Abraham Laboriel López (born July 17, 1947) is a Mexican-American bassist who has played on over 4,000 recordings and soundtracks. Guitar Player magazine called him "the most widely used session bassi
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 0x4c4e2d939f8738f02db35c71fc533d0c8d745b407adbe1a6ea9179ec127e95f8. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/354e20ee-285c-4d6c-bf61-3b8a3379b5a4.json and https://artists.proofprofile.net/proofs/artist/354e20ee-285c-4d6c-bf61-3b8a3379b5a4.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 0xfb9d16fd0f5239db3eff8a51737efc87c1de1d563280c7f19984c36b848221c3. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/US25L0901015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391af1040ad30dba3b9c8f5cb86b8e27e0df7c61577114a00025a8f096ff27d0. 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/US25L0901017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa5617339b9600315f7828b1148a74387fde28be61e0111d1a39d1693b4e6ba. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/US25L0901019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70a8db18c8fae59fa281020ef2ebafa4b80463425a398ee6832fe95acf2a010. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/US25L0501202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99deb0e117fa859a26818237311c1184fda55400beb962e75742e53c215e7cda. 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/USJ3V2385561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a67807c2a0668761c86ebb3164d9021f9e9c65f59a8ff462bf18c7b63859c80. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QMDA71589957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890431e6910cdc9aabbb2add70adf2c0475036d1cf315934b194c6943230b29e. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/QMDA71589960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7ddf4716358d09e83270e93d985d5718379680535b861c67702222c6a9d3d3. 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/QMDA71589961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92f902e74b38eb6707029cfae57a69b24a902ccd7793bbe93a0cc17b2a5626d. 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/QMDA71589962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced66138f998171973cbc5c68126f3b169e8c51f4d44ede972c676ed0e9cb35d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEAF40100314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3f3291ebc2e0d2dec4b315f72362c22fa90cd66b60529679d6525d08bf7cc7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NOVBE1801030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362b844d0d3a0cbb4b74d27be9487831d5bb4938d4db36f1bafff8bd9c6aecf6. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/NOVBE1801060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6802a8552b71180da0028908600da4247695f98cd28641cba836ecb8b3605c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NOVBE1801080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8989d5e480f26df77dccbd419777fa7297d8c33916add333ffffd4334b79a68b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NOVBE1801110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0edd4a7f4aff11b0eb458ae2fad7232aa80946e92fde44dd165b4c8c76b6cf9. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/NOVBE1801010.
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 0x5a922bda004aad752b0927ef97d7482472286d5d261619c50a54dd62484c8043. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/NOVBE1801020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e11b81ec5e9732dea94f357a544ed968a6278af14e8bb86de7e712bfed35a84. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/NOVBE1801040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4e0f1b58ceeb84ad67a27b57df8a2a359f8216ba2c2f1bb5d8ae4902be2c44. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/NOVBE1801070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178a96a558524d028b7f0541a3da0bbea176d0ecd1d58803d198127ca66896ae. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/NOVBE1801090.