thumb|Danza Invisible in concert in Palais de Rei on 11 August 2022 Danza Invisible are a Spanish new wave band founded in 1981Billboard May 12, 2001 p.121 "featured top selling bands Jarabe de Palo,
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 0x013d2f26abc7cc2561c83f4ee0c3f62102058fd90f2162bab77ae19581c9816e. 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/10a0f1a9-725a-4045-ab33-e58e8aafcc10.json and https://artists.proofprofile.net/proofs/artist/10a0f1a9-725a-4045-ab33-e58e8aafcc10.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 0xaf760942ac78a73b8eb911b0524e8c82a56ec21785daca6486f92b4cae812598. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/ES5028300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee199cd265723a08875aaeec933ca80fcf32addd706d9ae69feb2670dc5db7f. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/ES5028500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe584c36eec97d00350b4c07877a276df2f50f62af1989056cc4dfc7927ce63ef. 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/ES5018665000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c648c7bbc91692606ad7f13e5b13271c6171312666da665c4613f57f96aa35. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ES5018665001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0426b57cf9bd7c7daeff07c6903328146e9a3de6dfdd1cec21bd0323736f2a1. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/ES5018665002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1efc5a53b32f8cf623b70a6f40bdb6c465bdf657e7e7c558b2bf5b4b66e8839. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:32:40Z), 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/ES5018665004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187c62f0b21b9fcc426d5c354fb4781b04902d4ec7459c10adc14b859100d5a4. Chain 2 (Bitcoin): anchored in block 957544 (2026-07-11T09:08:48Z), 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/ES5018665009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddc1879048e61da22e8772a7a14ff0ad821391520eb70fe18f44a32675b7abe. 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/ES5018765002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0290399aa362c50f2c89bae951052acd6cce58b7e73eb1882eb73f10e16571c7. 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/ES5018765003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0088bf321fa5a47eaa6c963627dfd348752d803760190044c6124f9e1776d04e. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:04:10Z), 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/ES5018765006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d69dd6c82b6fc7a8812eecae8d2e738c6b51bb90aa6d3c2d144cda4bf7620d. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/ES5018765008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844fdb16f15671c8816f2eb6ae38250f1f8e06ae5b5c9911e6763a0cd51a013e. 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/ES5018765010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65784bb5c667e24d4eb14dd473c28ef5655571faf02a7a12572cdba01e4f15d3. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ES5018965002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74acae72a6fcda6af7deba375b325209ae91dad82408eb196210e0ed458238b0. 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/ES5018965007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe2c2d807f866ee0e4f55276e589236b3fd27e8c0668183488a758291712c68. 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/ES5018965008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad5ff90edc47be01dc01bcdf75393394bb76ffacf92c001ce7990e9e495a004. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ES5018965009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225e12c5929b86003ecbc7a4ecb46c5d2131d626cd2ac71b7e183e8a3dc5409a. 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/ES5019165006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd99751a8514468bf5778b63c1b2c392823f0c7c560886337a87e5bf95f3d9a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ES5019365000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0bd606e7aad511b7c6369eae847de58f9a1621aa19be34b67e7a6a9dfc8e497. 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/ES5019565014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4b1f7fbc6279a429dbfebab39c65a3cb1cb87ca41a8907a997fff7848148d7. 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/ES5019665000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2cfbda92ca5d739d986e32df97b10bfc441008cfdb7d83cd9e572abc7dca22. 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/ES5019865002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8f917b3277cec4a5d935c734ea5c53e5e16f5f7073a056574a523b8d34603e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ES5019165000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5c6e0c33c29096e0083ed31c8ca53e6f11bc86436d8dfff779f756495a323a. 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/ES5151300485.
A este lado de la carretera (Banda Sonora del Documental)
Las 100 mejores canciones del Pop Español
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ce6f4f9d88d9f595e89c87e2bb770301049b1ec3645900d4d1c42652c4908a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES5018965005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2387ef9c1e9f42935f420b23d011d448ab0b71d7eaf35474dc2d5f75e7ca22. 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/ES5019065003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ce6f4f9d88d9f595e89c87e2bb770301049b1ec3645900d4d1c42652c4908a. 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/ES5018965005.
Las 100 mejores canciones del Pop Español, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a81cf159b6523970a6c66595f319bb3aea2f645e3fe67a6fe5ff03e0bb7285. 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/ES5018965004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ce6f4f9d88d9f595e89c87e2bb770301049b1ec3645900d4d1c42652c4908a. 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/ES5018965005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe154f6b4ae2d9ebc7c5cdb6f2ccfe5f5d3638a488508b83d256296a95994cbd2. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/ES5018865001.
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