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 0x26ad677093ed8c5f16c8dd3cc3b7131b6e3d7425d4a8bbe4e481ae1fc319624e. 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/75479f00-6bf0-4529-a06d-2356736ec2a3.json and https://artists.proofprofile.net/proofs/artist/75479f00-6bf0-4529-a06d-2356736ec2a3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Christmas Carols - The Collection - (The Best of The Oxford Trinity Choir)
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 0x860196f787c8af889cebf70056b8b8e9e098404567200f676b041079bdded1c9. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:46:31Z), 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/QMDA71398795.
Christmas Carols - The Very Best Traditional Xmas Carols & Hymns
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36cc96236127579c34375f06227d1dd9c1f43887209ec5d68d3de679ff28f50. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QMDA71398778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f15ed08f332b1c0f5f743f2b7d9773985ad09a385f53ba6270a00ac2e0e6b6. 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/QMDA71398779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0545c5c802f9a1e93c507900b92ad025406640d7661a985c472fcb76d5ff1ab2. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QMDA71398781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9ed225aad81a39d0537a51d61c837d583f24e1319e8beaef93bc169e592c7e. 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/QMDA71398782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a15ddbaef49dfedf564d2674fc473204c5232798f2c196064a92f584277cd9. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QMDA71398783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84392f38f0ae6ba888fbbe8add36b71a4f641be0dd335c57e8bc1e436be62c5. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QMDA71398784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d56db98c5eb47e9226bb63613d5da85c991e89e8113e9e1736cb103fcee8546. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QMDA71398786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf902b21b0e15c52d7769c2e03714cad6da0217e8f3383efac3c67c4361516290. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:43:19Z), 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/QMDA71398787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2adab749de749f33fcd7a0902661ff76cddd6d8775a979f8460f56f4eaef7572. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QMDA71398789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f95e69177ada3289e0f3c659b9f9e748905b0d8da96ab7fc70bba00130eae4. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:02:00Z), 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/QMDA71398790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66306d21b717717ac45199eaa270e94180c731bc5a9b9619bfa6083d8dbdacb1. 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/QMDA71398792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345f14c9d0dac8567db38bb22b776ff4bc2b71e37780740f3928be60509c740d. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:20:41Z), 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/QMDA71398793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338f10f04558e63e9b2f9ac9567364aa52175b8c7347537a41e8e183148dfa65. 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/QMDA71398794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa794d1649e20b2d6b09c2ae45ba87ceda6db8e572d6cf5f95ce221ca42209d67. 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/QMDA71398796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01cb237136ef25e4ba140f9575c128b411969221dc763213335f244245b5ebc7. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/QMDA71398800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52864f6b1efc7fc1781da01931b168d133d08caffd253df11a08fa87d6f3970c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QMDA71398802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57389b0c8bd58c98b4b44de94fd35353c68353e3fdf3f61ac2b5451a15418da. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:49:09Z), 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/QMDA71398805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a123ab27df84cf4c5da3bbb9f8db1f08e19c6e382c2b826bd02eb21bc299ea. 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/QMDA71398806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37e098b08d0ddab67923a6160bac6b95d667ae9b5bfac9f168d07c404da7346. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QMDA71398808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3232f2d36e7867ae0066a29896be890c960e57b2a5d767f533765123ec4d7ec5. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QMDA71398816.
100 Christmas Carols & Festive Xmas Hymns - the Very Best Traditional Carols & Holiday Songs Collection
Christmas Carols - Traditional Christmas Songs, Hymns & Xmas Carols
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975def791bdb66d0a5e4cd2aec5772653e311dac04528890e8a2614459ba752c. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/GBTFS0701399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5d09c27045530141c9470ac0a574e506d5c6becd083654acf2c473f2cb3377. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:37:18Z), 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/GBTFS0701400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6087f929049583a10dd4efb3a6694c16bc6eaef1962437add3a8eeec71179bb4. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:49:17Z), 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/GBTFS0701415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1974bd8d685b37f98dcbbf8c7cc4ee3725b546c6a029a1c4d5defc456254c2cf. 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/GBTFS0701412.
Christmas Hymns - The Very Best - A Collection of Traditional Christmas Songs (Deluxe Hymns Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5d09c27045530141c9470ac0a574e506d5c6becd083654acf2c473f2cb3377. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/GBTFS0701400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975def791bdb66d0a5e4cd2aec5772653e311dac04528890e8a2614459ba752c. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:36:42Z), 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/GBTFS0701399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7276f6aaad624c74b003c762ea4c4c3c92f92ce3020f9cbaf25f874c22fb10. 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/GBTFS0701433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bad2eb27eb782f0f767199f2946287a7e74ec66b95641be626d831c93fd09a3. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:27:03Z), 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/GBTFS0701426.