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 0xac4744a65cc92a5a6ccd2eb567e0f8c9d8b18069ccce91fd5670323ac1d10d20. 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/90371a28-0c67-4295-859d-452816eed2d2.json and https://artists.proofprofile.net/proofs/artist/90371a28-0c67-4295-859d-452816eed2d2.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 0xca82d32637d321108f57388516b7e049146d76221bfce3c1d1f52792b150fd3a. 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/ES5150801724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d34af50e5cfa644ad3b892f84b49bd60d0ebc8196d03013cd2deb8b0a97f642. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ES5150801725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd24ffc6422db08271206d4bb644cd5328a5943ff4ad5210e0bba3f63a866de. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:47:18Z), 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/ES5150801728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e79e9c95e494398fa36410d9332cd8da0830ab74a5869cc0fa0ce45e9ec7d14. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:20:10Z), 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/ES5150801729.
Aquí huele a romero (Colaboraciones 1998-2003)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1290912e534bb1dcac739fe0ad0d7b0df3258de4d7d9346f03c0c973b45720. 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/ES5010600107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665d68ddc49c284bb2084a5bab192654b27ffae9d75ba2d3717405a8c2d9f0eb. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:58:25Z), 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/ES5151200474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d66ffe9fcc810b4c96288e32ee46d02f6b7317fc11364642786b13f3c3750b. 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/ES5151300441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c9429eaeb7777efa3e2f1741e01731adba235c09e82ab51acbed91db923fc9. 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/ES5151300442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1be6825f9b64743cca35a0784666bfe839fb9a867d454681c854282def144e. 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/ES5020400423.
Marioneta sin cuerdas - feat. Kutxi Romero
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80c4ce6d6c7c31481d235dba92222bea6a3f7e24c9b6e449835090e25d21aa1. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:28:11Z), 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/ES8241246003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf7ad277ba5ba4c4454920acbf0cb89d82a9c87abeecb0767bb806712a83c9e. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/ES5150663035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17465ea244b068a34b4209726a769e95d759665d34047fc8b62594d06e19b24e. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:00:21Z), 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/ES5010198011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1d3581b97acbdd9464f07f2a79f997a942c1981db579f1ea1413e18277f6cb. 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/ES5151300443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325b9f790a8d66a09613f198acc530eafb736af88897a7279c4f1e0a60b8168e. 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/ES5151300445.
Las torres de tus lamentos (feat. Kutxi Romero)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83505b55f74a7387b7933cb88bb0eeff41425aecf80c2904881c3c12fc289f19. 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/ES5151300454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0002d2a3748752760cea9705559bbed66706a2bb6431cc6aab4573d7afc7e57. 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/ES7420813994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb51db3af76d251b3eb37fd3a76980bacb3f1bcd68d857616de2ccda0ee91f74. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/ES5151300446.
Los lunes de octubre (feat. Kutxi Romero)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff94828607735b74493605c545ddcebe8eae855a3d729f7dc66fd1cf9428b83. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/ES5010300174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dda0ad109a8238dd0886b21d82455f9f6c24f3ddddd8ea0ff11e37884d2c52a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:11:22Z), 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/ES5151300450.
Romance de las piedras - feat. Kutxi Romero
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd870982c27d5c9030797c40a22f856c882f8753c0101cfc8f50d552a5998a76b. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/ES6880501487.
El carro de la vida - feat. Kutxi Romero
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8977248440c45f5c9052907b1ce3007b801df889b1332602d06dad01a7166149. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/ES6700700401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f114950b53d697548c578dad73a65879f7f4089d21767751b0a9a1d7ea30eb. 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/QM4TX1879267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86bad118b368ccd5c40fd24ffd34325ab433e91694d5aab89a2aa4988d328d2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES78G1330002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e92d8dcaef063a0347fe957ef058c26eb4a46c77f056acea3f2a591f13cbf42. 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/ES64E2303506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243345ab432ec2a2728bb86ddc81e9642d047799c7bdb0dcc1585efaf907d3bb. 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/ES8241865615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5682e41fcec757e87e9564428a717e8af31ee3c1f75e351373677878a0a8a1ab. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZZOPM2239707.
Basado en hechos reales (Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4342792f937308b166b5bddbc78ceda6647ccd4e802bacc68067dd01f6c43dc9. 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/ES5152001061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5964cec1eb21a728edff1eb4406d981071a8feb1f8de568a9b80d35ab6076e94. 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/ES71G1950810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805d44a3fcf127ecb9b734c33f41690dc0332edc5aec8404f4caa32568ca09be. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6P42068795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37a64913c4eaeb068d0a87441d2a66bc96e2d652d241b9b9a45617e866d9568. 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/ES8241866007.
Cada dos minutos (con Rulo y la Contrabanda y Kutxi Romero)
Las 100 mejores canciones de amor del Pop Español
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd352ddb7d1d1e5395a6b2a419f5d1ccf73acd39086070ae911901bb1df0c784. 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/ES5150700175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb37932fe18e9f212686eb294092fa3f9003de0d5626c26507bf439efa7b6a71. 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/ES5151100556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd352ddb7d1d1e5395a6b2a419f5d1ccf73acd39086070ae911901bb1df0c784. 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/ES5150700175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04d0647d6fc1380ecbc334ef5c423d15355bb1da70a15915b97c66ab32ed6b2. 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/ARA502300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04d0647d6fc1380ecbc334ef5c423d15355bb1da70a15915b97c66ab32ed6b2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ARA502300015.
Ciclogénesis. Magnitud X (Directo Totem)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24c39241fbb02952302a2d3fb0a72e78c14e72722447651fd0f30f1af03be74. 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/ES71G2415272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6402367bd31fd076e0a75d6a02452db7c58a5912ebb089dd8f82bf2888ebeb75. 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/ES5301560308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06bcb875e50316d6faccd53a2d94b2032ed611fd0c8802d7b880c56e7d7bc465. 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/ES20D2001010.
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 0x0f88110eb0b97782eccfe72f36f6b8f30359c9205d2dd38323faf9247c962b51. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/ES5301867353.