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 0x5e192fe6bf5617b6145043a754f8a6d962ccc53649eb0c904af43a4142699e62. 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/73207184-9eb3-40d4-8da7-4300113d52f6.json and https://artists.proofprofile.net/proofs/artist/73207184-9eb3-40d4-8da7-4300113d52f6.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 0xa6e3ef57a6a227476335d16f1f063de462c51dcb8bd2b7d4da170d06de867b12. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/BXDD11700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55a37cb1095fef1dfbb16be74ae6ad2197d93a34e76252ff67e323c7d13f801. 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/BXDD11700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ab6b2f3f556e3bc1580ca2fd2383e5d2b2fa0002be9f8bb2187bdf36dfb0ff. 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/BXDD11700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b8cafa2dc6bd2fa8e3bd4b70053f87f9ba17498e4fecfcc45dd6cf51062fd4. 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/BXDD12100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4787da5fd94bf98b38e03998d5ec215652512f67de19de6183b1c8d1ac0816a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:11:26Z), 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/BXDD12100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e23279a58ffcec5680202116f0670a6f8e9f369f79d22452736b06b6f710b1. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/BXDD12100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb251fba8d12c0d4151214be83624bef82eaaf281880853b8a41517d1ef8ddaa1. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/BXDD12100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c12dc49763f00cd47ebdd7e349892c357b48032a5574c763424a371afaef0d. 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/BXDD12100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689ba77ff7af31441fab95a0e7ae408d5871098a4ff8f010071dec3d912d130f. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/BXDD12100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5d36acdbd7c476e6f45e556d6af8b27afd6f05196fe4cd857e17b164854b71. 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/BXDD12100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e195c98506b0089a5b6ec887b4b094a383d6a0bc76c3e7fe32757219bc6d7f9. 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/BXDD12100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc44331e77ff9c27e26307e7c184037c17e2cb7274c579e2414db9c98b09306. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BXDD12200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34368554462c8d1ded681f9e236cd586a0ca96bb398a992a714acec63266dae. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/BXDD12200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288aca4a1952079f686f0be5b026abeb1c35fc73c9bcc0893321b6a9868556ea. 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/BXDD12200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14dd53df1f4fe40706ac91d9221b9130ec0b02f2bbec2581af98c64791195bd2. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/BXDD12100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602a47e90f75e65b97760e2959ecad3e95e472d492b558e86b4f827f0eb744bb. 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/BXDD12200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9fbc40c0f9afb2c10be10dd570c6064e2efa7f02695f6fbc43b50d225acf83b. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/BXDD12200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc153161367cfad7a5e87473f1f671cea8fd9c9b2602aea29871395c0376f5e0c. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/BXDD12200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e72f7b2722e10e4667faa47c8837bf7d8f601368073e16bd6667d81cb01d24. 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/BXDD12200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cfb47f3e1fe35e5dd083cae1628e2d53f079e6b7431bb3a010a09f618abde30. 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/BXDD12200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311043de365bf831debc98d3dd7ddbfcac4810fc8b41ba2faeb0da5b4821e2f5. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:47:41Z), 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/BXDD12300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f728a262b85e6e8b7520a0857c7832de8e31a491e993772d124048d07f1c40. 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/BXDD12300059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2080dbd98b94685a0f208b47fb8c9d1c55efd64a01f11502688d413de3dad80. 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/BXDD12300061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b83a4b1a0e47b9c649b19002ff5bc63ae956f250e00fbc2fda129be938eb980. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BXDD12300064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8ffceab4719349a4a9948ca64a418b68bafbe90dbd3df8bd5fca5e402e2fdd. 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/BXDD12400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda80bad87de70931878b07da20d3887e0308d842f09894a33dfefa568278109. 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/BXDD12400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05589d9c10225953357f1ec4e068f335a8900b34593783646ad519483b277017. 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/BXDD12200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c87144bb663693e2680013526c3950e20e48f0b99f57fd23858fad5c76c4de2. 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/BXDD12400007.