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 0x3275df4e9279abdf727310c2330f07238211524b5b64f47c391cab043848edda. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f4f81654-63ea-48e0-aae0-bf8f3efa7375.json and https://artists.proofprofile.net/proofs/artist/f4f81654-63ea-48e0-aae0-bf8f3efa7375.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Acoustic Lullabies, Nursery Rhymes and Folk Classics for Children and Their Parents
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 0x98c8176879efb31bd7409f8383eb48c1092275c2e98a57af78edb89a6b65350b. 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/TCACC1480969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b141b81dec59c5728c1f10d697197c3a85d6c85577af22e4d1af3e1e432c45. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCACC1480980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b7d0b24571426e2ab6e6449c5171084ccea277065f2486519a8acd69f32496. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCACC1480972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5274a146deb1e3442f126484b57d450fc6b2d3dfd38e1d022f1b6c6eb4ccfb64. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCACC1480987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a3efc40f1a5c53afca2881224011f9358d9e94d9f14b0043cb6839951d6013. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCACC1480970.
Lullabies on Solo Acoustic Guitar for Babies and Their Parents
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984a384cf0330f73bed0b21e3213e116dc7b92ca8a1ee31d0cf19099c829e914. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/TCACC1480982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562f174c82522a36186ec7909abdc8ff8adaf61c0005fa92d3a1e6c67772f311. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/TCACC1480983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09f39b866ac68b4fdaa3f8c80a7b1ac6f5274226796938a621e12baa0ec91cf. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCACC1480978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be48f8ebab89fa7a95f69e18459a586bb5fdf7038e4a7a82c400355846ce117. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCACC1480988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227201ce784766752c306dd7970ad06b5db68776de3cbefe75b1548423e4ad2e. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/TCACC1480992.
Piano Lullabies for Children and Their Parents
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa393100ca853843820c4dcf087b69bce63c93209bd783ed3cedc79472729daef. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:09:51Z), 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/TCACY1767438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830381a764e3a904adca21848adafe3a6872c7b0b143ee1d7b7a8afb17443876. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:33:21Z), 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/TCACY1767461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c95fb0e67cacb55c11df9b775e0c564a9034237cd7821d22c350edc4aaa3889. 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/TCACY1767466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbab19149861f59f4fbaebc6a49c842fd8665929aea3cbfbeb02d314781c43a6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCACY1767484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2341b2d575bd7a56de3d5cf651aef80fb5495bcab27329325385ef8d5aadad99. 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/TCACY1767488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14e739e9c27f6876fe0734a7278651880d1d0a8b60260daec6eebbf96075a3c. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/TCACY1767447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc94d3fb50dfc66178632c81ebc2912a20d95565a2b61f077755c0a6feb06fff. 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/TCACY1767463.
Nursery Rhymes on Acoustic Guitar for Children and Their Parents
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe910ef6521c3cf4deb5b083218dc313e59cc7e6312aa73372adedd33809d1522. 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/TCADF1795602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd2d1aaa42fdaa8678c9e6b1ceefa7b2c6599f5a19b58edb4948f635d561c77. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:00:05Z), 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/TCADF1795624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb73ce88fd6ceedd2f7d77f7b8537a40054d21f038193b632b1976032263307e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCADF1795576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84eea0eadfe0f6e11d6d9e8c57860d8c3dd161cb1e39a032bcd146a493799420. 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/TCADF1795631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef7eb3e13ee99afa5c3f0a69ec99486d5365060037bc85d80c8ea0183ef10f3. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/TCAEW2010755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb306ee7d4c90d6fd75ba69e99b8fbd256c4ab6037978b1d6436245fcc273ba. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAEW2010814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf2138c4d61c5695b030cdd002da954390aff757b556d1ee2c34f3289c53e61. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZFYY2137227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562516f1709d6b421d8e4ca889181c157a605583bfc94e283fcc2fb43b59db1b. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:12:00Z), 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/QZDA62177441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562516f1709d6b421d8e4ca889181c157a605583bfc94e283fcc2fb43b59db1b. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZDA62177441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e4cbab4ae499594f470ea7fcf590496cac40444fc4d56f8b5915264000a017. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:19:28Z), 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/TCAIM2467313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c9a0791b671c42b8b76f020ed6017fa7479c0535bd0bffc7033e3d2af5087b. 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/TCAIN2467372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f180b371836a028f5b01e9c283cf805809b52a71cb1d217d7ad54401249c896. 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/QZTB42516443.