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 0x55e7cb10403ffb6b9120310e1fac36017e30922db9607fe124c2e212dcfcb64a. 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/0a6d11a1-a09b-44be-982c-8b2624e7b886.json and https://artists.proofprofile.net/proofs/artist/0a6d11a1-a09b-44be-982c-8b2624e7b886.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Kapitel 1.1 - Ali Baba und die 40 Räuber
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 0xd1a4060ad5aa82d95ed7b3714194ac5cd798dfba7bf0609f236c8dd7564e233c. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEXQ71166398 — a six-check JSON result.
Kapitel 1.2 - Ali Baba und die 40 Räuber
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778b4195dbf909f7e0de54ecc09015393e447d0a8498adfedbd06da06ebc0d5b. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEXQ71166399 — a six-check JSON result.
Kapitel 2.3 & Kapitel 3.1 - Ali Baba und die 40 Räuber
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0afebb547109a5582781640789ac42b045b37df848ecb3048beee4d70e6d2364. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEXQ71166403 — a six-check JSON result.
Kapitel 3.2 - Ali Baba und die 40 Räuber
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc9202d1c56ded70a709442dc2b593606593f5ca059f5eceb49ec58c0f342ce. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEXQ71166404 — a six-check JSON result.
Kapitel 3.4 & Kapitel 4.1 - Ali Baba und die 40 Räuber
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb65ff841bb5405844581cb005fd509372b2a1c52d27b3d5f3bff1f595bda7a0. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEXQ71166406 — a six-check JSON result.
Kapitel 4.2 - Ali Baba und die 40 Räuber
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80aaac4544e9b020bac8a404ec9a6caeb49a9c9d3d08965d08d230e4ea166c0e. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEXQ71166407 — a six-check JSON result.
Kapitel 4.3 & Kapitel 5.1 - Ali Baba und die 40 Räuber
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e10d9e948cfe20a73ddb4a3d99325cee1cf47504a51c6cbdb45b0f2dd1631aa. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEXQ71166408 — a six-check JSON result.
Kapitel 5.4 & Kapitel 6.1 - Ali Baba und die 40 Räuber
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e80f0d1d83f0a11f8ba9cbfa1a0a82df9e68eaec1bf0c9c1a73f90cf2caaf7. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEXQ71166411 — a six-check JSON result.
Kapitel 6.2 - Ali Baba und die 40 Räuber
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3bd6be0778fc18cce109295b129eb5474bf7fa27be883cd280735c5b8636bf. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEXQ71166412 — a six-check JSON result.
Kapitel 6.3 & Kapitel 7.1 - Ali Baba und die 40 Räuber
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0b1a91adb728507b7c8aaf7cc8a5797d8998458a5768c343a740a72bea3b5a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEXQ71166413 — a six-check JSON result.
Kapitel 7.2 - Ali Baba und die 40 Räuber
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f9f65b839eea8aa84b5d93063f813ea2056a2499643e50c66a6e520f25249f. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEXQ71166414 — a six-check JSON result.
Kapitel 8.3 - Ali Baba und die 40 Räuber
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3bf512f57dd1fc9a35dd5143f4f76293b44eb0cb856ba74f5ad7905e26efeb. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEXQ71166417 — a six-check JSON result.
Kapitel 9.2 - Ali Baba und die 40 Räuber
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0befd0926e047fcc0fec0ac874dfe749b672411e54faee7362929b32aa54e35. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEXQ71166419 — a six-check JSON result.
Kapitel 9.3 - Ali Baba und die 40 Räuber
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a707db649829c853602e110f96ddc71995a1f7618a1132bbac86b3cc20b257b. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEXQ71166420 — a six-check JSON result.
Kapitel 10.2 - Ali Baba und die 40 Räuber
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7c88e3e37a710aa158218b31cff7a2ed192d0d7bf4475865a9095567b09408. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEXQ71166422 — a six-check JSON result.
Die Geschichte des Kaufmanns und der Diebe
Die Geschichte Schaddads und der Stadt Irem, der pfeilerreichen (1001 Nacht)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12d4902dccc3c2e8a1b9d94feb0773899403baaabd48042c7894b6e02ad00df. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWM32211024 — a six-check JSON result.
Kapitel 1.2 & Kapitel 2 & Kapitel 3.1 - Märchen aus 1001 Nacht
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f430d68e3c03efe17ed8b7238c06b2174b1630d8b3a52c039e70a4b99ce9d38. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWM32211025 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ca5b31b6e8ac290668d309bac507d781f9eb2d61fce25e80121d298f7d09aa. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWM32211026 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b0aa54a31354a301caf4b0b7e8c61320f5c59bd11633c1cbaea6f790d4bcce. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWM32211027 — a six-check JSON result.
Kapitel 3.4 & Kapitel 4.1 - Märchen aus 1001 Nacht
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e38247a408e1553002632765f4323045f56adf09343f582beaa302cc50c30fb. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWM32211028 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd27d3822e939abcf746e2e0046ba47da6184440ecac0b844560eac9604a3f1. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWM32211029 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaacfb50532faacb0a9f6643c7cab51603162f885ec70bafc443073dc0f10061e. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWM32211030 — a six-check JSON result.
Kapitel 4.4 & Kapitel 5.1 - Märchen aus 1001 Nacht
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a1b7ebba0ed84ea7031f88ed329f788fee2d612098aa9d39160f17e40110d0. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWM32211031 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e62e5d24a8af74c594d8e6849ddb03fa5058730e4774ca2dcc19676ff146dee. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWM32211032 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3487e8b01f692fa60097187c440dea71dbe5dc18e68ecdc9b32f7b4b5b7f927f. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWM32211033 — a six-check JSON result.
Kapitel 5.4 & Kapitel 6.1 - Märchen aus 1001 Nacht
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412098ae37d3730fb6ee45b9ea5738b0f6711453d44c26412359f5fefc05bb53. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWM32211034 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7333d9a85440cd3bb3014a97f593a5966eebb5d73fdaf479f2612536f6424a1e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWM32211035 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef560e8be42d4167a70bdc1df20475987b79b4042c65f2679c695e993440be57. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWM32211036 — a six-check JSON result.
Kapitel 6.4 & Kapitel 7.1 - Märchen aus 1001 Nacht
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac37e864735aa2fa584f9939f87f98be341a13e1471152d994b5f2940b2b9d4. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWM32211037 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28731fcfe2bdab7b2c7085c97c7ef2b81c226166d1fc1996b10a79e63b3b10e. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWM32211038 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4357bc56f092802025654b335da4fef0ff48bcbd8964fb9d80ebc074480b1996. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWM32211039 — a six-check JSON result.
Kapitel 7.4 & Kapitel 8.1 - Märchen aus 1001 Nacht
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4d91e274ac76fb1b24ea51e7510cdd29c9b714fb31ef7524dfeda327b9366f. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-21T22:56:27Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWM32211040 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003df31bb6123d91ad9b14e0b3f80611eb6bbfbeea01a3dd18fed1a752daf422. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWM32211041 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1c3c4903409907cf54327bd187486de70d6089926a636036566be039c9b7c7. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWM32211042 — a six-check JSON result.