PTM may refer to: Science and technology Polynomial texture mapping, a digital imaging technique Post-translational modification, covalent and generally enzymatic modification of proteins following
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 0x44684236308a5add79190c73ce2e545feabcb95ac4c4e136b9d2612c1452ef2f. 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/a55dd894-6e9b-4c58-9d39-d4a99a749623.json and https://artists.proofprofile.net/proofs/artist/a55dd894-6e9b-4c58-9d39-d4a99a749623.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 0x816a07130623f0f74deba777322549a848a9c801eea090ed0caa35b0bc7653de. 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/NL1AP1934086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd849c8fb3777d22840da4940906c6d4bf123807c6f6b85fbaba46e8a8847d128. 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/NL1AP1934091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f008336503798bf6efe5ffa002bd547e2057d1550ae31320a046abae1c3e8a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEPI82011449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e817428b7a230f3bcc67c6e9df976a79ff3bda3474f4005fba65e62f8e2a9ef. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DEPI82012738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1efd97160da529489832d6509ec1909a5e04b58ad84f6e282c8e6021cb071415. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/DEPI82013192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be6c073fbf58c6bd0d648f5d6a5a82fd9f219d6173dd68c820e251cfef4e5eb. 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/DEZC62102867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0013514c62f0903b64ca3445c34e573c4095107cea3113689431718fdb43673. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TCAFS2153402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7bd2441f83af98be17ce32cef821771bbc243f4b9f8ce9615c7ef363cf677bb. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZHN92203210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4717122d7f47088cf41877bb811d6bf34a143e579e852fa160baa7cd33842a92. 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/QZDA52308694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef9ee60af63449f0a05f6fb0e7974ddf45ced4fa307cbdaef4c14645c9ce49d. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZK6J2301431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6673df0779675f52cf0996e828a57abdcd484a8309f4aadf8863b555dfd36b3. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/QZTB62334589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8a5871527f2ebf9a25b8a7d1e3ec03adcd1cb547c86f943d2e7ae0ca156a21. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZFYY2408979.
don't take this or life too serious (sped up)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378e53c6778857d31a42d42de07d9fc0653d0545ffea6f0667a3cc074a01143a. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/QZWFE2361890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fc906cccbece715ee17e9c32b4d8028d11787fc4cb71c11b6d93b8af1790e6. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/QZK6N2492526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31710bfbc52451e64bf9e814a145685c696f32acdedf27ac0999a7baf554172c. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZRP52481427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0d5b5c90b138259ad8372a66197a41e4ca5860e10cfae894ef431d182c8e2f. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QZWFT2453583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e9e9aafd31a4a8962ba27e42a81d115f76705fd2cab51bb8c093d1c5921282. 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/QZHN32584950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98cd0ed10af86a50856e274ab7bf67f254921d7c827c8aa16c757d22d1f16d8a. 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/QZNWZ2565040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ec4ace9ccda60a1561987d505e4186013a8ee0e60dd5710f371395549e27c6. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB42588713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc99cadd25e0865dbe68d52e1afa2bf869563daf273ca9ea36e92a5bbb522caf. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZZ7R2541533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ad40968c6dc9b274f9fb09baa9633f8b09233fff6fc9ad540a83ab5339d314. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3EZ2545018.