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 0x780ffcb737c061ae9293bc96ed6b88499a71df1adce493876585e786843ef46e. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b1f51f75-869d-4251-b32f-9b6f7f2d57bb.json and https://artists.proofprofile.net/proofs/artist/b1f51f75-869d-4251-b32f-9b6f7f2d57bb.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 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 0x20d82f9948a1dd7814a985a6959cfa8e0c9d723d6064102dc412b9db7b5443e1. 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/GBKQU1578114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c53c84eb52d0eb004c78a6516fba315de357b8e5f1b3bff16b25df6cb58bf97. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/GBKQU1578117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb037b60056ba550c30ccaea7b89051b5f5d42b50234e9e2fff0be59eba45b0b. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/GBKQU1578119.
Another Friday Night (Live at Parkvilla Theater, Nl, 2022)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b497f3069b3a50a29d95d79983958c2f93000aefd0333f9239053bb5295ef8e. 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/TCAHL2309953.
Rain Drops (Live at Parkvilla Theater, Nl, 2022)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ffa3306cf9091f48853b958603fa10468b91688ccd18ed87e3f5d8e7b21991. 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/TCAHL2310045.
The Reason Why (Live at Parkvilla Theater, Nl, 2022)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dbd9117a5b886d4a756111c5a4ead09811b8b399a67ed81bf4c04ab545a1d50. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/TCAHL2310185.
Visionary Sights (Live at Parkvilla Theater, Nl, 2022)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534b0baa1998007bfe42556217fdfd907d8514ac82d3cab388bf1ef102c47c12. 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/TCAHL2310214.
Grail and Time (Live at Parkvilla Theater, Nl, 2022)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadfde78178065fa171259700903fb5c4af69eb420392a6b1d0962e74172dca87. 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/TCAHL2310233.
Out of the Darkness (Live at Parkvilla Theater, Nl, 2022)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899d0836224bd4b584fc124257fc89d3a03c6bdcd6c914d2d85567bf9e309ffa. 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/TCAHL2310281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1cb08e8274c3675331dd86ed11be4d89bd28b396c3a85caf0e63f7a8649bf46. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/TCAGW2386192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ade533a4a658d006cb6a6949d1968d492f54765a0098c1388e9f6ead01ed4a. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/TCAGS2244806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6326122a74f59ed79b59fdda906b74585c4934edac10df22d66b49f3c9cdd52. 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/TCAGS2244811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6fdbf283ffd41b80e904d25c3c0ee6b4faa143ee24c6e378cdfb74d62de3038. 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/TCAGS2354777.
Messages from Afar: The Division and Illusion of Time
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619592a626db1237a33cf0107e4daaff3a651283bedf7c8ff97dfb82fdf24478. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/TCADS1833023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d21688151a01e2616e78950e03532341af5c7c0c0a3f7128da2332dc484c8fc. 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/TCADS1833025.
10th Anniversary Breaking Free Tour Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba273b153a05b66f02e0870787784ff9fffc234e2de914d0a3f5f721e95cfc6. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/USSFR1723801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddcacbb08916105521de665e0211ddb8392f489d078ce4a09686ebeba57042e7. 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/USSFR1723802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58fcb5da33fdeb9de2f760241cdb8f8c392a5d2838ec9b12d692666ba5c4ac7. 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/USSFR1723803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e451aa190eca5fab6cfbe6d977d351a5fad567113fdaaeb2e41a25ee89071bb. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USSFR1723804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02cdab37f800f6b9dfe032bd4c4684343be4221a552edcf794293c517fdd3d6b. 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/USSFR1723805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3f7538f14c25c256d52402ad4c36c727b0a92e72c154a9a50b25681c2ea9c4. 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/USSFR1723807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc4d16444c488a49914e2c5c8ab56114ec82f456b379d4b8ab460a54fe1e0d5. 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/USWB19902264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27bd2c0f440aef7c0ecc01e9e2a7efb226aae4e0672a9e4cef76c71df46b50b0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USCA19386735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417012a9fcc223912c82c65e313fb8e5cd77d01535e37f83f72f3cc51bc00fd1. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USSFR1723810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c79b70cdd749c29bf5d73ef027d2c80ecd8aee3186cec5cb22a6d4504f4d367. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USGA19649250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e007fb8b381b608f1358a188d00c583c855924db763437b7f318bf57caa034. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USVI29500033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1834ebaa9721ad8ecbbe19a48098e82940622be281d579e3a4afd976b33f476b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USGF19697508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea98e3bc870f71ecad21ea5661c571602770f2d10f8161eeb11f16cc457a2e1. 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/USSFR1723820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd60ebe0d859e2b100aecb2f581a4b276598db8cb0ddac6e1d0f394bea38e2a8. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/GBLV62015558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6dc4894f53697bfcf880906ece923943cc56fe3a447c00afd2683bf09df11d8. 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/GBLV62015560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47512b4618d57762c86691bd411debb0896728795cf9d89acbf52edfba8f2554. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/GBLV62015563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa55d124c60dc08de0d16008dd0d9ca60e67fbb419e414ffa2faae6dc883df13. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/GBLV62015565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eba65c8ce3e902585379d59c74f50491d15fe65b75df4d68b9ea217359a9a6b. 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/GBLV62015566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad3235750ee6d00c4254ac1392f3731e074026ff3ca917f37564b065a683aee. 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/GBLV62015567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3622ef497a047c118bf38b13ca977b7c8852dd94aad61e346f5e8c9731eb8823. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZES91920701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0168527ee909fd745bccb82a3405336b418f9022ce29a4ec6bdbaaaeb299ee26. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBLV61526267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9dc9b4e97e081085b628057b60d860f14ca42392470f9f5727921889c91560f. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/GBLV61526269.