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 0xafdfb7642a69d075e204b657dd76c2a0f6250505790b93fda5819481f46fc287. 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/f8dd625f-2f7d-4196-aa84-36e3b35f87f8.json and https://artists.proofprofile.net/proofs/artist/f8dd625f-2f7d-4196-aa84-36e3b35f87f8.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 0xf4c22739a5db510b581c1e059141fc7bb5f50cd98f71b8981220b6ddaad8dad9. 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/TCAJK2513082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1be2b45d00381b955feb7c70ec1bbd7b39c8125ef0c21d0fa0c6e705778bdda. 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/TCAJL2507549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0de1fefafe87ad6e402e1ee7af250304320d94c5cca9ec66025c81179c7e314. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/TCAJL2533235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbe6aa6f25b37d4799392ec5c1e708345f40b59334b80302b63e3a5f30fe412. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T03:26:09Z), 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/TCAJL2561669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253bf5ca6d0d4974f738c45e691fd54fb8329fda684e0c70cc6ed7fcbcef4d7b. 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/TCAJQ2510246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29f681dab8861b31154892136d1328f98d5f1c92cc23ff0bd018ebe8d5d1206. 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/TCAJP2510123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e86f68cc7767bdbb9ab82dc4756ad6e4e3288f2dd9eb30c9970e6438f40da1b. 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/TCAJP2509853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9ceeebf1e4aedc3ec6aaeb3e3aa65d56292c06f70bacac2cd7e17249b3c05b. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/TCAJP2509873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7907733a4fa26895d6a8b88cdde82904a1a519720d07d6eaad91d9b29958918. 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/TCAJP2509881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43d34b6364d63322241ae9713dd78fe3f39edd73f7235b1883899a51f108845. 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/TCAJP2509899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0dea48ff433d4eb33dd4b512d9b6065020266ec5180ef484a9293a24815ebd. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCAJP2509917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1567632d1d0c10906a54a214ed9d8f31c87d48a2c709fe96f6dcca184779faf. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/TCAJP2509926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefebb1776f50f517af7ec792f7ee48ab621cc351424061adc3d94db449a989b6. 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/TCAJP2570588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2923153b4f3edfeeff5ab7579564168f5c2a552492ac68f41fc815778399b72d. 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/TCAJP2570659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46bd9307cca071b7b1f4768686314c24dd3c1257e859e21934a4f68e672e88d. 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/TCAJP2570674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b15b1f2386d2f60cedcd2155077a592ebc1444f84e837b057fb738fc0ce5f3. 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/TCAJP2570715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157805bb44b59cc0ed7ebd79b7d470206dad5578ed348a0e0048e3526f6312e3. 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/TCAJT2560780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61fced60b162e9143ebe2f107fa3e7c3b14b014a1992c1671ab9a49b5ec493d. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:41:19Z), 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/TCAJT2560960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f3f8f4bb0773fb84d2a971c2a257b4eed93123cb22efb99acc1b606acee155. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAJT2560877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8daee11c2e4df5c8da2fdccf43cd5f6d4a9140e36a927335130ccd9fe19265ba. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:45:46Z), 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/TCAJU2560828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992b437d8330c6cfdd427f2d76ec2dbf43dbeafca9d25c5b39be494529c365ac. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:21:43Z), 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/TCAJX2514500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34676def23a1bcd2670b5e18ca9eefc9abc6e2ec2eb5f0c2eef283bd08cb059. 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/TCAJW2514628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304e755406823d7efb53c4573ed4250808c2773816757cfea5b7866c78c62dc9. 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/TCAJW2515456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e4cec4c26c03baf4b7a08930162d16889f55a24be43826096f84690287bc60. 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/TCAJX2515619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc511b89c8b64b72bbca6142f567d0c26ad056c5df4a98083959b533c07487c63. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/TCAJW2588354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91434ce4e0b80daadd2b7e891963e231d1a47743dc8f745aa40f76dd97ce0fe5. 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/TCAJW2597797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2780a16fb7393a7d1e87b0e25d9f555cb84d349874bf3555ace595dda88fd807. 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/TCAJW2597438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a4f57a95dc2e36d4ff54164f8dccfcfe63a9a055e9830b0d0d56094db3dde5. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TCAJW2597680.