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 0x4be48a0aeb084e818adcd1df4a2eeb88f98738027d016675b83779715a4cedee. 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/141411ce-2ca6-40a3-a7e3-c5796e9c1079.json and https://artists.proofprofile.net/proofs/artist/141411ce-2ca6-40a3-a7e3-c5796e9c1079.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 0x2c10cd196c34c34955ae5b537826a07ac1fa5236bf8395c2756a3f3098310ee6. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QZES62020111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf669a320aa7664310a1173e79ec5e10a8a710ca1917d89e6181755fcfbd1cc20. 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/QZES62020112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc97eb6a166ea90cc08af177a88df325b97b337484b3f50e4b4b5969b736f22. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:27:53Z), 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/QZES62020113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e65c2abf50ec89e1d625508a5a003aba6277ffef541f970585b5c417b747c6. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:36:15Z), 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/QZES62020114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc183cf4bc5660d9f1a7193b3752b50727120016ed0c72d53afaa62b6465b7cf2. 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/ESA012063252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6f8370717135cc80958f2e32f8b34da9686c49738c31d76f88d7eaae565b05. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ESA012063253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad45aa8d77c9a86a4caa6d12a519e61403ad3609ca1edb5add22be0d43c1bd75. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/ESA012063255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4931e14deaa404dea9b4f2601ab265105d2f5493a6962ab6b128916e0237282f. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QMARG2150806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc47d9c07e1a81a1d0596dd51b7a3b8af98a679f6bb18bd600aade5a89676e24. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QMARG2150809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea647f321d74a5aa7669eda101f17b21ff7b2b82476c4b5fe8528b9865428525. 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/QMARG2150810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2718a56e46407465052fd470dd188bd7a5d5d6e5329410742c6dcc0b3a9b9e0. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QMARG2150814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df29e79ca390f204f0160ef95bb4718ead7fa690d655c4dcc532b951d64e37b. 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/QMARG2150815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaee320d5e0a53300ce9eb7dfb86743a38c705f4fa23fd2c024d39aeb5bf279d. 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/ESA011782193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80e8c688e5315157c8eb3800dbbe7252d9879703d7a23410b15c3a50f0f67fa. 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/QMARG2150818.
Fins on t'arribi el braç (Banda sonora original)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc263eebd8d57e427890046dffb7249cf455cc21d589b5ba49a0c9136ecad43b5. 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/ESA092295392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65fb325edbea3929b454328f50e578b34e3d7de9573af73511a6a7d75bde821. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/ES14E2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0076e21b9a149d387337dd7f88b2024a91788d403b8081a55ea78f2ee1390dbe. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:04:34Z), 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/ES14E2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c4753b7f1c3ec053ab1c0bd9f8340e2b26c09583549eebf7a8f15a88091553. 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/ES14E2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec990c6742ac8de2870bef242f9c6e69e06dd04b1a1ffee1df06109d6cfc007. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T03:01:39Z), 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/ES14E2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1914f87e144c5faaa8b7a4edf90b8c6dac900fd254a0723079457b0f2e4cc13a. 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/ES14E2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81bc0163522f53cce7521a1e2adcc630e122e00423a5ad6a5a2c4a007b7b2f0. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/QMFME2453434.