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 0x5f72d0706ee4c9e9473076aff1befbbbcfa13a26dcb58eb1a8f0f78ae1eb519b. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d06b2033-fb3e-4fba-aeb0-3afb873222cd.json and https://artists.proofprofile.net/proofs/artist/d06b2033-fb3e-4fba-aeb0-3afb873222cd.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 0x81bf126afa74f06e98b4f3d7446b5b6ef0014515522f5414159ab711975ec891. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEPI82214392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b57d8342622c1d9e61ddd531bcff13f29eb05a242fca7919d43d0eaafb00ff. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEPI82214395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ebd77ccbce47775ef418118df5cdfbefd7729434695750b3fa4fa5074021af. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/DEPI82214393.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7d3d57bfc92d042e2a1888518558c0c78a82f79fa4aa972652903cb31d2363. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/DEPI82214394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe074d91fd53b0600c6abc2a636d8be8121e140ffbde6d1d9910e60abb121d1a6. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DEPI82214396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8a75d9a9b54a7829b946891ae9c5d91aa11e32f607635a54f94bfc95d722ca. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/DEPI82214397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2052757d5b7c56fc335cbce6a6adf20014c077d0507fcfddcacdf5ef613fca66. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/DEPI82214398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd7c9dd1011d808de97bbfb1202a935a699fa8524c7ce787e87b056041ef7ee. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/DEPI82214399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26f98103dda483fd8b3a2fda978b91d34892b4f8e33009bafcfe7d8d1327bb4. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/DEPI82214400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3f88784c11ce9146c5cab81d58c82880a8413b5359148238fb502536a9cfdc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEPI82113969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f6bd2c83eeba8b4c7cd7dbb2eb7414c3c2046a19d92669936b99a11cded60e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEPI82113970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7143e75fc077396ef980b95f6e954d19e8690fa0a49ad889b5ed72c5480f1e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEPI82113972.
Pontius Pilatus - Bringer of Death - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c149e7209bd7069947f56ecca056900ace04946d845cd25a467d74342048180. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEPI82113973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0845e704f2baf6ed40ed3364328e9cc9c442e11f13545313dc422b4418bdd7df. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEPI82113974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8cfc508780bdf01fc01e8cfaffbe921b4d38e1a8acbaa4855352730cb32413. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/DEPI82113971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3513be736c79ee03f3d85da88ee433dbf3b466accd093e65a4c04d4d1462c18. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEPI81904417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e6515a81f8bcd43beb3806e7a5ea00c6ac50c54dfe116f4052e1f9ec9a1ff9. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/DEPI81904421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b381ef37eb88ec711bcafe40b72ee195d7138eb04908dc335011963c2b06645. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEPI81904423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a1cbf9c34db7dc2e5ea0744d9cf30abb1738c965205b8bfef83165430e39d7. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/DEPI81904418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1301e3aea229ca789586905806bbf018d56c6961215b982b9b4b1cbce9a9a2ea. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/DEPI81904419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd186d99a1bd9c8d4f3739c9f7c0e4229430a34729989c652a2e58e78e192127. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEPI81904420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57e3707b8792478c3fccd23c7fd32acaba126b132d17a3ace2aa5b7bb630e90. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DEPI81904422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5960d2514271e46462bb7bd47ada9f3e7f892bd196a73f17cb5da32b4aac0b96. 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/DER371802401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35fc224ae27fcfaf7080f285ee466bcb6c3260a221617cf217d4b87e405ffff. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DER371802402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d2beb93edfdc46db5857a750f748c7ffc0d9a70bcf62291f391695e3d57c4c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DER371802404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ad903a462fddc506474d0ae75dbb4b9c84c1e2cdcb2037484a2fdb6ef3261e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DER371802405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9e415b2602ca168a81266cacaa22a6c5d7ce835f6dd41bad1b57775edd9c65. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DER371802406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a3cac21ae65acefc0317b9ddc266245de72c91b3df156ca354d75d83c1e655. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DER371802408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34a4458d2e784d266cd230f9c4462df856b680b42f8014ab57ca376eb03847b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DER371802409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f68900d60642261b40fc2474140b278b808f0f527f266dff419e23b768118d. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/DER371802403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2532e07a21e4fc08389d741b0f0f4d85773f6841830f12d61566a31d23d0a1d4. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DER371802407.