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 0x974180bf2c9b119cfdb657a45c91e85833364b935e1d6982c0b457a544a41f4c. 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/f0237ec1-3524-406a-9592-cbf4509f7fe2.json and https://artists.proofprofile.net/proofs/artist/f0237ec1-3524-406a-9592-cbf4509f7fe2.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 0x98860032cbca5736ae7893439bf6aa3bbe36cb9b86207e8a6597c4ca5728252c. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:19:36Z), 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/JPX562200429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8839fe8a57c4305c449b9f1cb7ff03ec2b9f217695bf5bf877c231c9d19449. 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/JPX562200428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c41f165ca6d5dfe9ea3a6699900761f4df4c23c22eb42ae2f925ebf62b391d. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/JPX562100148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aff841d40101ebb7b9a40cca2c2e14c6594da0c21de77b6e582877180507751. 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/TCJPR2260590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0de58d626940e28c0eb748e7e6d8c05e020cca7341bdde828935f3cdaa495e. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TCJPR2263263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32de033d97277645189283eb383bd3161150ad1c95f495c154564775b89bcea2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPX562200430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9285cce6236b8ae2823e2ed2b7e43819717e41371553e7d302d8d0e505928f3. 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/TCJPR2285170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ff529a7ac7fcf077f0a9b5edd254bf80e9566cc47a8d6517518d9fb99829bf. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPCO02216460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e2718dc1f36a553efd6c9d7e761642cd33c6aea8cdccc7437e79109f128465. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/JPCO02216470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa146f0b6aae5e267b548373fb461b0a19b3449a7ebb2f6b48e6790dcdf9ffd5f. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/JPCO02216480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71c79a6b9f0576763695a80922d03cc8c797e3c6148575deedad97c0cc8f15a. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/JPCO02216500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45462ca35bd27c7efc038cc0d86cf12af93f0d5bfab3b0c0232b6303b239de9f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:18:56Z), 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/TCJPV2314821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8390a01e19300d0a6eda42cbfa85cbecb84374e0bb2ddb6b81e20ec13704ad50. 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/TCJPV2314095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c38f105d2c48f24319a15deef4ddea773de2b328c8a672eb400b6d003a217d. 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/TCJPV2308108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ecac7454f777ada7a9dbd8057d7e37171f4787a4385235450c3fcd099cf444. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCJPV2312493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e8f6d6729435ff3bf0a7914c961ae52691ed99d6f62cbac58cc0c0a62772e1. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCJPW2316053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ba983da52548337ece6a5d5044a6307f0861c3d8d43c8c88f007dc2a5832a7. 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/TCJPW2360452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dac9549026a9833dbdbeed396167eb21abe35b6e32fdc6bf75cf8b634fda9b9. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCJPX2328539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4660e2d9a4d12dde4502437e8c9b411ed3d7a2ae1705683019622969322fa5. 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/TCJPX2369293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8a178374ccb70499ce02aee03bfdfe3bb32693aab99f00bdb0faaafe788529. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCJPX2395548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be84681ade827141f9234762d9c0e8c6104e5c8305a31cebcdae4654d3bfcfb. 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/TCJPY2360869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73af2d7f900e337d3551cdb72b6a016769ae944963846c3566de8345767ee6c. 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/TCJPY2483363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3f48814d5436f9617a40d4acb863968e9a88a5bf0ca25310dc61a9a14afb95. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T13:08:26Z), 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/TCJPZ2413826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10363447efa227b6742788779bc64fb3176437dc64d52ee4aae0accc563f90e7. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:51:09Z), 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/TCJPZ2413865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f15d0de19907b3bea7790b315dc3e88f7411ba5f7e691b58cb68c8ae437252c. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:28:31Z), 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/TCJPZ2414855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb07d93d85875d80e6c7dc13d9ae04df4ebd8fb742410b1f09595c14da63d2c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCJPZ2470958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe52cab8e0d666b8791e6499aeae2cb1fac3e7c22d4d43cf9c3c61585693ede0. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TCJPZ2473249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758d01921776007208c9482d5c3118ea460970ed26dc124002ffdd7c37ba3897. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/TCJPA2461325.