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 0xe007a6b4bedf15fc99bddc4ab636d13e01957bb364419380121b52e79b0e8fc4. 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/52303a83-fa34-4a65-aec2-5d66dd8de653.json and https://artists.proofprofile.net/proofs/artist/52303a83-fa34-4a65-aec2-5d66dd8de653.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 0x7d99c3ee28b7cb0eacf2625fc066d3d62096b517e140ece9afb3d889b52e64a1. 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/ARG991019080.
Enamorado de Ti / Juancito / En Libertad
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98bb908c189bc19ee8fc02b3e7b575de719822cc3bbdfcac3c2645465495fa89. 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/ARG991019083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f4102736b958bd02c3109e92451ecd6dcbbadbb7732d94b2167ae46c493a31. 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/ARG991019086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259dc59dfe6cf2d7a92d64f035274c1b0fcc9f9656d4c298b8505c246c87faed. 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/ARG991019087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc198791229a98ebaee03e5c05b07ccc8ae258f46bc9ee50d24fdfcfe5b91d54e. 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/ARG991019088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d34df6658ffdbbd059a7a48274757001875c5f66e8dea3046df6ce4c241565b. 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/ARG991019090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3ba52fb1c45561e06d38404c94c3c7ec6cc747b867cf9f4b710bb9d8e97f6b. 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/ARG991019092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1cfd1c48b54fdecddda40821c45c9707999c19c10f07e369081c00343a9e829. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/ARG991019078.
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 0xea5d169f463bae545c2608d5764e45fc1d1a78726f567fd54ffd3e4fe1d37a51. 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/ARG991019079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888f4fc634da5c2b7a8d9c00b64f1249f4ba5286723fc3153ed6c26aac352268. 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/ARG991019081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb151d1a705f63c0e3898796afe63c726e898fdb949cab8956e8beb668c9853c5. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ARG991019082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7415dff79eda3dcd82549b15be174cc892331efdb1d001ccfc34800df2bb17. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/ARG991019084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457cc802f1af415b63bed9230eb3e7b6df001106b70f6ab91ba14d1b451d8e72. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/ARG991019085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f48a842876ffa4e9d0febc8532b119dfd2e63db49da1d9ea3b039a311b9398b. 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/ARG991019089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b126809d05238569aa3b218fbf5f7bec973285664a09f98049a5da31b638d42. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/ARG991019091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652f8118c723470c5583034202dede3f9f3123319d54c4519311439b8d17aeab. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/ARG991022073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5fc928c9a271b49d13925487611af1d2e0b2269c85d32c3624db58909ce538. 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/ARG991022074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3237272745fb3d2ac00fd11f55add0724ab90cb31c56924e532adea4772427. 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/ARG991022077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e381df4c8e2c8e073122857e3c656abc50bb29d8a441b6915631bc5197237ae. 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/ARG991022083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6cf375b722985e0a6eecf27ba3d9d7c3d4a787c8bfe3a265f0180e234394623. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/ARG991022081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bdceb6d584821eec2ade9079fa5180af2c1efac4b2372984836d4193bee5e0b. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/ARG991022075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc39fd4fc3d3d022e8078a5b76da30ccde47161dcc5b35145aa555cd8d4b5c24. 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/GX8KD2490151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3cfd6de348f1aa386494577a3f597397aed00848657412a80c7e9f6e62e26a. 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/GX8KD2428262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642bcb1d871ff4ffa56f5315821dc71fa3d26bc0b91ab3bdac6fce52c7c0d1cc. 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/GX8KD2497274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53628ceaf39db2d81d19ab2f62479dd4ac532941ee4eea04edd79a264e668a1. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/GX8KD2408661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924e5abe3e6814bb5bb33c1b2915556e1e635a6714f456d7a9ca807a0649e224. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/GX8KD2450799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c9cd93e93807ddbd650c004758c823dc319a2bcff4035fce663636f4c8a630. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/GX8KD2428132.