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 0xe2d405ce81ec00c9f9ed60c96e6f7842d110e5cedf3e7f18b17ba6934f2235e6. Chain 2 (Bitcoin): anchored in block 953733 (2026-06-15T03:12:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/96585b40-da19-4762-9083-659f55ce0117.json and https://artists.proofprofile.net/proofs/artist/96585b40-da19-4762-9083-659f55ce0117.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 0x729801d615e3c14960f374194beba4b6f5342072bd56016a722275f789320932. 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/TCAEJ1955215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5e858d75bd980ad7716fcb316ad6515339f0a9a239b2f7df9321c0e578e227. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/ITFHF2400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b6040d7fac6fde6a63179c79d5ce14069217ed7ca0af52b30501441c5ef8a3. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/ITFHF2400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8490c64858353ef3d573d7c0c069ba63a73c37d4b66ce7f7083bba22b1fc03cd. 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/ITFHF2400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b403bf381b224ef6aa48b5062b5a372e8e687f5654090c77452ae4fcc85cdb. 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/ITFHF2400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe18f733727232973cbde653fc40e43bdb4643a17b29408ab631a4b233982e8. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/ITFHF2400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8c625afab12fed9c72ac74c6f907e83eefcc98dc8f90a074b36a61dedf5ba8. 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/ITFHF2400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dcc995886250f27fc2863817ef97b76e40ff594765875c64ca39ff2d83b1933. 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/ITFHF2400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9b249cc55873ee88cdc7ce272f42b155f4e5714d4f4b59ad6549fbb6d9009b. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/TCAIY2445642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7d6318999e484ccea88b4fe83b958900014683c91982e855d3463ed4b3e23b. 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/IT7LD2401197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf0096e10eb20711c7db4ac1e8df81cda1299fe71688237e856c6f0bb562132. 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/ITTL52420151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c642ec82d2ca9c2823182d2aefce7f07f9462632971ffd3f3bb3e1deac8e823. 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/ITL600800140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b667e92e932c8779b698ae3e03991786ea8b165295ae45ba6f6bd34ba2d2dc. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/QZHNA2000875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45bbadb3da3b6012c2fec58cad4ed7eeead2426a8c2a97ade7a3eb77ca905b6f. 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/QZHNA2000880.
Te sei mai fatto? (feat. Zinghero, Balo1, Chapo) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d97aaa797b84158a4b30394eca32438f8d31d1683ec47078c30fc944ed7cd7. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/TCACZ1715703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279c2b2afae2609588c06d899cd77d0635f8de96fdbcab27c6c9ef0406aa4676. 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/QZHNA2089879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc159475ff81d5fa8431799101f1d4da624c3057694667a565bf5c8809f56b39d. 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/QZHNA2089881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5144b46e4faa146eebe86b863fa3b2e2cd6282fe82916193c1659c7dab25f65. 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/QZHNA2089886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08910371eeb79ea903549bd9269f7816428f3f1c9dff3d8b1706e060e56c1d9. 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/QZHNA2089890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1216753772dc1262f1edd67fe6300d137dda62f4cb0d14c3853098c1de04edf9. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/QZHNA2089896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce747dacbcb5a35059ec05593971f4103ac3d5415a10d7eba9ce1d4163411c7. 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/IT1O72400966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8755d8e2bbb4afbfb94e499ef3bc0160b44ca0b953cddfb947b93ff8847498b. 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/IT1O72400967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b11651665b79253b2dc14cf011add2bd4c58fa11032130da12d6acc806d5ec. 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/IT1O72400968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26bc2d3fe303a774a1de2504a7c5275f0e48394f2a4311e3ac9b8573ffd88f4. 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/IT1O72400969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b4dcaa4c7bda04c7f0112953400547dad12bb6619ca249c3d912c8a35855a6. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/IT1O72400971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28296a715c75528d2acc4138199586a082972066f4c4c5d8e9eeba905046c4e4. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/IT1O72400972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97922cd1e4987c735e7abb8c94a651e00993e490ed56bc22416b68d3abbe0f7. 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/IT1O72400973.