ac95-29e8bd35c929.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 0x294c6fc2f7da64aa7e424d5d59084933d43ac2ac6c953f2c1f324fde851c0450. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/PECR22301266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be41f761670c3ace4ba8d4ff0b9593f6a598ef03455be12f3261e01d098c8a5. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/PECR22301267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f0602cc4145e764df961698cb6649c8a38511fec0ea622c8c29b48d0d18031. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/PECR22301291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49feb8d917b5f9838976c80b80b00c5dcceba4bc3d5d992449a4e944190151f6. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/PECR22301293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5de8697c7f5dbc23028429c48ad7b8f7b6e4d197d51ef29465a4e0ff6546689. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/PECR22301299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258ba21169a7e99499f50c724b3b36a4553a5dd627898639b99818670830151d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/PECR22301300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7594c1f793a043bd3c12244b6fa20f691e832e880ce61066e1a6249ede1a9dae. 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/PECR22301302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac1da904b7bd680c6b6b64afcad36178b5ebe8a72cf57011c38891d297a084d. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/PECR22301305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15395c790a2b0aa43bff9a0d20ec787d7ee6c9b415ef537a6d1e28614490df8b. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/PECR22301306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026506a42d74e66ba983cf9716372cc637068f04296c0badb79a1e09f7f28933. 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/PECR22301307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168e32e257f6763ef48b57ebe8ffb5b426dd0e043336b21b2dbc540c457cd13a. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:23:16Z), 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/PECR22301308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1540a8e70cf5aa3da4840dd4854614a571e29f07beb5453cfc63aaec14780f8b. 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/PECR22301311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5dd6863f1bfadedc4d51fac56e5a6c9517c7784ef7e4b59af4bef42162a8d45. 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/PECR22301312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f2d8c31ec25c413f4d78a4e57a7eeccaa04ec861336bb37a4290e232b72131. 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/PECR22301314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9016726cf6b577a44d76f71a87e4eb3e35c8819bdb3beda7f79907682f09332. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/PECR22301288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619cce98897d305f7d4423633dffc7a0861f11e0226486908a2a1af999181876. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/PECR22301289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d5a8879183a8c05bf47d687f90dba4a26f66bdcd665da98e09dc63ddc6c498. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/PECR22301290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58231eccb2bfb919b651cd5a6e55ad7e4750e8a39554666fcc3ad98d5ee5c945. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/PECR22301295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616eb8c30504aa9f37683f054f60a6c973ac4106909eb5ede07ed9b383183757. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PECR22301426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa500aca07759bd22cc570a2b59a4d28f02abc72d6d6a215353563dac4060bbd4. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:01:19Z), 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/PECR22301529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb4a6b725efed88fb7b9ccc879fcf2e739ee6d53a369362c560f6a23dff5214. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/PECR22301527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3bb4a918ec694773aa177b68f4784f596fc26d7055b2406fc023d25fd13a64. 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/PECR22301528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291dfbdc2187bd6c04b519f53355de289a1b0d1de9ae74ef62ac82a66b177536. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/PECR22301511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef55eaf5d64cc86e93ba311c3b115285010e5424f21f9e87b37c07677809d514. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/PECR22301512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb75e7699f1119fb28869673284a01be4017f60f233c2a523e4cf02e71340714. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/PECR22301514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42b016bf07316a0a84b3fb7908ef2a4372fc6dbee3316d94dec525411ffccd0. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/PECR22301523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd126e94f22b71582db16cfa61274506f1de391edac17babecff2adf31027722. 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/PECR22301531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764ea52617a460f8eeae14a6d9e14ab196cc5b2a01ca225978fce54a6ded7f32. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/PECR22301530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2691e68a435cd5a97edf61123bd3ff92452de4a7072ea807fc28a256aa8c8f2d. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:11:21Z), 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/PECR22301533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30aee18bde3882d44caee56a67a81cf50f60b4360ef80ecbe62b1b41cc62c4c. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/PECR22401106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb9e8037265422d122b336f75312dab77a58a844a76c836cc3e35935fa0d9a8. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/PECR22401110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb23b1a3a5348c182007ea7e9edc8841e6ce2b1578f0ecdd1dd1f098fd749ac. 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/PECR22501112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34fe5dd7f5dc64b616297928101d2be1b57c1b086b8b7870ca9f46be1b58bca. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:03:30Z), 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/PECR22501238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4a312ec36ac56a43ccbcd055bc5b470e464b3babafe7e0e98bb649e586a91c. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/PECR22501606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d5d146e2390a355c5c3a2fc5bb3791dadfd977e92001f552973ab0ef46d841. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/PECR22501607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e422eee33af4c888aabcdf300b7d82fdaf31c6ac1d22f7045c108f54c8b6e9. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/PECR22501762.