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 0xd94adc1c6c71cf6eab3554aeadd33525859a5b2e0b6c2dd275313c82753de9c5. 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/20ca3072-b22a-4748-a7e3-30e1fccbf8f9.json and https://artists.proofprofile.net/proofs/artist/20ca3072-b22a-4748-a7e3-30e1fccbf8f9.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 0x6dd506836b255bd62ce4aae44539740186f4b60a7bc38667fcd764b4af0d9ed1. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ARF411401218.
I Still Haven't Found What I'm Looking For
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4081f2224e50e175656890bad7e4b48a7a1cccbae2119b28b197ef74dd791ea5. 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/ARF411800093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564f1875683802cf4bb626cd45ab67a4d119ccd79dd5817aaac3bbd95a96bbc0. 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/ARF411800094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6fcfc308456b67924dd7f89e9d7f2d0b1ca42988c9937ae4c06a6bd36e5820a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ARF411800095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47c0af0b573b4fbd045e4ab86398ede59cee010390d5ff0616c052ec8319517. 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/ARF411800099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f40b1d2dc21c88cc07baceee7f625875e113bb963b66989b2f7010205e39b99. 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/ARF411900390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf743df3cad80754e0d1ae2ba23d1c1d36eb662eacdecb435527f123753895d. 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/ARF412000120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f404cbe694be62ee7d1f9d06f922fbbdd32041ba43e2f8528c14a08d4456ad8. 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/ARF412000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1411643453437f0336c37f6e90eb420582b0eab2b7266e06e22909e3535a0063. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ARF411900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323d2183f58673510b3491306ea990b86331664156251768868e7afa26a257f9. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/ARF411900322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2035844b05ae0dcda4f1169a41c379226b8e006c4c46ced419c4566fcbf5f9f. 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/ARF412100076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc782eedfaabd088093cfd26faa5b8ddf39ef17f439c7a80756ddc96583218ebf. 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/ARF412100184.
You'll Never Find Another Love Like Mine
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722b0efa70e4f099a581e69c251958a57d45599d793bec425def50df8f19f8d4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ARF412100239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84351a124beda35e49634cbe51e0df180dbed21cd9b491bd78d3ee073df43843. 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/ARF412100059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2062c300fa5c3c42ff323f8123d696b1f1ff225e8a04c4c276e329f3b71f07b. 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/ARF412100241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11ccc09dc9e3ca5566d647f81b14022209130e821733f260d2331a3cde2a3a3. 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/ARF412000157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1411643453437f0336c37f6e90eb420582b0eab2b7266e06e22909e3535a0063. 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/ARF411900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11ccc09dc9e3ca5566d647f81b14022209130e821733f260d2331a3cde2a3a3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ARF412000157.
I Ran (So Far Away) [The Liongold Remixes]
Vintage Café: Lounge and Jazz Blends (Special Selection), Vol. 12
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45836bf65b2e34197e017c53a9b9091f254a27afe3d7e332da5448fa5c08eba7. 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/ARF411800091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2037b7636582fad072a26a6276bf60aff7bea770f42a8ea733f7df842e080528. 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/ARF410500101.
Vintage Café - Lounge & Jazz Blends (Special Selection), Pt. 6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413434999782c82b8c663789799c9bd468448887448f062e808e9e073912a3a3. 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/ARF411600039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02ef6841281af8a5cd8668812a7b3bc8bf44f9a4985749c1d8da280d2d01290. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ARF411800083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29fbb311cb55f59111ba3c79212f5d77355441c1f798b41cdf0ed10f7075da4. 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/ARF411100995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f404cbe694be62ee7d1f9d06f922fbbdd32041ba43e2f8528c14a08d4456ad8. 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/ARF412000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c085baecc5c2b9cfb25c73402ef5ca57ca2df6158286ab8d73f96c4a468017. 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/ARF411600122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8485fdb4cfb6aabd077325d0732c1549e02bf633b76eb315e6c32c865d1f776. 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/ARF411401176.
Vintage Café - Lounge & Jazz Blends (Special Selection), Pt. 8
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9553b9959134d4af9505030054aa495fa0784b2025bf8a3a100b9c63f6d688db. 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/ARF411601124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15bb548bb0cda24dac3a21b5677ad6fa41a0cdcba4dd0771dd14af7ec4f8bcff. 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/ARF411800092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb291c48175a47c0d9a6c973ca4fe8fe80fdcc264126fb7c20c93bae4510c7fd2. 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/ARF411900158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4081f2224e50e175656890bad7e4b48a7a1cccbae2119b28b197ef74dd791ea5. 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/ARF411800093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29fbb311cb55f59111ba3c79212f5d77355441c1f798b41cdf0ed10f7075da4. 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/ARF411100995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd506836b255bd62ce4aae44539740186f4b60a7bc38667fcd764b4af0d9ed1. 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/ARF411401218.
Vintage Café: Lounge and Jazz Blends (Special Selection), Vol. 19
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84351a124beda35e49634cbe51e0df180dbed21cd9b491bd78d3ee073df43843. 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/ARF412100059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2035844b05ae0dcda4f1169a41c379226b8e006c4c46ced419c4566fcbf5f9f. 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/ARF412100076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8485fdb4cfb6aabd077325d0732c1549e02bf633b76eb315e6c32c865d1f776. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/ARF411401176.
I Ran (So Far Away) - Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb4686d9f7815a3a55d7b80395d4ad5c9e1ab2d83b26768e449e4c0487fb0da. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/ARF412400090.