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 0xda3248c87557c17f6be91f149009cff527d680b1e435bfb494a4b8e44adea0a2. Chain 2 (Bitcoin): anchored in block 953627 (2026-06-14T11:43:04Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2df2bd17-2846-4b36-a46b-56b40d6c82bf.json and https://artists.proofprofile.net/proofs/artist/2df2bd17-2846-4b36-a46b-56b40d6c82bf.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 0x22a8db8fe8f899d5c061bc12cee5fe831156902bdc4c9d0aed043f4f3043d08d. 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/ES65A0800569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3f16cca5a9ac0ad79afb599d334ce7f80faf0466171c322f833db9c7d3b349. 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/ES65A0800570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bcf4c7ddb6fc545a00ce5c3650067a768f724824638e2f7b9917a7f36b141db. 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/ES65A0800571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedbf5fc0f762d4f6b7d8427199ebd992cb1b88394d972bd782e1ec64751435f. 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/ES65A0800573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a723608f67cf05b22e960db372dbd3417f714e4355c15b212a12367ff45912b. 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/ES65A0800574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3c78737c8651f6999586bc0fc19b183eeda37de87e2c986863324e568886c0. 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/ES65A0800576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69328ee4af7ae6270fcf3f2748896be40678af1a40ca3e6d5ed95936e6ef17b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES65A0800577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d90c2f53074538c1ef2241884a7b0cc8235107e20fe7164c66faa79fff8575b. 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/ES65A0800578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc08e87a4fe9063085e9c168012bd0e3b7530b1d10a4b3cbe0d0cb0b92463cb7. 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/ES65A0800572.
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 0x49920373d0033d69f07046e00f319ff14fd4b1496001eada7defeb7ed2b52132. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/ES65A0800575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f029cb4c47fe4c4ae50a3d9f33bc9e618fcbb4bb75b802c58ac0e8bac0844a1. 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/ES64E2348430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a81fc1c19f9b43f00b5a450f27e21bc0b439d55af65dcaf148022590d03002. 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/QMDA62286109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b549af4329469aedf933f343d8e5b6f34e8e8f69c4ce637a7e5e793b8aa0e69. 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/ES64E2202097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf830b12efb07cf20abc3e0fc4b958f0be4b340ad245c2f44b25bbfb1143272. 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/QM4TW2240971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee80376086a4a0be5401b6b767c544fd07ec7d8366b61a398cb6c4c93a3e7417. 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/QZTB42451387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c81df692921a9a2d182ebfcb0462fa2358be935e6a8b810fd7cb585624e85b. 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/QZTB42451388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee732bdd2eb8a6fdc679a8321fb22ae51916c2abb9a424935988ddacc4b67a2. 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/QZTB42451390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a187b24f827b9d5643c9cab60493ebb7b261b02f82b31bcc9b11cfa84e5ba0. 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/ES65A0800705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb8d430d4894d9a51d5682a5b0daa836d1b6e5e1bbad0bcba1cf11f125bff73. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ES65A0800710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408a3aa10145b5a94fcaa65856a1dc66a3999459b33fe92ff786b42832941441. 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/ES65A0800711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eedc0d7d19b226b721d17b86884067110c3fd6e910d36088669dac09f8e4ef6. 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/ES09S2000120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c90c95bfc3ba227c77d6a38ec2923a02510f5541049106800c28518a161675. 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/ES09S2000123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c40fcc1606cb840878a715525789a2e288537e7bc335a43ccb35ae75487589. 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/ES09S2000125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4db9c45fa8123c2174b89bf0a634d5de4077ccfce41206cb5510539eb57800. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/ES09S2000121.
Flamenco en el Berlín 8 (Mira Mi Música)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5b96cff2539bc4f1f93446beb6b5fd275d6e705ae8039dd5bf0a4be25a30a1. 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/QMFMF2449159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06c696ff3e07c05de9cf9ea871a6ffaf94b751c93231bbb2f81a1e531682ad6. 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/ES18B2403072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b387f35bcf7c47465014647e91cbc62a882e02857352234adc553f75b4c096d. 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/QZNWV2465943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fad75523019a3dc5339b2caa1d3727f90f08334c7405070802a8fe517ec434c. 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/QZTB92423754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5eede7cf3775bbd8c73435ee8bfecc65832faeacabc954ce7281e3e03303caa. 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/QZDA82161521.