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 0xa9a38878881b710adf4a88d20188aee8d33d24277f2fc684a8ef4fb0439c895b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7062ac05-e568-4e6d-ba2c-1c7dee9796ec.json and https://artists.proofprofile.net/proofs/artist/7062ac05-e568-4e6d-ba2c-1c7dee9796ec.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 0xae01fd8d5802ff9969aaa3237deeafc07147eceb5821ab4c1a967269b25eebe7. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QMBZ91730143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9d3e969dd5288869380aa51586e5e21c2548d3da90f640a12e84796b3b45c5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QMBZ91730145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32a032881fb1b62ab5ae7e0a30852a2bbfe7c6c6325af6d52f6cafcb7fcedf1. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:55:11Z), 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/QMBZ91730149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b007beef908f93455a6cecfb4ba581998a1320a4bb3acbe43e71546cb05290. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/MXF160000071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc510b0c18633de70f273aa3cde674b8131be8ba2d88fe5bc1f603db4a3391c56. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/MXF160000073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e905edd0cff0a7dfd18f3e1236a5ac4496ce8850be03923cecb743f890c86c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:09:13Z), 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/MXF160000075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4929cb3767960cc37ca15bdab60b1de7caa7680cc10f94b8d2e1144aadd5f066. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T19:55:03Z), 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/MXF160000079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12acf5ef2b4d719341cf716f2aaf0db3b1c559acd9fe721cb9afd350f433ccb. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/MXF160200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c914e8ba56fdac5f404da7c54627b8922761140ff63284f8619f29fabb34824. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:28:35Z), 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/MXF160200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687031c5cfae75f53818d330b0476c0c18daae8e6541bcc5c91c850352aaf588. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/MXF160200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa74b2c574122a7025cfa42a446f36748264537e0e2f6662c67accc558ecadae. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QM6N21851058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c594961f0837510909bbe2d93afef5f2483f0c7300d4c9cf2def762086cc3c. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USPWN0911516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e48a13cb16276d28103bb25d8494faeb8677e75fdb2f06a1cc34b2bdc7bbc2. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZXLZ2341262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776987585e498af115fb625f2eca2b158bcbbc7316c77e8495a16e6ee9176af7. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QZXLZ2341263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb94c6b45c6a1ea89afe254cc2a942dde9b98ce5f850c1388a07e26de6ed80e1. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USJ3V1322692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a7d90db67161bde36236b9925baa9df5e5ed2294f943db71b0438b51052eed. Chain 2 (Bitcoin): anchored in block 957625 (2026-07-11T23:15:09Z), 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/USJ3V1322695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ca12636082aa7e5b2a4fe7bef27c824f30b701645bbd5539fa5eb455fc7ac2. 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/USJ3V1322696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6204141df1df945ab7d5f46c004292b99b9f00c27b999d13f13c1de00546c9a4. 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/USJ3V1322698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef562293c4b3a7cc3b16bf5375d883d640d7cfe4320671a38a437b1d1cd5bb6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USJ3V1324748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ae2de05782fc1aeff29f4d096f9cc78ac5cdf9f5b849f9965ed6ae766328db. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USJ3V1324750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be5b5b747652e6f61a5319aedba9bc0e902fab812e3a2950020f6565e6c3b07. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USJ3V1324751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3780c385f4134a35d758f064f0524262cf74ff2874f942773ec4f48ff70b858. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USJ3V1324754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a75041d41246400e57c28fa309db0c38054b1df1d6737ef4ccb34b9a9d4362. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/USJ3V1324759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ba58432877c36b781225168d83414dd77fc86824dedc0f2af795372db411df. 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/USJ3V1327702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486505861d3ea87cd5976196a01fa0f0e0d8d6a2b1a60f8e75f6c57f76659938. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USJ3V1328970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59df20f7479b8860352afd720935c055ce567ba5e85ce9607432659e703c1103. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USJ3V1328972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9623bef061c3d4186fe83b80dca2cc460c6fe41863214944615fd5244a7e05. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/USJ3V1328973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5792e8953d438cbd130b4437df92ab07bc28ff1e6d138cab930be39865d1bbc. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/US39K1624601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9f215f32c8ce1c7125d9a4d2e520e9d340c721b06f6bd449917dec7f21c393. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/US39K1624602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060292574a2fcebfc1441030abb05b574a093c063a43990399fcf1920a9a3441. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/US39K1624604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03af96bd15b807dc1f5c0ce7ff956ea3f30f8ac406ee88cc8082c11e0d0528f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/US39K1624605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d16ccfb489c157ee44954fc0e614685e96f869535d6a54573416c3d15580a13. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/US39K1624606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876326eca7fd7e7d898a5f8e2e8af722f537614c72b89162d4f2f7cc3cf5313e. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/US39K1624607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef8f3adf70c9aefaf2dae993c11f1bcc60b2816b4cb4e83d7183147390c7dfa. 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/US39K1624608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ea7bed303b1bb0872cd0e0095f55a6849b80efc5cf4dd3dec00818f4000b1b. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:04:34Z), 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/US39K1624609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc831b9381c527ed058096827875a030f957553688451db8dfe92a38ac54d52. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:03:33Z), 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/US39K1624611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe123ea65916e82c7e76f2098abd310630e3e3ad67f98616203a978b4443d0458. 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/US39K1619114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7eac66ce82fc44d2628a8ceb17083195661a6ad4f4fb2d56f37263d7321628a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/US39K2116602.
Popurrí: La Talega del Café / Provócame / No Bailes de Caballito / La Culebra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d029c9fe7bb085080d83f0f5a34f8f9e10af10581015082d76a198dec4f0f20. 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/MXF169900153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9dfc9afa224db130d6bddd649755e3e5702b7ccf037fa5cdd6fc37892277372. 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/TCAFB2087221.
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