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 0x5d4235cc21bd2fa1bde1fe8d9927ed74813d47feeab74e687fd840733113a631. 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/6c2f3f87-af9d-4cd8-a49d-eb60a61f3bdf.json and https://artists.proofprofile.net/proofs/artist/6c2f3f87-af9d-4cd8-a49d-eb60a61f3bdf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
In the Twilight, These Rocks Have Teeth (A Compilation of Contemporary Post Rock and Metal)
In the Twilight... (Pelagic Records Compilation, Pt. 1: Contemporary Postrock)
...These Rocks Have Teeth (Pelagic Records Compilation, Pt. 2: Contemporary Metal)
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 0x914770f3b368f46bb7cdfdb13db23b3409c2d69148af12e92ce82942c38b3deb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBCQV2200293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb643ff4b4c9999ba787027c4a1ba97e5856dc41e045af9da51c47a549fc46ce3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBCQV2200294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e4b0f198e7a7822f98ca274cc01b08b6a9ba1a4a0fe37d525b33412ee202f2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBCQV2200296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9658c5a12f1a87e4122c566926537b749d7cf5eb8e14556e014ba8ec95d63518. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBCQV2200298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172d79bf911191c65afb096be9b5702a5a65c49c397166475c3f85bbdf9ab01a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBCQV2200300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1456b08b9cbd294cc0d9f70a95d21a2f911dccd88bb38417c4d828e55ee5fbd9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBCQV2200302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754108facc28df0b53f0dcc3fe10a2bc19530eef7c6be8e224b3591a4700fc6a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBCQV2200303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6272e38679ec8cc63ab5ff20f22866a09020fcbd2637b01db2c0d98a5dc6d871. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBCQV2200304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca3c9c4e5736c1b6b4f83c065e8e652ada351443864e3b3ccf721a79050f07b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBCQV2100076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f4e49d2395b52768ffe13dee41c20431070aef3019164d2f6d55faa0151427. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBCQV1900194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea60118d1872629c1f5b371223c6ea9f76203f2ec0941ada51f7cdb60615fa99. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBCQV1900196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a16ef186487bbb1fd780296b08215e12579e3d6599b09fc060bf1cc09803aaf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBCQV1900193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97466708f6ba2ab6bce9e9d39fb48a07ef9181dcae83479841aad0e76cc2ee01. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBCQV1900201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d5cade214741cc361be239ae6975f3b2d861a3e478041a6af4ede833daaaee. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBCQV1900197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6b69855c4b9819709c550f87cfba2a4a7e107f0659c11401d17dab1ef96c79. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBCQV1900199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb8883d01ef5f6962fc9ff64cd313a252f671a8528286ee8762db1cbe6f7aa7. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/DEZ651702017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74db0d9b674ec2eccbf258e183f38406d3136c9892706d3c42a98117f8d497c7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEKE51500208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b5963ebc87967618c079a4a73454524acf9bf5b08857c14cb9f19bd8850f7f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEKE51500209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2fb6de22d593c9fc5a9e4e2b2b0c8caa2c42dccb213fcae8d33a7c24f6ea26c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEKE51500210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6d26d1425e222889f23a45aca0b9382f63a0a79092e9ddcc4c7a5b1c7ce0d1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEKE51500211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce35bedefcc5a63d5a843f79b4791d8e8bf213fb532762de1ad3750c55f945de. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEKE51500212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bcfb3a8506c22f174bb6274d4eefd8d6ee5b801ebd55a8df4d353782beb1651. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEKE51500213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd743eaf58dfbc1c72919539760ee79364bc246bb3e20bc71a89556bd265dfc7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEKE51500214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00df96ae73a44d2b5608b4c9e65d06907bf380ac8a87c9ea43b4efafa5effb30. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEKE51500215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ec5b9adb85e126c6def104a50fef6f0242522ab6577ef0daace3673a6b42f5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEKE51500216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00f35626c2deeb1478086d839c15c7d3ff62bc4f01f20724c0bc9289b0e7b36. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM4TW1722570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30bd549b1b7b4695edd9cfb4860e8a55f571ddc12350f0a8a5a8cf2118c305b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM4TW1722571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de567d835f304e352bb8d68b37f2bbae659916120a4bace6dbcd0a8a0c3cdf1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM4TW1722572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27046af36854ef47c9e8bcf38c753aff42d594fb16e8f3eae9e542125be9fc1c. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:15:46Z), 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/QM4TW1722573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f32055bd94901450c6ba3318391862f98f40f6a56b24a7647fb6eeb2ecd0a9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:21:22Z), 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/QM4TW1722574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06dd236ab5684e471912c3294dbbdc396c78475a772aaea9f411aa194b105c43. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMBZ91694877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0963918dc2fb2ec1861f1320b894c337c75b0fca5f1e2b695d94b12ca20bf312. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMBZ91694878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f3412b82abf658b684ca5107d4adc2faf813f6b7695fc6c174c3a39548abb5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMBZ91694879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeedda5c1ced1754e8c46388a458d672f79ce8ecc2c8d048b93a0bc1fb52c4fe. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMBZ91694885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd23f04b3d1c5c67e2cc90e54b00b831ddbaa6cb11417112bab59ddc18a22a71. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM6N22437540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8b10345d904fc1ab39f22c774cc7579ad5318019a6ae71733d79221c79e10d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBCQV2200569.
Canzoni Scritte Durante La Guerra II (La Tregua)