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 0x10b2a6ee4caa0acbab0f7c58c6a6e5604223772f364604682ea962539f621633. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a36fbb17-58fc-4c76-854b-7b816570d836.json and https://artists.proofprofile.net/proofs/artist/a36fbb17-58fc-4c76-854b-7b816570d836.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La Inevitable Tentación de Ir a Contramano
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 0x66184f0e04fa8326084002eecbc6081b8876eb165d29bd90a63352b4c2f23542. 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/ARRDJ2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38536c0c0c1212eef9de331490f414b750fb13f7702bef3935a8371b0da9d558. 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/ARRDJ2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11297e5055f855c78135dcab2e9ac318516a7eeca368a858d5071af2f132fa7e. 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/ARRDJ2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7984f67bc95ae1101272e260b5b65a0ceb329616c7b9e13d1f65bdcf9cc1a0. 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/ARRDJ2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a9c434db46f26bf9bb6914417517e580951e33e7d5038a425e2dbf62a92a62. 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/ARRDJ2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b01eddbc8ca16d12067dfd5c10d9704ef36e5ae7b8023385049151fa198fac6. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/ARRDJ2400004.
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 0x46cc67f2663e1bb05e7e85d32d85be9f1f5425628c1a794207a78ee750bf9a81. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/ARRDJ2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9926dd48cbe28ffcfb3cd28d306de1cde30e3f34f259876ca61def8bcd75e961. 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/ARRDJ2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadaf2e44f0a034d6eebf7666caa2314c73ded2a11a19c81c13ad73fbd87ace5c. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/ARRDJ2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b704cfbb7643d93cdffa4226a010c737d04be06c159f05b2954ca00949f3d5e. 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/ARRDJ1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14d19d1789609b47d35ec53f8f8e265648c19bba885933001153cb1de103199. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ARRDJ1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001f23412ac68ecd628419d7d920a31b2242b5697368993a2094a5bff454275d. 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/ARRDJ1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bfdfdfdb534b45c1ab164690cb727382e0157adf2290dcd58866ddb1fe894d3. 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/ARRDJ1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bfa8113d409cbd09391eac0a999690c7956188f17cd76fb6baaa8b581050325. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/ARRDJ1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0133257310104d0c7859e491390bf2d01958184e223e5d83e911f2c0f8d5fa78. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/ARRDJ1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5e7d03b2db46fbbc3457421bdce56819ee6df0add51460c51c91e0078eb9d8. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/ARRDJ1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8bd4756f9d39267ecd4c08dd48e655e8dfc726607764b3af95dd1bed8a32929. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/ARRDJ1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b772595b3ffeda7b9c1723d2b1e1a01db12b7164e152770b8d5dad380c37b97. 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/ARRDJ1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c8a863e2e01a8c83d8ec928b8b95b6ba555c5adbe719f8c50c36f28aa68507. 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/ARRDJ1700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40a45bfb1e5d3a741c620677e0077815c8d7465cf5a8119606c30b1bc110893. 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/ARRDJ1700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffbaaba1aeb192e89e31158b2c6483f4d619db516bba055f21026a38ff8ae584. 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/ARRDJ1700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d74b41e07a0b0bf6484b5b2fc035a8d761812e4acedbafa627962326e68afe. 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/ARRDJ1700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23824524f285d169d5f1b4760e497981769d9a25754a5b132fc6b36b2fe26b24. 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/ARRDJ1700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498df5e83914b4bb8af7ab7d7ed6864211b17d854bc79bcfaf6681357ce6d41f. 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/ARRDJ1700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb332c1b347ed00f22f8aced4a620b5444e9d6709005b92a1551832835f4de641. 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/ARRDJ1700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3986818cf26ec2055f85ea1befd64ab8f49c89b13f3b3f5a71f7650b9dc5373b. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/ARRDJ1700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864534f3fdccfdaa06f4e0aee17fce6678488e48b69a22da4e756b1a58b66485. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/ARRDJ1700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78036a09f66dbc62e53911f122f364a58a69bc23ef196dc719948c0ef8a0b1ec. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ARRDJ1700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d573a58dd00cf540f508d169d806771c0b97b62e08dfa4ff7d27972a16d7c3. 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/ARRDJ1400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02142dcfb1576df97ecb3d9c3a78b7e558338da1d1584992454407a1ef744cf. 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/ARRDJ1400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48904c3fe4a26207de19ae13050e473a82d7cdadce4a887d0cc92a3f29e37eef. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ARRDJ1400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd0db874a0b753557a063502e8b4d29ccb22ba9bb604e65c4d8f1cb40f7e60b. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/ARRDJ1400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4832b9471fdad528aa306a4968ca9f3d4861830842b266c451ce695e9023cf8b. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ARRDJ1400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de14507fdae3763533b4d7aba5c7ca4c140b7ea3f5828249483befbab47c5d4. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ARRDJ1400015.