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 0x70109dfb968d1d51a34fc09179f7895100c58d2a4cad64a0a181dacc36889680. 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/21afa98a-aa24-4cb3-9d24-ca75845cfcc2.json and https://artists.proofprofile.net/proofs/artist/21afa98a-aa24-4cb3-9d24-ca75845cfcc2.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 0x92ad29fa02037dff1b0328c64a047337eccef712f9c62d2adb4f88b18cdd1fb1. 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/DEND11121702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4584c01ab90dcbe631446318f928fe57e224c4af785f3450f7e52ee190f3c7. 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/DEND11121708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc376ea257c5d7a5ca5d9e681ec548b03ea027cd3ab5d735a5ca90bbc46e47b. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/DEND11121710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7fa916aec65bd7cf08d9a664ba12e63a1005ef9410d536ddd0d00e902c41147. 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/DEND11121712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df36a60e63c56172ffb02d3980dd20155cf312bdcb5a32b2b856639cd91d0f2. 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/DEND11121809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9418e2db8fac01540ce7f8b9e27324a5594f3180921314bff9a18fb906341302. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/DEND11121813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6f485421f9622fcf8cd5e750459f5b61f0594b204f9370f14ac2cb47baac27. 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/DEND11121903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4fd83a2717d3822199b97fd8bab05adf8ae7d739ced24ed28f146d218269f8. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/DEND11121914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1938431314efefecf045be7f414da116a3e618d43941a452077a543aff9e3da5. 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/DEND11125305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d6b2cc39791c70082c03d45de53d5a643086eda134b071eeda8030c3844dc4a. 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/DEND11125308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c7352f899d461d2eaffddfad77b9f9ea81375aed29d8e92f4252e5cf806777. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/DEND11125310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc8b63e27e00ea53a4286f41e3cb7e5b66017994de4db36a4d00cb2012f0c35. 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/DEND11623801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc41cefb43dce6f0d6f0b099bd2eeca4781035510bf78e58fa4b2bec34a5445e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:01:52Z), 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/DEND11623803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab92ea400a575c6e1ed78ab1c1ae9dec8cdec8aeaf06da92b2a84ebe74d0bf4. 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/DEND11623804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb148057df45aa26feee68810ce8cd3b052e25b5fc554707f4321ae453f53c8b. 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/DEND12027301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed5cae26c14fd06375111ea87747b2ee24685764b93d964a8f224043da91773. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/DEND12027302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f3063b7d4a6198d0c6343a4e9b290760a7099fbf08f20a7c397e8eef33afd8. 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/DEND12027303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b504197a0b88d814ac0f443437035e56a50003fda9e68c2ae415b20ddf841b. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:10:26Z), 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/DEND12027305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb7f2a587c814bbb1631a1d849028900a2cfcc42a44c54bbdab8353443b9d91. 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/DEND12027313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950ceffe988cbb53b485244489f22e2fde94309f926165192802c403377e223f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:57:27Z), 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/DEND12443203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2624a168ce9c92421ddf9e3f1fc1736e4077e92d5943022bc31bd2faf9c71773. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/DEND12443201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd793191142461fa1c96567959e72d5cfe090936a14e52f1a1e2f9dd412115c72. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DEND12443202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950ceffe988cbb53b485244489f22e2fde94309f926165192802c403377e223f. 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/DEND12443203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99187b4d7f32c53d3b47fe37390e41db4141f4a11b86a654ed81aa6090f7b98e. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:26:32Z), 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/DEND12443205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ebb5a6f39f15a49e3cbb7fa8cefce179841331aa6c40ef2c88ce43d98c5eec5. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEND12443206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb473760149fbd2d087094a47082b9e9364ccc4a28738b1c809eee13c98420f3. 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/DEND12443207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4c7087809990ba8b3e208943eee8db1076f6ab025694501419b3ff2b8c1660. 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/DEND12443209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f9c911300ea9c1cf9ef436dc4f9f339e0a4ad4e2cda30b32fd2e53b5fd509d. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/DEND12443210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea77ee98feeea5251d3fbf06f1c2915eb7f17977ec25aeb62c683a6dd812295. 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/DEND12443211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8610de9e644304459f5d5e35563e05fd7a1be0e065f5e31f76fd32936d33847e. Chain 2 (Bitcoin): anchored in block 957616 (2026-07-11T21:52:36Z), 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/DEND12443212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af693ccfb41478fbefc68e20633544bdbf725f7d31d6298a1e34a858c3182c9. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/DEND12443213.