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 0xc05b1f39f8b92b40782d2eb782fcceffc3fb026a63192e2b267d44849bf80c6d. 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/74d638f3-2e2e-4580-a51b-0b8639716018.json and https://artists.proofprofile.net/proofs/artist/74d638f3-2e2e-4580-a51b-0b8639716018.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 0xf06e2d9e946e6211cecc62afe37fbaab6e788343a57fcd4547ab37ab247bc504. 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/QZ9QQ2300604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2897625654ecaabd3ed43ea7beffc80ca5fd044960e316ae76894298468ef1. 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/QZ9QQ2300605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11bd5a07b8651993d628394d53e97453624cf0ee70e9c7538f23bbca588af112. 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/QZ9QQ2300606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f89cdd3c1ff7478a82b5ff27ed5afe41d77f83541528b79c9c58dd696b1e82b. 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/QZ9QQ2300607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ee4cd5d791173159a1ce32608983b569a353c6155559e789adc7e8ee919e81. 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/QZ9QQ2300608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5010e0df894d6726a4c9e9a7a890b8f851b4f350e03ac5634aee71b3de0f1176. 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/QZ9QQ2300609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839eda73c65b8391f761dbf53cc99e748273abb3e54dfc227ce1d9b4af8979b1. 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/QZ9QQ2300610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e41e684215def43ebaa1ecdac5606cefe89f1195beced205ed538acdd534c2f. 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/QZ9QQ2300611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ac1dabc6bc69854ebc1d63c343084596b51570de952cccb4213a9d349f51e7. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZ9QQ2300612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c153e6133c2c990f0aabf9a7d6c95e72ee5a6c304708e031f8ddb9a98485ac. 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/QZ9QQ2300614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba828a3c3b45a28a9309efb10e4629c29af96669c029348cecdacb7af25e975. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T18:48:10Z), 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/QZ9QQ2300615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35089a7d3af579889e5370744323c53c3cbf94ff2a6a165724647152d0e8d3fb. 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/TCAGW2398440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb48c3c6343f46ec6aaef7b0bc3e1a2feb11267145e8ea1c484373421e97fdae. 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/TCAGT2349037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63000e7c14ebaf7788812c4576fe03d20d7db636347f96f8f9097dd1de4434b. 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/TCAGL2250272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74af58b453d7caef87713e47df2496ba8fcb41f80b396d2c7da40ddff6ae132c. 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/TCAGL2250315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d99095e7d93798f7dbd7b318e836d78094d8a56ae38b23814b14c93f3bc0d5a. 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/TCAGL2250296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb4198648f8f68b47b6e088154f9c8fb7beb416ff4866782f8be486213e9426. 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/TCAGL2250270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fdd27616b7b919a0d416ad8e4591fb3d48af114c9b6556f985aa19ac4b1e99e. 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/TCAGI2211273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af3cb78f276f17bd9a4b6d782546d687ead6c37a9020a81e41d2dbe3c07179c. 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/TCAGH2271497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4765a607c4276c0892f5578e55a1543a7119ebd3a3df16127478967f58a307. 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/QZHZ52281352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6f98ead7d0ebbb26369d0e6d6fddecb7860fc7f2ae8ac18fb2598ebb764029. 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/SE5752258896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18db02a0410d00ef2c39c48ffeeea19697c7036a8277f7ef4005bc7470bbd1ca. 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/QZNJX2147768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6788141b82f636c840008a2440f163338d51574fdc07a6d8163094f03a242d54. 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/QZNJY2128357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b02c9fa97db7bf5cd2bc3ece248600f25fa14287416c53da36e175cf40bd079. 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/QZNJY2135327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeea540dd69c2746a4c1bebb1947e97357098de71b25708660d601381b18a348. 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/QZNJY2138553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a0bfe9bcbcc350851489bbeced49c71f8ea188549ad0c3bc94102d782f494d. 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/QZNJY2138558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e08947e380675cf9495dc00919dd9abd8e447ebc400aa6376b2567db6c360e6. 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/QZNJX2157664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd5ed89c4187e0e0c4c41d346620f999dba799870151a853c27c7162f850c69. 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/QZNJX2118629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be9e67681b7897211abfcc32dd6fcb9027b96dd19a0060c650809e3a337459c. 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/QZNJX2123991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01f3f754bba621b03906533cceb1bc0ae8eebfbfa39a18d5d42eefcace0897e. 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/QZNJX2103881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94370b8433bf22c5c43604e4d244b186d5e15bfb4778f40918a216076d350e65. 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/QZNJX2102658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fdae8ffa551dfd9a3c45cc31a5de751bab1f5770d7307b4483f0711eac11faf. 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/QZNJW2198227.
Popurrí La tabla, Emilio Cazares (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f03f1cc601114b64d34daae3682b4ea8f8cdfa06c502f751ee6da9681b5dcdc. 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/USA2P2360141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d149f854d62089fcecbe33073789a4529d89b6b9c3b1109cfd41c8c8c799ff3. 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/USA2P2360134.