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 0x23022ea842c1fb61b4769658426dcb666b2c89886658c55b5cdfce85e2981797. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/757f4142-d29f-4c60-9085-0ce970ab49b4.json and https://artists.proofprofile.net/proofs/artist/757f4142-d29f-4c60-9085-0ce970ab49b4.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 0xe3dd9a49c05e85a119c805208b3e5a2a8f09bfda9129cb35ad23faed67c56912. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZWFW2530653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731b522250e6c9c268fa28d118cf235f5c2774f33d058e2b55dc6f8338eeb622. 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/QZWFW2518303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a118e3eec8560388e29c7ca02c1c9079b19024b112a0780f89d139276b4cb8. 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/QZWFV2529583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e17cc2c257b92e9137cfb17a020fbd4b5f9a931cb5e4d925ac58ba2e90b537. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZWFW2528229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88500ace7eb1ebb10dfe94990e3a0713c87b6b61c44d4e357d9e7502312873bf. 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/QZWFW2522922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61b1b333251d3dab8578b34ff9b984d8423f9b0701553ff39ce81ab9a759fdd. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/QZWFV2529581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21ee44f65ec80c4794cae3f946bfef759a1ff8461a6e9eb0a47a51d53a9f323. 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/QZWFV2529585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d6d23d7b7667e2afb6c48a28518e06a0a3f6f426b488229ea5ec0e4869a0d6. 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/QZWFW2530620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b449b06755831d16156b675bbe6c26e824ee52ee3755907388fdefe769fc8e0. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/QZWFW2530621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05dc331be7dc172f26b5cc8c9eb957c5dc9664eb60e76cc08c520dd8b8f2865d. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:08:55Z), 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/QZWFW2530622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c3668e33317d513a6f291587a3592f8b1eb18e2cad77c5ac9fb61ec8f0b0a2. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZWFW2530625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a543fdf3e04320f3de43061f3dc810b86260b4132ecfe8df11416dc0901036. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZWFW2530626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558d695014985fce79f592a8ca33b49556068bed09205e22d69b6e7450f1bf33. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZWFW2530629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14849dd9b03c58658690b2818da82dddb054e555abf1e4c1e0b90e62a2db9b10. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:52:00Z), 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/QZWFW2530630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3022d68ac260ace1279dc671c2b48ea182a656162c6aad844ee742bd4de46d8. 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/QZWFW2530631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c9f353b38c99d49d3f3894503266144033cc15e333c73fcb2b3f69ba5bb8ad. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZWFW2522924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4a6f33422207d8a933e7f8de498c26c7f5e9ef8396d94ada881d4fec5d6487. 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/QZZ7R2549312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f940f9ad40487a87d75e16d06bdeb793a65c6bc12bec182dc8920820602b57. 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/QZZ7R2558097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b12a12feaf7210a39febb7584a1afb35649d039e1b53da38bddc359f8106650. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZZ7R2558099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd204064f0faece38ad3436e7ae3ce7361606bcfdf35a6fb0cbf83f77626d44fc. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:53:43Z), 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/QZZ7R2546195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e673b16337e4744710774d372d284fd0c5b73990af2aee16430f229cd6e9f7. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:11:17Z), 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/QZZ7R2546441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa496efbc582b80b5927a08ce46bebcc6959cc86cd5f8e8fbae6a04eef0b81f88. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:27:24Z), 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/QZZ7R2546473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3bf3157bc741824a551e4393af4ce00e7892bc1ece7cbd4f75d6d8f015b021. 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/QZZ7R2560204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33eee789ffb7089685fc3354b5c13e9636f4fc3460e0df02baa49eb0215de06. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:45:40Z), 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/QZZ7R2542664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b60cb8adaf819e0342934e42969765c37203c5a988b8939656a350f733f076. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:22:08Z), 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/QZZ7S2505089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca479552a82af94b6a17fc05562eb23d3c669c0505d08b649bb238c7b64db90. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZZ7S2505338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210b6d5bac47fc3716730c42def9537d5e91ea0509f0c09cb3d0c13777ad5d92. 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/QZZ7S2508531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf35b9f396b33f0a322762556fd1b17696c22e6acb82942155b858ab8c60bbf. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:49:28Z), 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/QZZ7S2505125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a2c726bfb19fceea5b65cd5ef3b784a378534f3eebffc2be4ba62aa2a6b74f. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:08:23Z), 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/QZZ7S2505084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf52fa247b5e5e2c263c3d11f35aa42d83bb9dc1e0b30bfdb4723d9d9e6bf206. 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/QZZ7S2505322.