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 0xaae5f1ac020b17ca79f46a550f71fa4b683bf36f53cec98ce70ba771cfc0a5ea. 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/30cce292-2cd5-40bb-8ec2-f217d3004c70.json and https://artists.proofprofile.net/proofs/artist/30cce292-2cd5-40bb-8ec2-f217d3004c70.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 0xe07b276936a8c15884b365779c7dd9d0ceb7d216f437521f42cb700fcbc8e47a. 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/USG2M1200125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d062d1ece15c047a2fd4420f4c45fc2706463f700ea3451c8bba7aa4eba1ebf. 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/USEL10400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1d8d446a746ac13e366cd5d952addd2218f6b0f72f119f78e3f73296aef761. 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/USEL10400053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde73ff45e3176793df5c1118fde9d06db4da7ce458ece1fcf452f0726ff64f6. 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/USEL10400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525107a972fd65a22f02fb0d3d5ee34e9e26ac6d45530283ceef739c1cffa68a. 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/USEL10400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc746db8eec9e4c4240f7569cf43d91e75cb7588bca3a7e1f6a60d3b4182b8ea1. 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/USEL10400055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b68d6de00248f9827e211b38a4b8912181687e9cb22c63169e1d0d3a150d06a. 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/USEL10400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625e0b3bbbc942552bd4ee9f2fa3e876b2a43c1a2defad13186f073b8ca312d4. 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/USEL10100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01aeb4435f5589d9a9f160c60f3076f371306807693566e53f3e53548e5d8a9b. 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/USEL10100069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b42ac927e60db85eb55546ce1719f6e0a54c4fea9e45a645c6e34cfaab3ef3. 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/USEL10100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ddc46b1e6416620d9cbb26ca27daf4f8b6bf3c87f22baf1dc88e3cbaf36e53. 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/USEL10100072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3116e9a57647f35c420835caf3ddcba8764873754b36931aed65d65c0d8161ac. 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/USEL10100073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d34376f41ea6e1a7dcee17336529add634155d452a2b31e04631d39d129829. 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/USEL10100074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3ecfb121d77c3ad868b207f420db8f860a516c76f598241430e4cf41be8a98. 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/USEL10100077.
Top Ten - The Very Best of Joe Lopez (Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082923146c19fef4d850821ee053e1d7d1a8e68dada37a0dcc6d7edc750d09df. 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/USEL19400324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b22de3d38f7a2607d1fcd9c618df97690d1a4cc855ea9135768bbc3ce2c6ed1. 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/USEL19300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e150bb196f7776f7d45859a9ffc1f5a6d7736f0f9d6853f2aed705146a1ffa. 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/USEL19100387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cff396b69ccc63e0365a143e1ddd73af69d16f4c05e699b2def1accaae3ff04. 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/USEL19400319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18adafc73daf67cc7e7fb5352e92e1a16e13c0e4ca2b0c35a2c964b4c6b35b5e. 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/USEL19100066.
Que Me Lleven Canciones featuring Joe Lopez
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f2ba09cd04d2286b38119081aafc53dc4cd5f4f183760c843111494edad56a. 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/USG2M0600624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c9f2acdfbf7a82b8a5b9dda8050270a70972bb24a689960bdbe30350434b45. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:03:07Z), 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/USG2M0800286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2270480932b78cbc7bb78f48057a4368c119686edf9ef3f1a68abd1445ecf5b. 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/USG2M0800258.