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 0x6682062cd3fea0deed8cc877131d2dca2dc121a5e3f0b26699658e21b8b749d7. 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/187b39f0-73c5-4296-8001-711b3a0d92d4.json and https://artists.proofprofile.net/proofs/artist/187b39f0-73c5-4296-8001-711b3a0d92d4.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 0xe006296eba12f98b1867cd479ff4e6ef9329724c12b1032499a48395f2994dca. 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/ARF410500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843288f3d837dc59a153bb22a8848bdb1239a52e986c8f32d0f7d3f6970aa2fb. 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/ARF410091133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb1550c27a3f2981d344116a8775871d22e65a66f71e14338cedbc5a4e38a7a. 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/ARF411900157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd007848b1aa7f06be6ec2c0b97f16aab5e7b820127509478f494090c68fb5905. 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/ARF411900325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0935238c995ea0e8b2b77b33edfcf608ba9bfb27a023d94fb225eec360d5da. 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/ARF411900471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e9dc5f8976357edb48940b157cb43973f7ac598aabefb481cd402b55061c7e. 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/ARF412000281.
Watermelon Sugar - Ronan Instrumental Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabbf2e04adac88faba0f8ead24c4dcca6b4a6149773c50aed0b23e313d124a6e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ARF412100374.
Here Today, Gone Tomorrow (Positive Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06dab07a017ae30bd4e42578168a639139ec895feb5536103c267520cb0501ae. 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/ARF412200077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75062a3d45cf370680fa43bfaecc99501280a1663ba55f24d0e829e148578ac4. 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/ARF412000219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e9dc5f8976357edb48940b157cb43973f7ac598aabefb481cd402b55061c7e. 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/ARF412000281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360445a7b3f004f56b3b3c3448cbdc7acd9e6d10c2c8d957f74c544ab189aaa3. 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/ARF411900470.
Here Today, Gone Tomorrow - Positive Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b5c820dd93c91d9d5806eebbaf0d6b98b0acfe5eb3d59beb91f98874b7fec6. 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/ARF412100380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08237e4c9a840bc8cdc6defb44d38e84a82c23b6429bbbd20b2e1a8528f00ba6. 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/ARF412100373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb740e42d518da31f880b27e8e78e7e2dffe1eda034e46edaca7d97d4f169b3. 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/ARF412100106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd007848b1aa7f06be6ec2c0b97f16aab5e7b820127509478f494090c68fb5905. 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/ARF411900325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb1550c27a3f2981d344116a8775871d22e65a66f71e14338cedbc5a4e38a7a. 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/ARF411900157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0935238c995ea0e8b2b77b33edfcf608ba9bfb27a023d94fb225eec360d5da. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ARF411900471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a15380fb7266179665a9fe9a53bc16ecb08196ef63a69af9c02de7d2e59c7a2. 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/ARF412200168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf8945d4cf213552142ceb135cf07a345c868ff0ea7df9a7654b95754a6e0b4. 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/ARF412500146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e4126a88c4ca4c609b52aa3032d111fcfff70381a1a2e6155890669df294cd. 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/ARF410600519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61710205b685f1a694c045364bedb0da563261e32d7e914b3915dba1c26adb04. 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/ARF411100990.
Vintage Café - Lounge & Jazz Blends (Special Selection), Pt. 8
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7b2ae0e8cc98b9b5997a15f00142d99c163679ee0b1d7a9f98f43859f2d3ba. 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/ARF411601100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe006296eba12f98b1867cd479ff4e6ef9329724c12b1032499a48395f2994dca. 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/ARF410500007.
Vintage Café - Lounge & Jazz Blends (Special Selection), Pt. 11
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc6d0110b3c08fcc2d752fd40e9ede4802b43da3c743c7a9d2c008d819a0649. 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/ARF411701327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360445a7b3f004f56b3b3c3448cbdc7acd9e6d10c2c8d957f74c544ab189aaa3. 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/ARF411900470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a15380fb7266179665a9fe9a53bc16ecb08196ef63a69af9c02de7d2e59c7a2. 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/ARF412200168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04173d7e87671e4bbaa42bab9ac2063f71ea5a0c89e6381a20ce33531d92069. 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/ARF411001562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062010000363cc658c37ca09f77aa180a36e5e9a6a375160976123e389fb1b17. 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/ARF410600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61710205b685f1a694c045364bedb0da563261e32d7e914b3915dba1c26adb04. 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/ARF411100990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a84fa590dfbf0908e056af09060abf2a88665ec95e385c4918a65ab8fdecc4. 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/ARF411000137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04173d7e87671e4bbaa42bab9ac2063f71ea5a0c89e6381a20ce33531d92069. 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/ARF411001562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe006296eba12f98b1867cd479ff4e6ef9329724c12b1032499a48395f2994dca. 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/ARF410500007.
Brazil - The Complete Bossa Nova Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb601f74565cf5c7666578657e672f24e92ef52bb3dbe516813f55dedd1085a06. 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/ARF411001216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a626d4926624db43c7d9eda86ad9721caeade0fc0e11d6b3f253177939f262. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ARF411300006.
Vintage Café - Lounge & Jazz Blends (Special Selection), Pt. 6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd619573cb32d8bba441ae710142ddab7b68c3a414f977b57a3e444ed1ed5a74. 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/ARF411600116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e4126a88c4ca4c609b52aa3032d111fcfff70381a1a2e6155890669df294cd. 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/ARF410600519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a626d4926624db43c7d9eda86ad9721caeade0fc0e11d6b3f253177939f262. 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/ARF411300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb1550c27a3f2981d344116a8775871d22e65a66f71e14338cedbc5a4e38a7a. 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/ARF411900157.