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 0xe036c29731621b54f80189e5d1c0098a63c249e79dd8572498b5fa6b8ae07ac6. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fcea9a87-4793-4b5e-942c-a8d7ace1acfd.json and https://artists.proofprofile.net/proofs/artist/fcea9a87-4793-4b5e-942c-a8d7ace1acfd.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 0x75f942e3029153e982b86d75a19bd6b2a7379862f26e148fb3ac14d968295568. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/TWCC32101158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227832069d0117ea157c06848eac91fd71f8e29194045fbf247c33a92a87782d. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/TWCC32101159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed37657cb7c0ca2e91936d9881a10ad5586bb921664115d837fd93a9a812699d. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-17T04:48:02Z), 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/TWCC32101160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd78d6f6934cbaa5e73b7795b1b9de0d67dd12addc55d2fe947d8de165b3d0e1. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TWCC32101161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1953d0010e25158ebd327116ae7ea5288385b0d88f3be4fcf77518cb96791ac7. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:44:01Z), 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/TWCC32101162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15fb0f28d2310d4db0bddc3ccdb0d8d2bd699e9751be0409a95470f65fd31c39. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TWCC32101163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ad95ec87ff48ef0e56a0656acbf2c871a233acc70cb7bb613233cd374bc5cb. 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/TWCC32200803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770b6644a4e51603adaac638ac695fa4f894f235a48177e0eca193cbc6583792. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/TWCC32200804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf2ee4b0aec30f5c16cdda4a474d5ebe034aafe95d97648d19353e0a4c2b4aae. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TWCC32200805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67fa4ee87c7634eb24d83671ebe583b795061699a14ccd4fc34545ba434bd8a0. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TWCC32200806.
好舒服寶寶的天堂與地獄 - Offenbach-Orpheus in The Underworld
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137933debe9fa22f2c68793024a700117b6234c0e2bc2e0736348e489695e88a. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TWCC32200811.
好舒服寶寶的第二十一號鋼琴協奏曲 - Mozart-Piano Concerto No.21 in C Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ecab2d53d014a96be15ad60a633b43c33561e26324f358fe0d45490ce5fdfef. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TWCC32200812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3300c37013ca2fb37dc84b046c0785e2b857b3000be7507782217ee795af4c50. 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/TWA532400170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d99d844ffd0e773e16436891782ba03268ee7a231d6833174775e002679bcb1. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:33:53Z), 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/TWA532400171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd0f396e6b07081119c9aef6ac3848f00b20acb63a0aca8d7ea47e2f2879b24. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:48:42Z), 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/TWA532400172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f912281daa1e120c30474c168ac33a88edc315f77921bd727a227f4bbcf847e. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:54:34Z), 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/TWA532400174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ad5ece3c5dc1c502f0a8f5f8dcd162d8d3f86418217778dd29ea4df7f45cc7. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TWA532400328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110067bc24095210c1b770c7a148816fa467288278f8c7223ad1537142002f90. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:07:50Z), 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/TWA532400329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8df12eefe06882a7d1416e9b3750a5092514d80a635338f973d259c1a6876f. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T22:59:40Z), 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/TWA532400330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51630c223df7e04a2b8842a83fde7ded9b1ad2e5065e03276c5f721878c9525. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/TWA532400331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa29b70b77f6b3f68db98ada6ca89728e904d800131f858e66ae6297ce22265. 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/TWA532400332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfddf3ed25b0832e702887e34d70c3bfd8391bc2dc29eb076d29372e58bc4e9ef. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:15:06Z), 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/TWA532400333.