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 0xf1301ac04ed0470f7bb947de17bc5ffd0a04909af291d002f57fa041ac3674de. 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/34c022ae-743e-4603-a7cb-40ed1306f599.json and https://artists.proofprofile.net/proofs/artist/34c022ae-743e-4603-a7cb-40ed1306f599.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 0x0d82b22cb1fa87fe497975d1ce352998781791f16b1aa0ac4a92652c346cef9c. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/ES8241127301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47d94b174220b2feb69b9e56f6889b6c7085be3db989e479c4cc62aebb82a3b. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/ES8241127302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aee886e51abc3ed0e8a2aacd33f3b4cacb7f7945731bacd30cab06bb04e1ef8. 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/ES8241127303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3314b100c7750ac668f7b8e2d744f3877f794215728af562e22f9bfc2eeba9a. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/ES8241127307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2104efe93168fd1aa9e80d5119c0ee471320a100323e9fd4334e99cc6d906a. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:25:14Z), 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/ES8241127403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90200f1a01f3ca946ead0fff2ec8179aef7eb9eb79bfb378f3d92583101113c7. 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/ES8241127408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ee04dcd8646f7f13f22b2b8c3aaecb2e65477423eb0aef2f30777cedd5decf. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:09:29Z), 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/ES8241127411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd238d389f58df292b865f4c940c9bd87b05ede2a7cf53842f7b50d75a47f2518. 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/ESAAI0230282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48489c8aa50570f46e9402539b28b8751d4c06880a60d47d0ac5d92442ae59b6. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/ESAAI0230284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeef03723f9b7f9758d0de04472740e2ac9e081e72d1c0b318336c5963a4ed49. 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/ESAAI0230286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47d14d8f1d869e853f95a2dbf4614400eba90f281b13e3bdefdef8ca90027ac. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/ESAAI0230290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dfabfcb4b8c896355ac42ff95525b9a5546a293d4f2e7822981845db29a16e6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ESAAI0230291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6bcc140e8d9aea2b45cef357f1b8bcac21e905225c959dab566a6e71621c89. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/ESAAI0230293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b79a11f9b20a12e32166b0e442aa7554f9dd728d64289ea24e1c49acb8bfb92. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:13:59Z), 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/ESAAI0230444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0fbf738eaf1fe9aad90e31aefe0b624ce3ae8c6f3df300632c0111babcfc9d3. 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/ESAAI0230448.
Balance de Daños: Los Mejores Daños de Nuestras Vidas (Vol. 1) [Live]
Balance de daños - Los mejores daños de nuestras vidas -Live Recording- CD 1
Balance de Daños: Los Mejores Daños de Nuestras Vidas (Vol. 2) [Directo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65720c6b3f2cf728392b33f4cb483cd514a179d4adbfd81a47ab78f6be0a0ebd. 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/ESAAI0230148.
Balance de Daños: Los Mejores Daños de Nuestras Vidas (Vol. 1) [Directo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d20ddbea4ea925462de64014571f1b42e900570255a4f3c109e53d2d42686c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/ESAAI0230097.
Balance de Daños: Los Mejores Daños de Nuestras Vidas (Vol. 2) [Live]
Balance de daños - Los mejores daños de nuestras vidas -Live Recording- CD 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b0da3134897d79fad52d4ffcd8e8610a10e16a39a7d423cfb9366b4996ba18. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T21:01:02Z), 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/ES8241127501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2704a4fa26dcc647ada59788019f6bf15f8330ccf7d4e26fc9f1eab9f689294f. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/ES8241127510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3ec0e89414802c80bd3fe60286a831f85f6f6d8e9f9addfcd17eb61a5b968d. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/ES8241127511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e84d65242fbccc48bf5c7c0bc7e82c81e03bfa84daf11580618c3615603e34. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/ES8241127001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1239f5f865d794e28a39d994ee28d1c3efb6dc86edd8c588776b6b8f99d3957. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:08:06Z), 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/ES8241127003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1553a67aebe8806fe5c928c1f37db1d3b6122170d1b44310ebed3893e55ef05d. 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/ES8241127007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x166913a80bd308703af74b8c909a927860393ef81b3b42afe6560aa7a65f8a9c. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/ES8241127009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f99c1d11e978647a9ae75a40f3867b427e6b21c9ddbc98245bf4cd5c8a31df. 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/ES8241720302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d188183258fff743f1763476dbd14a9c1e8e8ca923b9e5fba39a4b0175ae481. 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/ES8241720303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142b9b3436fe2bd397375dafbb0cb658fdbd2c1677e961c8a38d33a03932eea2. 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/ES8241720304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4b91ccbf43042351877a18e53cc420a9eb29050a60fe975725decbc10072e8. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/ES8241720306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed8ddc9db9fbc84cb31ed8a4b9d90be63af839dc23318822e7c34ecae7c3add. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES8241720501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e5b00a68490d17e2cc291bfbfb78002d087b9d269ab3d951e3a0d0570d0bcd. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:15:03Z), 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/ES20D1901203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6cc6c15fea4ee7b405281f9f3c0fac2815ce384aa94e47d2379b6a290abf64. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ES20D1901205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee24eebe910d4c08dff7d01490890e683686a7c6991556d721671322aeb17ee. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ES20D1901206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c54c6a4a7075f50c0ee0a5c4877afa599a58e90c3e75f83956814c0958da0e. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/ES20D1901209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924d42a3c2d686f0023581b2b4b5340a592f43e1bfeebe9685c72b16c6a52585. 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/ES20D1901213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22aecf05b65d12092db55f7b5d5689a19f950f52e143429fe055a2e48b2838da. 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/ES8241625712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad7e90fe0e0d748e5a66b9621adae700fbd0b2e618398ed70267b13de371fa1. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/ES7420605189.
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