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 0xe1ba192729cdedbf8fb4e7f1e0034b82ed4b2e5a43157b7225f4c51893b8abcd. 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/ddd49aeb-d827-4139-9097-7879397b9c16.json and https://artists.proofprofile.net/proofs/artist/ddd49aeb-d827-4139-9097-7879397b9c16.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 0x462739e91d91766a109931274b206e1635e61a010612246c9496a9d6aff19f19. 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/QZHNC2192238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0866516f6f3da8017644a00510f4a28b2f31ba370a0df271b12a814ea85f64. 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/QZFZ62251683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcfccb7ee6138832dd1408d9a94569a55ee25df5f1cfe5ae13a2ce12805881ff. 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/QZHN52288451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00cfd1f3fe5174a27bdeabb654691211124de612692fa88687e733095302e00. 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/QZHN52288452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60883b44dc23897c520d423870598d9e7549a337269cc1af9960f6517b663d4. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:42:43Z), 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/QZHN52288453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe49bab71d8028f81788d0e985793433ef1c9fd350da9e2ea16a20dc6119dc8f. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:38:00Z), 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/QZHN52288455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04fd75eaa9c2cabcc76b607bc133ffeaf616174b072330fabe1359e13f5a1efe. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/QZES52246057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae7a3ffb3aa79b17ae594770178ce31cbee51b088d712d9db8ba37dfb3d7ea9. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZHN52288456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b25d2426d7be56ebf0a664c8799ad9c085c7082837973b42dbf8d6e8eeb96a7. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZHN52288457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f7b5ba39637ece85b77f155758f38b5647c51eabb7c74123ddea869280c407. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZHN52288458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f0c51887a9f8c197cc2d77ed8b07c8ebef041cfde78664eda787a351f6ceab. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:09:12Z), 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/QZHN52288459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925e7a1a91e555988959ea43e4c0858ccdd0384e6e5de50dcd3b0e9c126b1c6a. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:40:53Z), 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/QMDA72315609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee9a9680e0cc979c442226e9eac86e7f8dbe3b017a91ecb59960eff324f1083. 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/QM6MZ2474385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4fb752bc01dcfd54009d9761d6bc2e5af0161347f21683bb33abda1e589e06c. 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/QM6N22467861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d7ce7179391ec86069e383c7d8663e6ee44ebbb007bf68a5c918553d048853. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QM6N22467858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1403111b823492980d1af98a2b1394b00b5f72b0569f9765572de39f992cfdc7. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/QM6N22467860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7067716d08f8f2357d88c81628615f10dbb3b814de8bd0435b665b83a00cc06d. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QM6N22467862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746c800a8c6fd492aab1e11b01a026f1c1e6bff80def5662893fda5bb3717fce. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QM6N22467863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514d69307a5ab23f9684de9f1575fe474d5790329f4b3c9b96bd597fa3609410. 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/QM6N22467864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee9a9680e0cc979c442226e9eac86e7f8dbe3b017a91ecb59960eff324f1083. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:28:37Z), 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/QM6MZ2474385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03b35edfbf08aa6c4bc26c950eea5e8c80f14080dbcf06a69664b7dbee78191. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QM6N22467866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b80e65faa6eb27ab39a60d71270da6be8dd1edc79a2dd3c80b1df818bbc29e. 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/QM6N22467867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36df86ae67696b7b46af4627bcbf45fa9678b6cb3bf00162139daa4dde0585d. 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/QM4TW2569999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9e4b20b99b78f66dc8fe16c0488795b7e126cc7c4ebf3cd18ebc76610608e3. 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/QM4TW2570000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107c0469d4843777b4a2ce1cf0c73a79bbd82ea836a875f060a1a9581b7cd811. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QM4TW2570001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb01a88faf7a1af410fc9efda9482b6d06d407d2cf73a11084e8f40bd7ac590b. 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/QMFME2548975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13647ef26c384459390e64bdc7b4f6bfff16b1c76d6f148d6b8d8a7d5ce1399. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USC4R2105608.