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 0xba3c55fa73e61d86acc70b73a7af106d99d10750c73fbaee5e8a64e0efc8309e. 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/2cd7ddc0-260a-482e-b4ad-09573cec88c8.json and https://artists.proofprofile.net/proofs/artist/2cd7ddc0-260a-482e-b4ad-09573cec88c8.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 0x66990bee92e9d7c4da8ff98ec63118b995654bf9f3e1f3c5206d8caf065104bc. 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/ITS781900625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756b51a574c6003ddd415d9d668f8f09a98b1305e6ea76621f0b8555394776d7. 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/ITS781900626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ebd54481995962826ca23a2782b3c5ac5fdf39e4a7141c5f28b579799774844. 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/ITS781900627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d926b087f9a00a5fcaa47919de2a1f62275e5a9e22af874d3e4f2ff1211e4c0. 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/ITS781900628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb9e1a4ed60f1e28e17d2c62bfaf189426ba919a710a072f0e88893714be22a. 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/ITS781900629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1905e1fb5450395513d3083c829beec546a6d304e795d4360992aeb16934100a. 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/ITS781900630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a9bbba115e522cff91ece2f92bfa08f198d91f57328e7850c1db676c076fec. 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/ITS781900631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838b49b4c1d6077b34c1be06401497c44eb14c5a803a6536f2fd712073bf227d. 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/ITS781900632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1177faad2392802ffb11ee9b27f8fc5a11e7f86b27b0953d063d25eb193a6c25. 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/ITS781900633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc79ddbe92de9edc22235a670e12f35bd649b6fd4af28b742b256eadec085ca. 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/ITS781900634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5076136fad25780615c5c53102aec50022c6f409f4407f5521db9432d10779. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITS781603158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f930af644a0df818a9c42f3823dc7397cb7183e434ee2f1e2ae2a115813c844. 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/ITS781700146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea4c1b9436bfd45ec8474d398dcb219abf8e417edf66e38964c7beed4b28b24. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ITS781700032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05cf6e40696c8c1ca4a1af6fa594119469523b2bbe3d81f19c9f925862c1fd8. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ITS781605924.
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 0xa1f268a0209e812549117a31fd38a3ae6f89d23526aea5a24ade5870dc93a266. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/ITS781605888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ae5a95aa4da213e520adaf401bb08efbc0c6821accd6c19291a09fc72e83cf. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ITS781700034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82af9915b9efb59d0c37075793b9197643615cb29bb86278c937b5f713a61bfd. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ITS781605885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed10e5ccbc1883bafeef63dd29dd2e0216b68a6171f5a68a9c0537ad172732de. 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/ITS782400682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88532e45f448793059e0e0ae1058cdf02b60441c4125a82ea87205585baba579. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/ITS782400573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa7d5412bacde764933253272fc3f7463e0a69958df77469a038054ca1a72e6. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/ITS782300779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4004fc8aa7c443ae6d316bf5ba204e2416ea4bae9567c4ebe719f44b894330b1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITS782200257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db5b6b46717e5581ac678fd7b00782f258fe77d77afdd986ef169c8915c4628. 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/ITS782200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5abc89ff15694574a8bfbb9a8d01ef7ce7a86b14cabfe4eb9bfed5711ed292. 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/ITS782000123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf387bc0e2ecd0dab17b1e1c14144026ee36f30dd4069b68b59320c3004de8672. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITS781900319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8070a7e5138b32be3c90ecd3a19b50f03b65f546c629f856d4056d26f967349. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITS781800706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeccf2fc90662b5c1be26e2d9def5609a7f5f696017045f6781a65766b2e99421. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ITS781800253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc40858cc8f5910acab96306a3381b7510d53c8303cce6cdd5b50c010a11fc0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITS781702331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2846832063a7f7471c72a575c53adadaa42a95ad09879db219be35436d60232c. 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/ITS781701454.
Women for Sleeping Vol.2 : The Most Beautiful Sleeping Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7325f25de299cea5d3b5d81912b6fca24dd16f737eae97ea898344abafc5c9cd. 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/ITS781800621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7325f25de299cea5d3b5d81912b6fca24dd16f737eae97ea898344abafc5c9cd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITS781800621.