thumb|Gossos Gossos ("Dogs" in Catalan) is a Spanish rock group from Manresa, Barcelona. Until 2002, their music stood out for being completely acoustic, with only guitars and bass. They later added d
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 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 0x006423b2e0e50a3cbdae12b58ac5b18f03434ef2f05b16c757bc3bbbd68098fb. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2bf233fe-265b-43e0-be60-40f4088caa0b.json and https://artists.proofprofile.net/proofs/artist/2bf233fe-265b-43e0-be60-40f4088caa0b.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 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 0x415f8620121c894470ecaea4b83d57da77526c128d25bf801633b1002d027c7a. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/ES5951304370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3664fc3d32ff735dfed41202dee6ace83bf156362372ffe37a04ea8ce1ed53f4. 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/ES5950602151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb792c7e033607281d3f8753b1bbc80c0c440a147d9bb99ceb480a69b1e9febc6. 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/ES5950602153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad0a752de34ea357c941dc6c93811cda07e10e297c239ac87dcf61be1853d43. Chain 2 (Bitcoin): anchored in block 958882 (2026-07-20T12:45:27Z), 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/ES5950602154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83dcd4a80f5ff9961568837e04e2d885bec4adaa785b170b87e7dee5be61981. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T16:26:21Z), 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/ES5950501680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15e4887f7cac3531eced56c1004022a2087e9d79e6e402dd8aa48597f359bfc. 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/ES5950602161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0dcb4bb04d33e328d6e1f224656a61a253c4e37da16cb9b89aeff79904bdb7c. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/ES5950702213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b065d03b2e4b846f5003f51b6a754aee3600a48e773a0c015b7fb34eeb02ea. 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/ES5950702216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98039a2b411bdaa62ba5f028c96559b61be54f3acce69613f6683d571c34723e. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/ES5309801643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf86d7fec58a6a1d021f120e09559cbb58e0cb6cde416ec086ff6ddc463fb0bb. 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/ES5309801646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a55241b4ca4488b2046961d82230d830d4c5914ea49a89563fc53bcf708d6df. 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/ES5950802844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe24a9a011f23c95c9d2cfffbc2c0358a60b7215af028d2b14aece2e1f2fa2c5. 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/ES5950802848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f32216a4f16006bf9b0e07e69ef3db7bbe027047dc0ef9bdf20a3bf9cfe6f0b. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/ES5951003351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x122f57ccaa3c321c66d396bf1284c6b721844c7db70d907f86a3262a9c4d8190. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/ES5951003363.
Res Tornarà a Ser Igual (Polseres Vermelles 2a Temporada)
Res Tornarà a Ser Igual (polseres Vermelles 2a Temporada)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9cfae44e48abf02e97d0e02037f5a675e3706d353a5b4e636b2f41b4619f40. 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/ES5951304330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc26016f46c9dd0d57445d10f8f1ab235ce3dbc6e7d97323c0dd79104364fc2. 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/ES5951304333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a63d4812593bd93292825702aa6f7fa159c989c9501f56506e1fd7ecea6cba. 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/ES5951605407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37618e461ea8b77ff7b111dd30deaff9e856b63ad468d5e853a69cda90e2ee71. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/ES5951605408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4761bbddbf50f8ed5c279c9f2873b0057a1c97e5bb42ed9462c74e08313729a6. 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/ES5951605409.
Paraules Que No S'esborren Imatges Que No Se'n Van (En Directe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2659e45f25e20b40894f5f95cfa8e48e56a40fc1ade36fc236a3ff6c5c9df81. 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/ES5951806075.
Altres Cançons de Nadal 4. Un Nadal Amb Nens
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b0ddceac2a478c9c75777f7a9a0baefd47fe85609f1a1e094f24c057a59f82. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/ES5950702456.