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 0x9af83d522f4628b6ab20062a54169f37043ef70097e1c52313ad6a23bdf157de. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/acd27b9e-e99e-4af9-857e-c2def3536670.json and https://artists.proofprofile.net/proofs/artist/acd27b9e-e99e-4af9-857e-c2def3536670.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 0xb845ef5e87d189ad8fcef85df7f83a2469a9cdf57d9117e842874ea98253425c. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/QZPLR2219036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea46770e72b4c1e4a2b0f80905549381215d25a08931a7dd84cb8bff6af6620a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZTAW2335742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322eb4d70508293be8ec6b9bdaac5ec81b07a25ac8ddcacdcda7dd927e9873bc. 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/QZWFK2352464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56930384466e6dc2ac8962b544adfa40f88d7330fb8f2c486bb8238b76bf0710. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:00:42Z), 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/QZWFK2352465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf062cb5d377b5f3fd1e64eff8697a085c215d843663810dbf188e9c2c72ae360. 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/QZWFK2352466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7534362c2e7709bafcd0fe81a3c0b6bf2be51d0082e954b66086a51d729c1486. 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/QZWFK2352467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b8a2fcc073a57f628442a2f51483c6bf9104a12614819a954de9292d0d5a61. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QZWFK2352468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e04dba218df13517bb0f62faa5dc1301d0da57dcdcf98785ebaf54aa88f8a9. 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/QZWFK2352469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a76eef79a85ee18b70ebc7169a4e8916c3c2ed4711b89045bf13a69bf65a69f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZWFK2352470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe559feec696e6a5378856c02018bdf5a2277761608dabd96284da06df4d6b0a. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:47:45Z), 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/QZWFK2352472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa4d95b033a1bd2587d842b9f366b842de6db5a06b2af0bbe940bc69cad1efc. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZWFK2352473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc8fc5a738b9f5f9ffea98e87c1b11da4a3908468a038f3da6eb9ddb235d3de. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:59:41Z), 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/QZWFK2352474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a90f216f36ba557374ec46504d13648ddd9d6ccb4e62cd20849f1cebb2a483. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZTAU2475828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3b7c4281c615a06ea9fd09b71370f8d881930e8b91ad20368a0cda051337b7. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:05:21Z), 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/QZTAU2475829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fadec1e56a00900567e2571f57a4cda7a92a47b97fafa6b536535b9914ec2ea. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:37:32Z), 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/QZTAU2475830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244b4602a7d61fda219d492cdbb99018355e666810abb3846737cedbbd4e1d1a. 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/QZTAU2475831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a9c3e8bb122ac366c27a00438250624ea5441b89d84d2fd665b86e63500b13. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:22:41Z), 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/QZTAU2475832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba077a091ef20233c17407f878e926041f333e4ec7855ae7ae6f7dbb82301c5c. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:05:30Z), 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/QZTAU2475833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe581b56107bc5bc1833e9308534976c1c012cefe6b6ee8ee4df9a553811436. 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/QZTAU2475834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f738100b94f60ba20f7fdbad7a18f7df0310efcae01ee4711f3459eb348a901. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T14:47:55Z), 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/QZTAU2475836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd656cd31fe4e0c95cb67e8f4076a722e4c35c0e24856c264105fec37ac1be06f. 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/QZTAU2475837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6f98bdac51c60b11e47342e77e4eadc798f5e1ec2adf4fb7435da733f9ef4b. 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/QZTAU2475838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02f8d8d83ecabc34430750159cf04d4c159c1e995c9aa818b51c4a1f7eb2d6d. 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/QZTAU2475839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4bd1df454a9db4c464cd7865b39b72f9eb86d52a30319098a7254906a623f0f. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:18:21Z), 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/QZTAU2475840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625c1b1e67cb48c5880fca0f001ee63399f2b4b7e09da97bcbb1b3dd77f88289. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T14:59:59Z), 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/QZTAU2475841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b2d3b286c448306d6860b92aafb30a577ff7381fb239239d053b02344cacc9. 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/QZTAU2475842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c0cdc6f8b88b9b9c99e611b586f33d6586908f5a041c4b0c69225f5199c962. 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/QZTAU2475843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3829829fe5ca152396fe73b74c8bb1fcf5ec9a8907cb16d1964ce0f33c172c8d. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:39:37Z), 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/QZTAU2475844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9218557c417e35f9225167b4021e52f519560e5e92b74c66879e5fea43aed750. 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/QZTAU2475845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7aeb764b93055f63564e5c1e21f0f77603cc71703f8892fd01e2c06d1034b54. 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/QZTAU2475846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c5b0ffb6912e03fe3e843b9b347237386092c4b6721ddab2e0cf5e5f4ad275. 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/QZTAU2475848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cfb155379f3f8b75e750ce6c5a40ac86bf38d86185c96cd6cbc2b3d73a72888. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:03:59Z), 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/QZTAU2475849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6d062e3d09982eb0cf1d291f5c55ac743660bd526016b5b27ae9dd7ccce5cd. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZZ782413797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e7e9901a6fcd43c2dd44c019ff4050e102318e749217c697fe2f4218e759c4. 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/QZMEN2583787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea86560fd44445d008a71b17826819e660e19455bffd075da6c206b5599aced. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZMEN2583793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1f60d5ab0ff99a0a2545815adcf51c1e859ff65852185d7f337ccb6a866c4a. 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/QZMEN2583796.