thumb|300px|Live at Open Air festival, July 6, 2007 The Last Drive is a Greek punk garage rock group. They formed in 1983, broke up in 1995, and reunited in January 2007. History 1983-1987: The begin
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 0x8933a2d7b153a7d326401d5f681aa8ebfd8c9766c3fda48ef7208348d7146809. 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/4fe5b647-f9cc-43d3-9ab9-7f8993ed13c5.json and https://artists.proofprofile.net/proofs/artist/4fe5b647-f9cc-43d3-9ab9-7f8993ed13c5.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 0xfe125e44f2809f1330645d48f749c833f3d6a702362bd9a82acc7629822ca8f2. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:35:42Z), 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/QM2PV1534748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7170d98ccb1f24debb85984931b64884f3159bb269083c76ef822b22668dfc7. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QM2PV1534750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e312c24c96d966f84e83b21c781a9c26c9275db70f49faa2499e735d0065ed. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QM2PV1534751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4227c13eaf71e6364934888516a923f6521ea1a3c31ed99d65faf318d92a21a. 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/QM2PV1534753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4893c6db863e19f70962cacd08a624bfa138586e901209a7a6e03b824a898a85. 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/QM2PV1534754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a660738f245315fef5b78b2fd8547a8cf4d0d182b4cac3f9a1514e1a211d698. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QM2PV1534757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1805e88cd66278b0c7a943919a8e88605de7b0b42b0d8d7157d65c261b510c. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:22:21Z), 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/QM2PV1534825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3662cadce83cb3fdf1fa5f5e8f8fb0df2b7ddd129c7a156b2c94effc70a3dea5. 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/QM2PV1534826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc1b67a099785437e5bc1f1ff0a2e4f2fb5497d4aa64123a52efea047753a83. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QM2PV1534831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0275536fe0756ebde3d946d89c189ed43ac976476daa49d872062e2d11e5f87e. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QM2PV1534832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32419c9d5ae645634c4ab5646d3ffe9377d1e90abed30e70b87fccffde9f016a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:08:25Z), 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/GRIE12500028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84db491c9ef892d3dfcecad1b4fe85e64e7652a00824fc30d0a1f3d34857a79f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GRIE12500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071f7fd154a4a5d6e8a2b12af2a0f0ca603f75a1f3198435e15ccf5597dae62b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QM2PV1538088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225147d9608d20984d5fcd40e55e16ab457c182b2036ef306ce52f255eb722eb. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QM2PV1535014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf31fb33afc5fd6089174c16667308ddb2dda2e3d5d7e334c4ea391e404858349. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM2PV1535016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359afb18d144bb35df4523879fa3996acb3226872fd21487a91c346f8d0b4150. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QM2PV1535020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe202212048b765488c017c5d125a9fad14f8f14643b93f7abf576f8e166ebc64. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QMPKX1317083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0904ccc765b6a9782c2412728217afe5fe2c972c873f8fbfdb0bd93393a6a7. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QMPKX1317085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc8b5d87c7cf7e6d5d6057ed36bb31e962cf72b62283926c178785f29544877. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:20:50Z), 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/QMPKX1317087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3da3fe7d0d071214f3f1d7fd1763cdd7d8503418b98360125f122da46dd95cb. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:24:12Z), 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/QMPKX1317088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc301663e286b849852607ef7ae84e8d96f6564f094181548e868eff14bebb7ac. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QMPKX1317089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28081a40fcef574113a024f5ecbba430a96056923fafcd6956654568e84c63d0. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:33:39Z), 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/GRIE12500043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafeefd58fba88ac26774086da4899d08786b20d269adbb07125ae47dc1b02763. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:05:42Z), 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/GRIE12500044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b6a361f7e31c1741011fc3c813c8492d26dd70594f6119048af89bd470163e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GRIE12500045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf31d77d1d23d7ae06f76f5279fce1df713939841c84879ae85a0e62d097cccfe. 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/GRIE12500046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b569e6c2d2ab2159f585eb32c096bf8580d1bfe6af4e508d58259b424b0bb61. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:09:37Z), 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/GRIE12500047.