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 0xeb10de5ecb403226bc33b6af408b108d31d8980f7d5a8f6f598e99f3ca84611a. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f9d267c4-6f5d-4857-a832-9c0d284919a9.json and https://artists.proofprofile.net/proofs/artist/f9d267c4-6f5d-4857-a832-9c0d284919a9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nit Col·lectiva! al Palau de la Música Catalana (En Memòria D'Esteve Fortuny)
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 0x613927331157e77b641c64c3e922b7c5cd48d0f200507e7504f072a7ae00e533. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES5061200809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82ed22c0600bf5b305b800067f25454633ac632a40b6ca5df352727168ec032. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/ES75G1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96ab1ace2f23e911ca30da6997404b41d6bc6288f2f0aed6a43047626782c61. 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/ES75G1700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb777eff16bb732f5175a6637ffd88b3510fe54a2ac44dbe1c8fa957d28e59a21. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/ES75G1700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffb626695f634fa93f37c06d0fda5013a6efdc767ead4a10790d85704922626. 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/ES75G1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c8db601a0d87cc7139c2f74762319e1da423be4717c913f784668a927e1a09. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ES75G1700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58443cf1e84d321d1c458711a3da7a1f10df07e491b90db1d6bf35fe7d7d378. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ES75G1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0137eccd7f371945542890f7e8d6e206fe9c09ed62020ebd8810c91c3e9063e4. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/ES75G1700012.
Quan la boira no ens deixi veure-hi clar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f04e8c66b311ff74d39e5c2031bcbf0010a73f8570e9dd61fc592c9928a765d. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/ESA092500642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadeca90857c60f75f16e37f797d8b57fb03fc6cb8789be520835b026b5ab00bd. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/ESA092495650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3468925384fd2a6551e86e80ed0db8a51d9cbfc97b35614652cb584d4095ae. 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/ESA092495651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200e3118dff16b7ab1d9a3ac7a05d57d17dee32ba5f05acc0ad8e2ea247a9dc1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ESA092495652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0e2b1318416efb7f0bdf6e372d5b901965986cb9d69bf4f3da4a9bf452fe01. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ESA092495653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ecd75a0edd84b60b469e1dd9420b81a2c865724688ffd94bb16c08173cc940d. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ESA092495654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88bc137ce5c745882e60e76c8e91b238f98f8927085c34c5c35ba4cb9add477d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ESA092495655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b8567f560d430e0985a65bde471b2b6fad8e189922002238ec890c5475f3fd. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/ESA092495656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59dad194c35a547f28d4e5eb837d69cedb5a91eb55f094eae64c517fe4d3f851. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/ESA092495657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29923cda99f933ced91081a14b723e99a8ea67f5da3b284a58a3e282abddb817. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ESA092495658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf96d929fb1aa781c5fc5fb44d4332439ee4192cbd005207f864bc90b1ad876. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ES40B1800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360bac85a5be30be1469580069ec28814ffa32f410d118c3fa82a597b8022bd1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES40B1800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653b933c8b83ecb5db8dab38823cf5018d9d5bef4638d4cb4192d2176e76b6e4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES40B1800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22cf860331c50364533cb03297b23aa8ff2295451127eb4c0f3e74ff243966f1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES40B1800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f07c1ff63981fd5dac8d487e214986f4259b80763d37e785207538967b7fd22. 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/ES40B1800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3468925384fd2a6551e86e80ed0db8a51d9cbfc97b35614652cb584d4095ae. 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/ESA092495651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f04e8c66b311ff74d39e5c2031bcbf0010a73f8570e9dd61fc592c9928a765d. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/ESA092500642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3610d26de2ae882d4bdd77d63e70f4be8ace080eee13fb6648156d45ce740e0. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/ES26E2312302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78296f15ca56666b1c578a8f13d80bcfc52c66c29548ae32ad1e8380db3101d1. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/ES26E2312303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa617f9a917f9fdc78060c3b243fc1709901df5fd7463bbf8d4302e3f8d98bb01. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/ES26E2312304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9d3661ab41dff45bbc5d2462f8b76875789866419814373e3cafe502ab1d25. 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/ES26E2312306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53230c5560cc6989f873d9ce907ec2be20fe305905a951855b9ae8fc09f391eb. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ES26E2312308.
Atrapa-la (Banda Sonora Original de la Pel.licula)