thumb|250px|Pascal Comelade Pascal Paul Vincent Comelade (born 30 June 1955), is a French musician. Comelade was born in Montpellier, France. After living for several years in Barcelona, he produced
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 0xe38ef8d0077a3005221243ac7d9e43d7fcf2e392e0582b88e827ae615e2fcff8. 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/c0b76f36-312a-4290-b8dd-c2e0dcedf719.json and https://artists.proofprofile.net/proofs/artist/c0b76f36-312a-4290-b8dd-c2e0dcedf719.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Haiku de Tango - Traffic d'Abstractions - 1993
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 0x231d8cd1873f1aa9eacb0fc92e106a1800c028ab8ad8ebedb6f95094cf7c7509. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR45W0100204.
La Isla del Holandés - Musica de Pascal Comelade y José Manuel Pagán
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27ee485ec696b44679a34f841a8852f43c66dd1fd65cbf77e8e39cc0ceccf30. 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/ES5300511650.
Lo piano vermell (El steinway a la guillotina)
Música Pop a Catalunya, Vol. 2 (Catalunya Nord Vol. 2)
Música Electrònica a Catalunya Nord (Catalunya Nord Vol. 3)
El Steinway a la Guillotina (Bel Canto Orquestra en Directe)
Pop Songs del Rosselló (Catalunya Nord Vol. 6)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de7993c6fce66e1dbb238c2dfb44a62db4e2076f3f043675fed897d9ccaac77. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:09:19Z), 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/FR45W1400030.
Concepte General De La Quincalla Catalana
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3924be217d1b43c4c751bed6931a19da444fdd2a1cf292d51daaab2e8d9b86. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/ES5301561589.
Les mémoires d'un ventriloque (Chansons 1981-2018)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09a14bcb5e129cd8528c3f261f124ba5eed8612479ea12c16d8d6d42fbd967e. 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/DES012300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf27f4236ad71f5d9a83f4ebfbac7d02b61199de55ace569e7a32864d628c41. 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/FR45W2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2141aa59daa6f2177e6651dcddaccffb595c70bc109af5ccf39b7297a4a756e. 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/FR45W2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa942e3bb88f722756a132ee738bb7083f7bbd7d3c4b5649d5888795c0b5f1b93. 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/FR45W2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716241e3602a05c003435ea212a5c77e18e7f67148ead024000e51f91cbaba6b. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:27:07Z), 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/FR45W2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba80e55cabb8bde4819ad46d863fe308adc6d732ef0e24a6e7d0564ca8547af. 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/FR45W2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05e1c4b5f75f6399001bbad54bc4e39bd694db55f72d4f328f7b9d071d1ccf0. 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/FR45W2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287ea232f7674bd47a2a1eec84daae916f8f6039d8bdf01a67b5551446ae5d85. 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/FR45W2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e75fd084f4c4b76c0b15e71d61a591f819e12ffbd5b11359f1b91e15a35711. 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/FR45W2300013.
On ne mange pas la choucroute de Veronica
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736bcdaa53cb2746679590d9b593333ae502758f85f66b3cfdf0d282b7655f5d. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:53:01Z), 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/FR45W2300014.
El contrapàs vertical (Versió ampliada i revisitada)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a97af80b5fa0c791b65966cf05138ffa90e0c41c07d33b9f281b661f66532d. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/ES5302575669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73ed9b06f6986f0b039276f8cf381bd6adeea508306ab9154b62c18b52b2b96. 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/ES5302575670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6883cef3f32bab904cd098ff7316c87cc672725566136f1c06af93241f361649. 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/ES5302575671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3d88fa170448ccc6ddf8555522ad7051a154f75904033e4a8aed730461c4a6. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/ES5302575672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7800a3dbb5fc801d5710029ddf2cf06ead326e320974409692c3aff111e7d60e. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/ES5302575673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998752575268fc54b1584bef8acb3668d0fa8f409151f5560b6f82e8eb8f30b1. 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/ES5302575674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032dd2c1244fc5faff708bcc5979e334695324d30459046a0d9df51cad46feee. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/ES5302575675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd3fa13bb579dcabeca89669678de90ededd13d8fc04d29fc12ca951eb8f5cb. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/ES5302575676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b79636872011da9fcc51e050580658d2c190dd564727392b8e9812f797cba46. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/ES5302575677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d4de771c3c14d1d3889d312da9cab37e7b0e2525a888d7213c770e012bfd7d. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/ES5302575678.
Improperis (compositions et enregistrements magnétiques 1984-2024)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd9df5bd2b0ea4b71846e59432a9c742a35bb5d0adc96a08403d5f4aab18201. 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/FR45W1400020.