Year 1349 (MCCCXLIX) was a common year starting on Thursday of the Julian calendar. Events January–December January 22 – An earthquake affects L'Aquila in southern Italy with a maximum Mercalli inte
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 0xd3508f4c8cb022f957a21ec5be3af1a8badc25312042459aeddef45b7fb02544. 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/96b7b59d-087d-40f5-933f-dc8ffb680184.json and https://artists.proofprofile.net/proofs/artist/96b7b59d-087d-40f5-933f-dc8ffb680184.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 0x04abfb474ce0e6c78c0477695cf9fca617adcb05666c2eb7c9e1d2c80904a2e4. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/GBADD0407701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40008f5aa40d6a702238692542d8fb5ab1f0f0b2576e0fa1e9a0cc1e957974c. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/GBADD0407702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86138230997ec5721fe4cef3970324f81a19655172b212dc364ac46ff834ca22. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GBADD0407703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc3ad62076e740cfbd924f6eaeb633ea15effe7a8e9714d1cdeb943a7b40f38. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/GBADD0407704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874aa1fc2c7d003689c33c9d13e08bedab68da7b1053cea2f033377af7a28739. 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/GBADD0407705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a14160d041a6504e42b5ff03fe25c92ce9a1fa7d44fc2bd3dc0c33a2f59ebb4. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GBADD0407706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7087bb5bb2b4284cc16fab63b67a3e77959c032b9f152959a2109782fa02fac8. 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/GBADD0407707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c5f7bc06b89396042343896875b17249a8c10d226da1aabed28d24998ba5db. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GBADD0407710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695666e1451c703fefeae5c27da28f749aa11a45fdba3674bae99d6b9763791a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBADD0408201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3377b23b6340b21c6ec4724c6d18e708249c864c34c66d0416fbe6bf32e1b148. 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/GBADD0408202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb847d4cb6e494be62116073767b9bb8387c6b297dd31a06dc13500a2beeab47e. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GBADD0408203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea88f6683b6362a8660ba8aa4b3407e2731d12893c2f5993eac2a4bf7f9b1b9e. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/GBADD0408204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1af19beaf7fc4b3c4630dbd4a338e1873638a5254ef4283b0144f30409607eb. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/GBADD0408205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76fda3cf0c7217dccbc9aff38608091986210d4a6ff563859210e78a5badc7a. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/GBADD0408206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8899a6c70ee2487feb27c06128b7d429a211b71036c69e8874faf7e28cdfb1f8. 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/GBADD0408207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a8b7b26d09356f34722e0a3d234c71a0e5401a397bbd2582181cdc0cac4275. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GBADD0511404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea29d292ea91c7be08390d31850ccb18cbba1b352348055f953db2950380a1cf. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/GBADD0511405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89407810dba5443c3b596b40fc3c5e2434f54ec30c1cb8f24d42be7ef35f1a0d. 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/GBADD0511406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5fde8a5f653abfd9a5e57f1522db2207cdc0f0cb9d81f61de809d53f66a88c. Chain 2 (Bitcoin): anchored in block 958487 (2026-07-18T03:43:59Z), 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/GBADD0511407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2780507d46efbd04def7bf61a1a38e8c02bf4272bac477538fc516efc62d1fbd. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/GBADD0511408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b39909c2c6f50a216d318786e16299f2379d170f961019ce05f8480f7d6e26a. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/NOCVC1066040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41d315df2a75a2fc22aa4e5c39554c07bd03e3eaabf993e48d2b4073f70e003. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/NOCVC1066060.
Massive Cauldron of Chaos (Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4330e9252cca211df7f4adcef61f126d58f9792c988cf39a5f5402eae1a56e82. 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/NOCVC1418010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a88c38697d8382dd48a5f7153bb583a04bca7733bef14d93ca879f335ea460. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/NOCVC1418030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af64ff8d160bcec869c6cd5dd42e1b896dc6a69af40afaefdb5b24d3a8acfa7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NOCVC1418070.
Massive Cauldron of Chaos (Digital Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3ef692ba6a50b60bc09e62d25bc8fef62f10aef3eecc978194125839ba8dc8. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/NOY3W1801011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae36b60ef97ebcecccc31b6ba80f6184b5f59ebb5bedf66fb6528c19edc78856. 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/NOY3W1901010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46de94ce3bad2e3012dc75d324c4c303836c90f78efa559f5f74e1364ce7a15d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/NOY3W1901040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b121388c060f20d71622e65a0034e89b0789de6ac38e8c8b106ee92b76a273. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/NOY3W1901050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851ee75618ad65548454a3df677e685f6a1c6e11b779aab42bc53033bde41126. 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/NOY3W1901080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9d9fff3ffc2e9d44e62d1f15917740f98e72258c6509e248c05d54fda33dfd. 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/NOY3W1901090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd62f5f6b6dabd5a05ed27fc7c824f1f3427f89e8f80115ebb2ade2124640c4d. 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/NOY3W1901100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69f74805577833d72a7a7377403065a5b1393198dd8d87dc7b3aaf8847c6344. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/NOY3W1901110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dea6abfc846f8f2bc742474e7c804d396c257c35c279e8f085c28936225ecfc. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/FR33T2480703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586b30aff01cce919699e8f38bfcfa100d6d151fadb7223dc8b054bee1b4f651. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FR33T2480705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab5389597c8dd7fcefa6a959b0123240e28e343194785ac11220e70ffae859c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR33T2480706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2840844f6dd265c9b70781e6646d4f7e3e0a888e5c3d75645740c00e3763b96. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/FR33T2480707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ac8bc99604044d931ffbe8ea822a45d716f52f205b9d6be06b4cb03a03c61d. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/FR33T2480708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1b7d013af444e9f4305ee4c1fb5999657612d07b1ccf7ccb0b0ae9cd82ae18. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/FR33T2587409.