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 0x0c6599f509d7995ff0dd945c941cb39d0eb74ff04f589155bf7ca7f3c9eca473. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/968a7109-8cfd-4a70-894f-4a642908d0d5.json and https://artists.proofprofile.net/proofs/artist/968a7109-8cfd-4a70-894f-4a642908d0d5.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 0xa2d0eecc085f8d706134d2711fd51e01bf43af4e0dae723003b5d508c4df0d2a. 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/FRX281507621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4af0b2baa0d706a1cc37de3f3298132f35cf8a826b7c0b90224ec07bcbafd6. 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/FRX281507627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35796178bea64b64f5f23073402aa49b71a8c100bd5078897f217c30274c0743. 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/FRX281507628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946a7c020a34b477aba79d4542b05a045305f75b68aae1fd65a6f1bf6683b9a8. 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/FRX281507629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0652e05e3bc111a5fd32e3b41d19d1f20abfbffb27786576f44bb4e9cd5db44b. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/DEVF41600060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dede2e6a0f9b7a53e6a537c81b404a322fec58a3d69a470354e4b4b792b3569. 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/DEVF41600062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930177b68d01294b32a34cefc91d1e0ad73a6c8a5658d3f1362587467748ca3b. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T16:04:10Z), 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/QMFME1972083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1954c65e1fbb5c66f8eeaebb4f88ddbee05f1173941c7dc2486db9507e95636. 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/QMFME1972103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c7fd24adaba513488ac0d03ec6095a5a27bc5387e9bdc5e271a63f93a4d0a3. 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/QMFME1972104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4468f577a6f89ad15fbb385e647ac892191d636c05c96444e8e80c052bbc6ac. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:43:25Z), 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/QMFME1972106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45fb491fc82eea9c135fe81d426c6e9656af5b0c86389358b3795b90cee8d97e. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QMFME1972108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6345287cc2fc90846a5985a3fa2716ea3faab9ea14a5eeaf6867d37220d49437. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QMFME1972111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c21679d22a449bba1ae9436b2e0c543988fbe0c0ac86bfb39d52fecc617da7e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:05:21Z), 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/DEE352112531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48d28bac8b9fb4603ee55d7a8bafd919a90f84518a9817cdc4999743cdc3853. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/DELK22400123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd84c011ff6260b714682c8c6423d312dbd8623a3688636709be6286124f3580. 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/DELK22400125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6603001a4af8fd228f5467731208dc9d5827a5f64892e079145c24b48bd4f4. 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/DELK22400122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6603001a4af8fd228f5467731208dc9d5827a5f64892e079145c24b48bd4f4. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:08:40Z), 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/DELK22400122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48d28bac8b9fb4603ee55d7a8bafd919a90f84518a9817cdc4999743cdc3853. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/DELK22400123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2dc50dc6e3519110c4a5420c4d0ce0ba75f5bf84807322f76b649bc2cea094. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:02:15Z), 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/DELK22400124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd84c011ff6260b714682c8c6423d312dbd8623a3688636709be6286124f3580. 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/DELK22400125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dfa8e285871f1e425ada2c70ff34a08381c7a8377fc9e8f25df7f5499c7a006. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/DELK22400126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0104b69574007f35e2a07ac5c326d35a50bd68c38f3a1fea3fb203218db94d82. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/DELK22400127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1758d0fb0ee3594807f21c47e4766309d1a5d8b443bcbef27f2c7c11ddc16c31. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/DELK22400128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9709eb48c30c332809e521b39a54be15a5c119f522d44630c149b23deb504a12. 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/DELK22400129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7887b0608cd934b65eccf992425993d98f4e486f68d200e07937a9c9c9d4757d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DELK22400130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55dd9f7f16bd15d41a26805c0b9c88a54f9cfca68754958403b439968f882585. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DELK22400131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8b8c5af2a067afd57ed90b60c1226dca199b1ca28b0f9c2e1ca2a2ba740d00. 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/DELK22400132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2dc50dc6e3519110c4a5420c4d0ce0ba75f5bf84807322f76b649bc2cea094. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DELK22400124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dfa8e285871f1e425ada2c70ff34a08381c7a8377fc9e8f25df7f5499c7a006. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/DELK22400126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0104b69574007f35e2a07ac5c326d35a50bd68c38f3a1fea3fb203218db94d82. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:58:02Z), 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/DELK22400127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9709eb48c30c332809e521b39a54be15a5c119f522d44630c149b23deb504a12. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DELK22400129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7887b0608cd934b65eccf992425993d98f4e486f68d200e07937a9c9c9d4757d. 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/DELK22400130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55dd9f7f16bd15d41a26805c0b9c88a54f9cfca68754958403b439968f882585. 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/DELK22400131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e4f2229bc1bcd53a3fb285e578fb76b128f271a54cf4614b8c0d4a003f5ec1. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/DELK22400133.