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 0x2856879043bdd18b5faa864584fe6966ee065aac2d84e71721f643c1acbab239. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5e956923-0eff-4724-a660-3cc25fb20235.json and https://artists.proofprofile.net/proofs/artist/5e956923-0eff-4724-a660-3cc25fb20235.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 0xa0385a8bfb6dd43649a0ab0b7391f1052e9a84a0e378bd58b383d5f9324c616a. 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/QZGLM2465008.
Popurrí Invasor (Con Pedazos de Vida / Para Qué Volver / En el Último Rincón)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d735971856fba9bbc8d0882a77ef53788874ef729c1a2a2be9a99a4ee3005f. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/QZGLM2465009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb262e52fa29d06641694b578557e5de892aaf16bef2ecac9b605d992664cd13. 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/QZGLM2465012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27021a9ffb982dab6770689ef374afcaf6e6cdc81b14f58f0a6b2667b465978f. 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/QZGLM2465016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70cfa4840761f3fc8fe2892cafa5f5c3d99889fd638899f2bd3fc4642d81613d. 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/QZGLM2465017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d449e486cefec1200232133d7769f69c56649fef44deeba3a94a58004903d38. 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/QZGLM2465018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553c56b781aa7a8e4d9ca9a02e20f46a3396dcb9255998ca8862db8ce1d700eb. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/QZGLM2465010.
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 0xdff1d5deabcf772b9b57549035f19a061ed1b1e8e914b605dba08f77d1b8df7e. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZGLM2465013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a89ea12753b2bca7accc6bc3fe72c2320c69b11750bfd1106c072c82e868377. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZGLM2465014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8186077e6fd21eab66363b7fb3522020d3cb613a5889cd59d5107c5b6c6f44a. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/QZGLM2465015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139f0966cdfe44895055dd0028745ffca2013be1f38bba718e76e099853e5dec. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/QZGLM2465020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4176d85e42cc202677dcbc9564e9a17a34623518f6e9100c6e55204c90dcd7. 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/QZW9M2201367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e70a8e4fc76583912e23c40eb7532f5f2251e2f4ddd8893587aaf74a9c0fa0. 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/QZW9M2201369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad9309e4929742fb8f374b705f21ac424e66408abda0cca4b9579afde545223. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZW9M2201372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2aec6222037b011fd2199d2062a1aa55444fc2ad7d6b0c9ba0c3eb524546840. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZMZ92281850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c6e0786a220c3f4e211fbb6bbbda274d7a9583d052a1f43c0ba1f74e3f5d00. 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/QZMZ92281854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ddb23ecbe09bbb7fc0387c8d3ac7e11685eb325345757eaabdd8864da66e1c. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/QZMZ92281848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9f7398989d5fc13f3a374d5d5988758ade20d84b136c4837d1ecbcefaa300e. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZMZ92281851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01965e79b31ce5a05b715811d16797a1d5c9fe922d9beab4dda2e6db12b97df6. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/QZMZ92281852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd63d3868cb6a892d6875e380f5973f1dacc4499c93e1f333ff410a0d1ae95b3. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/QZMZ92281853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07a277ce8411b0f0334430abdb309d46ee7becd01d0f737463fc5beafe48587. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZHZ52204409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14bd55b38bb21ffec51e45ae2da3ff7055b751f99c22ad3e935a75bddfd2cd2. 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/QZHZ52204416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf9021f0fc41234f8ffcf8d16a3510171541b19c11f93f44c0460c0fea84067. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/QZHZ52204407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055c42afd706e025b9109e25cb735bd0cb76c1d0691073fdf823caf3cbfd66cb. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZHZ52204410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616974824e87f2420af9a60115a2dda12f4e8ed925f707d23a96871674d811e5. 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/QZHZ52204787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3874641fa5d62c3571941da6be5fd984e0cfbd18dcb13ff1ad8e8271f730e1ff. 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/QZHZ52204778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b229411d0cacaec75cad3223c362ac951fa3c8f79645bbca8ea02a414db2a9b. 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/QZHZ52204790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0133c18e40c2cae1ef0793f92203feeb15f15a022f8dc38b80de8a1f50a0e40d. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZHZ52204784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741746bc8530a0af1929f48b1de9946fdcee75746cd164cca0666c8024044628. 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/QZNJY2480535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5746cdaf1f73df9bc8f6b2a7e1324fc8d727ca4d4c195c093831cb0f47d2e7fd. 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/QZTAS2435450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa685f61986ddb33678cd520d2bf80ca009f4a66ca9bb57650a975a9c98cb2130. 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/QZTPX2353804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89d804ddbe19538caeea66715c6464fd31c8104196eca7c4ffae1b0ead3ed79. 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/QZNJW2355722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab15e6186ec78f897e297720498b053993abd7869aae0f97699e58817544fdf. 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/QZGLS2343299.