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 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 0x9215f1f0b7d28a0dcdc3ca4682a0db43f8bc17c2cbd72d1a2273b37387ed7fdf. 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/1a442598-583d-42eb-b974-bf9db3173dd3.json and https://artists.proofprofile.net/proofs/artist/1a442598-583d-42eb-b974-bf9db3173dd3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Out of Our Heads: The Music of Kooman & Dimond (Original Cast Recording)
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 0x039ef76d086547d89ba473bdabe064100bf50ba274022ca3ade6a4ae6ad7fcb7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMWU81100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3836a1ac6f9a102e7b720b699aede64bdf0e4f4669319815d58fe292e1808ed0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMWU81100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3cbf0213c6d93123c0744a563f9048032f82f286a7b8573b4c7f5ac6cf62729. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMWU81100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe580831888e602036917c7bb83aa40df72e879797bd1645dbeb950cce18fd4fd. 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/QMWU81100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ac2d7e3a758eb10055226f2b48ee960b1fa46c9d14cf955257226abe81e61e. 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/QMWU81100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805f42eef99fcb68470b9546a3ea1361de07635a82d344a544dea983b77c3caa. 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/QMWU81100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a19e5522dfea846e8daefdab4459f181354106e939f938b3301e1f5cc14db45. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMWU81100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ab6771a7016b4ebc677b1f655f503cf8e86cfcf1e5ffc0077e19e9f6ea500e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMWU81100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc8d5433d62220f200660b033670aae746e564ce865471fa204ffd91b11aa58. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMWU81100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f0e9879908b57764c95e553dad91a8d43640369585d5789541364143c28bc5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMWU81100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362473cc9bfd85fd0c4d1256019358404a654de83d71c7d71d61742c897204da. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMWU81100011.
The Book of Heroes (feat. Haven Burton, Tim Jerome & Company)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f2bac45b4911dc33309a400ed0e7cd570872650690fb4134fd73ee3f67a1c6. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QMWU81700001.
What Would a Hero Do (feat. Haven Burton)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11aad40afbdcdb2226fbfc648bcb6a1e6d83b3239e9340c7ebda86ac22c2578e. 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/QMWU81700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ecb5de8523b4f80b5d9004efadab6f58d8b76bbd98ebe4d4a021787af40cda. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QMWU81700006.
He's the Man (feat. Greg Hildreth & Haven Burton)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa550fff3da096d88fe51b6e954107d8bf911b8fadb78994196665c4b2cba94. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/QMWU81700009.
The Heights of Mt. Olympus (feat. Sam Edgerly & Haven Burton)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d477f4c9964ad5e9216d2351a3d6b09895e96ca9263a586d532aa2310c41a61. 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/QMWU81700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22d5ebc32bb23660a37758d3d49c82c9cdfd237dc36b078f9e96bff12b03672. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/QMEU31913436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d965f420a3b158846279eb66afcbca49a81295a2533ddd177eae638dedff9e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZFZ72369061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4be00bec77e8c994a6f36670ceb37a839fd06785c7a0ce9d13866bbaeba0cf4. 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/QZZ7T2480188.
Romantics Anonymous (Live Cast Recording)
Not Like Charlie / She Isn't Sam (from THE BREAK)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd6b93a60534c8fbadf1ee03279b83017a1e863232a391a911fa510241fd5c6. 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/QZTAU2519509.