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 0xcdf8ce0452bebf5d99daf28550770139a1f3e89bc65c6eef6c5e6cabc81e9041. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c6b0e1e3-a4c8-470a-8350-502cb67e35aa.json and https://artists.proofprofile.net/proofs/artist/c6b0e1e3-a4c8-470a-8350-502cb67e35aa.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 0xa15c431f431cc1b8f1ad22a14284275cb86e13a6563f10531654db89450c9fcb. 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/QM6DC1569194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e5d96258c667935a9b33337c2f4c5395471a7d35ae7ccbdac10e55bceaf4ba. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QM6DC1569197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66334be8ad01555ec00bdc5c0d19fd0ba69eacd8de24c7c9438d0f248636ae5e. 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/QM6DC1569192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e5d96258c667935a9b33337c2f4c5395471a7d35ae7ccbdac10e55bceaf4ba. 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/QM6DC1569197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd301433c615b3ff3c3decf26d5f16b29752dc8400a96611325632d1303fc7da. 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/QM6DC1569221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0adf270d8353f9ea726489cf36bb11215298cb3dd0cf69e63ac8d6ec09b6166. 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/QM6DC1569222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73473e3713b11ad1f7da841220944a511adbfb2ced4fa6287bff5ec85b0f917c. 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/QM6DC1569224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf133b7676ade99628ce66192d4401e0fadefdce0f8731e43149d77915c0371c9. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:40:17Z), 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/QM6DC1569225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94068e49b4fcbb53d92fd08c22b73b085dd25b5ce6bc093e4adc3506f2e04e91. 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/QM6DC1569226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440e0a0442743989e5fa99286104f3f74dca94da43f1cc48b3d6033c694e8c18. 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/QM6DC1569230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b0b9a42b1be81750cb88940e3518930850b54fcb63dc94a030353a39d66e42. 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/QM6DC1569231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd301433c615b3ff3c3decf26d5f16b29752dc8400a96611325632d1303fc7da. 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/QM6DC1569221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0adf270d8353f9ea726489cf36bb11215298cb3dd0cf69e63ac8d6ec09b6166. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QM6DC1569222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73473e3713b11ad1f7da841220944a511adbfb2ced4fa6287bff5ec85b0f917c. 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/QM6DC1569224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94068e49b4fcbb53d92fd08c22b73b085dd25b5ce6bc093e4adc3506f2e04e91. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:44:09Z), 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/QM6DC1569226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51072bac9843768492b6a20f26d62f57a1fff34ec06a660ab7b4db572f8dd7a4. 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/QM6DC1569269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b03fb74bf6a4e3befa6a2296bf955e7a87880fc55af076f18d53816d1ececf. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QM6DC1569276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f25173b457eb859329cbaba4c2c214629a8b7bbd891771105e768ad0c362d4. 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/QM6DC1569204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9b6789e770f7638187f63037696430a4d0c024684b38bed5cbcce70c785402. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QM6DC1569205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca966ab9693df53af46a9fd56ae3d72e58019f524136020d39cba1cb97e2d86. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:07:36Z), 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/QM6DC1569206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5007645e994af3ab26d74d5bea62f39ca4732c0bdba528203fdc7f9bff1b95c0. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:58:23Z), 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/QM6DC1569207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6083c65e5af52dca4ab1a21673cf0a1c5934630e4680f9afe164ccdc209b0ed. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:43:42Z), 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/QM6DC1569210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a65605ec1c6d4dca43a69124f98cdd1655c92fa49fd20ccc8fa62d932ea5580. 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/QM6DC1569213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe162f6511a5520c3b12a709d45cd7c5bdbcca0c7e86393f5a020a531ada1030a. 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/QM6DC1569214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c62543c0e93f185af808f12b3006769bab20bd4254433cff7e1b2459f13d88. 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/QM6DC1569215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51072bac9843768492b6a20f26d62f57a1fff34ec06a660ab7b4db572f8dd7a4. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:08:50Z), 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/QM6DC1569269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2dd27bf6f54a58c94439f19fcebdf88a3ff36fb36d35dc325e03d67210bb240. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:04:33Z), 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/QM6DC1569278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e3c2eb1ecd547ef84ce7201819c189a62236808782f9514bc28a250dc39607. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QM6DC1569282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bda320a741635764a86a0bf4ce3a5515c30f885046502db690ce782ad717a5c. 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/QM6DC1538629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8ac95ab44fe4b9c6cfab73e13263a312ff138d538e2763dba3022adbcd8288. 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/QM6DC1538626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bda320a741635764a86a0bf4ce3a5515c30f885046502db690ce782ad717a5c. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/QM6DC1538629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad0e2136ec2156b85daac6dcd55e985bb3e0aa215301db0ee2af9d8b09a35ba. 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/QM6DC1538632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8ac95ab44fe4b9c6cfab73e13263a312ff138d538e2763dba3022adbcd8288. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:43:28Z), 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/QM6DC1538626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fcce0c5bb84b081a068f026cae45d0c20d0dcec14bf904e5fb2cd279760b8c. 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/QM6DC1538628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ff9ef70eeb332e51fd23dea947e7d3f733ccc078a8c3bf16f21a8989e9df78. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QM6DC1745402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdab46c7c6530efebe90399c2b4ddf453edd05c2b7e9ece0557875bd51af8b13. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/QM6DC1745410.