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 0x62dd274116cc3db475ed72a0dd3f257a462f786f3f3a70604ddfffdc0e1da5b3. 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/7de6ce9c-2df4-4c16-bfe6-d78e6a00b62c.json and https://artists.proofprofile.net/proofs/artist/7de6ce9c-2df4-4c16-bfe6-d78e6a00b62c.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 0x0d6fd787111cf41cc57c08f081db3ad1c10da2f1f9de4be1c88b17f6a5b589b5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USDY42088667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca646540ae57246854f61529af07d00014a8a138214446ee127e7ddfef0ca7d. 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/ART3J2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca646540ae57246854f61529af07d00014a8a138214446ee127e7ddfef0ca7d. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:52:55Z), 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/ART3J2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99c43509533f964862cfe02b8ed323a4b285519d03b9dc8e5895e0581945578. 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/USL4R2157554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda170d64e9f299d72677870103bd1511943b8ced4b87d670101157298deb40ce. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/USL4R2157555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8bc94c9197af53abe39a7a8649ffdc6050c15b9d04d4b2fe28bc16e9e27737. 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/USL4R2157556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ddc78fd23681e67c5346612858003860846b7c1dd64c101ee9730877898a19. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ART3J2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c18135590c480c92b96abfb224374e7412e04c46cebcd1c8cc2e5a873ad5e27. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/ART3J2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c18135590c480c92b96abfb224374e7412e04c46cebcd1c8cc2e5a873ad5e27. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/ART3J2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbff0babc7f40514680624233ba53c236170060b26cd6f99e465e80b547c7b1e. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/ART3J2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d269b112bbbc6df9e66b9452fc9a9744c84a60042e2fb24fdaec71b00c90cc. 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/ART3J2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7382b59f07cd63aabbea30ece039e779f4d1afeee025bee7a27e42c228a69eb. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/ART3J2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbff0babc7f40514680624233ba53c236170060b26cd6f99e465e80b547c7b1e. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:28:42Z), 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/ART3J2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d269b112bbbc6df9e66b9452fc9a9744c84a60042e2fb24fdaec71b00c90cc. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/ART3J2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7382b59f07cd63aabbea30ece039e779f4d1afeee025bee7a27e42c228a69eb. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:07:03Z), 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/ART3J2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1720fb1fee8a260259e3b28a0f06565d8c0c9e014d9655ebb7fdf2ab015ee4e. 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/ART3J2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed57e7992390365b2f531a687f046d1a9a4ae0890e67c15604195e47310c171e. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/ART3J2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1720fb1fee8a260259e3b28a0f06565d8c0c9e014d9655ebb7fdf2ab015ee4e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ART3J2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed57e7992390365b2f531a687f046d1a9a4ae0890e67c15604195e47310c171e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ART3J2400010.
El Color De Tus Ojos / Lluvia, Dile Que La Quiero
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7ddc0ec03e3835b402b21f3ad27c98ce0bc3be554495409abc3baaf8fdf9b5. 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/ART3J2400014.